MAX8819AETI+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX8819AETI+ ,PMIC with Integrated Charger and Smart Power Selector™ in a 4mm x 4mm TQFNApplicationsDLIM1DLIM2MP3 PlayersBATPortable GPS Devices+Li+/Li-PolyENABLE SYSTEM EN123BATTERYLow-P ..
MAX881R ,Low-Noise Bias Supply in µMAX with Power OK for GaAsFET PAApplications Ordering InformationCell Phones Wireless ModemsPART TEMP RANGE PIN-PACKAGEPCS Phones T ..
MAX881REUB ,Low-Noise Bias Supply in MAX with Power-OK for GaAsFET PAfeatures include a power-OK (POK) output that sig-nals when the negative voltage is within 7.5% of ..
MAX881REUB+ ,Low-Noise Bias Supply in µMAX with Power OK for GaAsFET PAApplications Ordering InformationCell Phones Wireless ModemsPART TEMP RANGE PIN-PACKAGEPCS Phones T ..
MAX881REUB-T ,Low-Noise Bias Supply in µMAX with Power OK for GaAsFET PAfeatures include a power-OK (POK) output that sig-nals when the negative voltage is within 7.5% of ..
MAX882 ,5V/3.3V or Adjustable, Low-Dropout, Low-IApplicationsOrdering Information continued at end of data sheet.*Dice are tested at T = +25°C, DC p ..
MB86391 ,MPEG2 1chip Audio/Video EncoderMPEG2 1chip Audio/Video Encoder MB86391 Product Specification Revision 1.1 12, November 2001 Copy ..
MB86434 ,5V Single Power Supply Audio Interface Unit (AIU)FUJITSU SEMICONDUCTORDS04-23003-1EDATA SHEETASSPCMOS5V Single Power Supply Audio Interface Unit (AI ..
MB86437PFV ,3 V Single Power Supply Audio Interface Unit (AIU)FUJITSU SEMICONDUCTORDS04-23005-3EDATA SHEETASSPCMOS3 V Single Power Supply Audio Interface Unit (A ..
MB86604L ,SCSI-II Protocol Controller (with single-ended driver/receiver)FUJITSU SEMICONDUCTORDS04-22415-1EDATA SHEETASSP Communication ControlCMOSSCSI-II Protocol Contr ..
MB86604LPFV ,SCSI-II Protocol Controller (with single-ended driver/receiver)FUJITSU SEMICONDUCTORDS04-22415-1EDATA SHEETASSP Communication ControlCMOSSCSI-II Protocol Contr ..
MB86606A ,FAST-20 SCSI Protocol ControllerFEATURESSCSI Protocol Controller Block:• Operable as initiator and target• WIDE and FAST-20 data tr ..

MAX8819AETI+
PMIC with Integrated Charger and Smart Power Selector™ in a 4mm x 4mm TQFN
General Description
The MAX8819_ is a complete power solution for MP3
players and other handheld applications. The IC
includes a battery charger, step-down converters, and
WLED power. It features an input current-limit switch to
power the IC from an AC-to-DC adapter or USB port, a
1-cell lithium ion (Li+) or lithium polymer (Li-Poly) charg-
er, three step-down converters, and a step-up converter
with serial step dimming for powering two to six white
LEDs. All power switches for charging and switching the
system load between battery and external power are
included on-chip. No external MOSFETs are required.
The MAX8819C offers a sequenced power-up/power-
down of OUT1, OUT2, and then OUT3.
Maxim’s Smart Power Selector™ makes the best use of
AC-to-DC adapter power or limited USB power. Battery
charge current and input current limit are independent-
ly set. Input power not used by the system charges the
battery. Charge current is resistor programmable and
the input current limit can be selected as 100mA,
500mA, or 1A. Automatic input selection switches the
system load from battery to external power. In addition,
on-chip thermal limiting reduces the battery charge rate
to prevent charger overheating.
Applications
MP3 Players
Portable GPS Devices
Low-Power Handheld Products
Cellular Telephones
Digital Cameras
Handheld Instrumentation
PDAs
FeaturesSmart Power SelectorOperates with No Battery PresentUSB/AC Adapter One-Cell Li+ ChargerThree 2MHz Step-Down Converters
95% Peak Efficiency
100% Duty Cycle
±3% Output Accuracy over Load/Line/
Temperature2 to 6 Series WLED Driver with Dimming ControlActive-Low REG1 Reset OutputShort-Circuit/Thermal-Overload/Input
Undervoltage/Overvoltage ProtectionPower-Up/Down Sequencing (MAX8819C)Total Solution Size: Less Than 90mm2
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
19-4166; Rev 1; 4/09
EVALUATION KIT
AVAILABLE
Smart Power Selector is a trademark of Maxim Integrated
Products, Inc.
USB/AC-TO-DC
ADAPTER
ENABLE SYSTEM
ENABLE CHARGER
ENABLE BACKLIGHT
SYS
DLIM1
DLIM2
EN123
CEN
EN4
LX4
OVP4
FB4
LX3
LX2
CISET
BAT
SYS
Li+/Li-Poly
BATTERY
OUT1
I/O
OUT2
MEMORY
OUT3
CORE
CHGCHG
LX1
RST1RST1
MAX8819_
Typical Operating Circuit
Ordering Information
+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
PARTTEMP RANGEPIN-
PACKAGE
SYS
VOLTAGE
(V)
MAX8819AETI+-40°C to +85°C28 TQFN-EP*4.35
MAX8819BETI+-40°C to +85°C28 TQFN-EP*5.3
MAX8819CETI+-40°C to +85°C28 TQFN-EP*4.35
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
ELECTRICAL CHARACTERISTICS
(DC, LX_ unconnected; VEP= VGND= 0V, VBAT= 4V, DLIM[1:2] = 00, EN123 = EN4 = low, VFB1= VFB2= VFB3= 1.1V, VFB4= 0.6V,
PV13 = PV2 = SYS, TA= -40°C to +85°C, capacitors as shown in Figure 1, RCISET= 3kΩ, unless otherwise noted.) (Note 3)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
DC POWER INPUT
DC Voltage RangeVDC4.15.5V
MAX8819A/MAX8819C4.34.354.4SYS Regulation VoltageVSYS_REGVDC = 5.75VMAX8819B5.15.35.5V
DC Undervoltage ThresholdVUVLO_DCVDC rising, 500mV typical hysteresis3.954.004.05V
DC Overvoltage ThresholdVOVLO_DCVDC rising, 300mV typical hysteresis5.8115.96.000V
DLIM[1:2] = 109095100
DLIM[1:2] = 01450475500DC Current Limit
(Note 4)IDCLIM
VDC = 5.75V, VSYS = 5V
for MAX8819B or VSYS =
4V for MAX8819A/
MAX8819CDLIM[1:2] = 0090010001100
DLIM[1:2] = 11 (suspend)0.020.035
DLIM[1:2] ≠ 11, ISYS = 0mA, IBAT = 0mA,
EN123 = low, EN4 = low, CEN = high,
VDC = 5.5V
1.33DC Quiescent CurrentIDCIQ
DLIM[1:2] ≠ 11, ISYS = 0mA, EN123 = low,
EN4 = low, CEN = low, VDC = 5.5V0.95
DC-to-SYS Dropout ResistanceRDSVDC = 4V, ISYS = 400mA, DLIM[1:2] = 010.3300.700Ω
DC-to-SYS Soft-Start TimetSS-D-S1.5ms
DC Thermal-Limit TemperatureDie temperature where current limit is
reduced100°C
DC Thermal-Limit GainAmount of input current reduction above
thermal-limit temperature5%/°C
SYSTEM
System Operating Voltage RangeVSYS2.65.5V
ABSOLUTE MAXIMUM RATINGS
DC, SYS, BAT, CISET, DLIM1, DLIM2, EN123
CEN, EN4, CHG, RST1, FB1, FB2, FB3 to GND....-0.3V to +6V
PV2 to GND...............................................-0.3V to (VSYS+ 0.3V)
PV13 to SYS...........................................................-0.3V to +0.3V
PG1, PG2, PG3, PG4 to GND................................-0.3V to +0.3V
COMP4, FB4 to GND................................-0.3V to (VSYS+ 0.3V)
LX4 to PG4.............................................................-0.3V to +33V
OVP4 to GND.........................................................-0.3V to +33V
LX1, LX2, LX3 Continuous Current (Note 1).........................1.5A
LX4 Current................................................................750mARMS
Output Short-Circuit Duration.....................................Continuous
Continuous Power Dissipation (TA= +70°C)
28-Pin Thin QFN Single-Layer Board (derate 20.8mW/°C
above +70°C)...........................................................1666.7mW
28-Pin Thin QFN Multilayer Board (derate 28.6mW/°C
above +70°C)...........................................................2285.7mW
Junction-to-Case Thermal Resistance (θJC) (Note 2)
28-Lead Thin QFN...........................................................3°C/W
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature........................................-40°C to +125°C
Storage Temperature.........................................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Note 1:LX1, LX2, LX3 have clamp diodes to their respective PG_ and PV_. Applications that forward bias these diodes must take
care not to exceed the package power dissipation limits.
Note 2:Package thermal resistances were obtained using the method described in JEDEC specification JESD51-7, using a four-layer
board. For detailed information on package thermal considerations, refer to http:///thermal-tutorial.
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
System Undervoltage Lockout
ThresholdVUVLO_SYSVSYS falling, 100mV hysteresis2.452.52.55V
BAT-to-SYS Reverse Regulation
VoltageVBSREG
DC and BAT are delivering current to SYS;
IBAT = 95mA; VDC = 4.3V,
MAX8819A/MAX8819C (only)6690mV
VDC = 0V, EN123 = low, EN4 = low,
VBAT = 4V1020
VDC = 5V, DLIM[1:2] ≠ 11, EN123 = low,
EN4 = low, VBAT = 4V010
VDC = 0V, EN123 = high, EN4 = low,
VBAT = 4V (step-down converters are not in
dropout)
Quiescent Current
ISYS +
IPV13 +
IPV2
VDC = 0V, EN123 = high, EN4 = high,
VBAT = 4V (step-down converters are not in
dropout)
BATTERY CHARGER (VDC = 5.0V)
BAT-to-SYS On-ResistanceRBSVDC = 0V, VBAT = 4.2V, ISYS = 0.9A0.0730.165Ω
TA = +25°C4.1744.2004.221BAT Regulation Voltage
(Figure 2)VBATREGTA = -40°C to +85°C4.1584.2004.242V
BAT Recharge Threshold(Note 4)-135-100-65mV
BAT Prequalification ThresholdVBATPRQVBAT rising, 180mV hysteresis, Figure 22.93.03.1V
RCISET Resistance RangeGuaranteed by BAT fast-charge current
limit315kΩ
CISET VoltageVCISETRCISET = 7.5kΩ, IBAT = 267mA0.91.01.1V
DLIM[1:2] = 10, RCISET = 3kΩ8792100
DLIM[1:2] = 01, RCISET = 3kΩ450472500
DLIM[1:2] = 00, RCISET = 15kΩ170200230
DLIM[1:2] = 00, RCISET = 7.5kΩ375400425
BAT Fast-Charge Current LimitICHGMAX
DLIM[1:2] = 00, RCISET = 3.74kΩ740802860
BAT Prequalification CurrentIPREQUALVBAT = 2.5V, RCISET = 3.74kΩ6082105mA
Top-Off Threshold (Note 5)ITOPOFFTA = +25°C, RCISET = 3.74kΩ6082105mA
VDC = 0V, EN123 = low, EN4 = low,
CEN = low, VBAT = 4V1020
BAT Leakage Current
VDC = 5V, DLIM[1:2] = 11, EN123 = low,
EN4 = low, VBAT = 4V0
ELECTRICAL CHARACTERISTICS (continued)
(DC, LX_ unconnected; VEP= VGND= 0V, VBAT= 4V, DLIM[1:2] = 00, EN123 = EN4 = low, VFB1= VFB2= VFB3= 1.1V, VFB4= 0.6V,
PV13 = PV2 = SYS, TA= -40°C to +85°C, capacitors as shown in Figure 1, RCISET= 3kΩ, unless otherwise noted.) (Note 3)
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
ELECTRICAL CHARACTERISTICS (continued)
(DC, LX_ unconnected; VEP= VGND= 0V, VBAT= 4V, DLIM[1:2] = 00, EN123 = EN4 = low, VFB1= VFB2= VFB3= 1.1V, VFB4= 0.6V,
PV13 = PV2 = SYS, TA= -40°C to +85°C, capacitors as shown in Figure 1, RCISET= 3kΩ, unless otherwise noted.) (Note 3)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Slew rate333mA/ms
Time from 0 to 500mA1.5
Time from 0 to 100mA0.3Charger Soft-Start TimetSS_CHG
Time from 100mA to 500mA1.2
Timer Accuracy+15%
Timer Suspend Threshold
CISET voltage when the fast-charge timer
suspends; 300mV translates to 20% of the
maximum fast-charge current limit
250300350mV
Timer Extend Threshold
CISET voltage when the fast-charge timer
extends; 750mV translates to 50% of the
maximum fast-charge current limit
700750800mV
Prequalification TimetPREQUAL33min
Fast-Charge TimetFSTCHG660min
Top-Off TimetTOPOFF33min
POWER SEQUENCING (Figures 6 and 7)
REG1, REG2, REG3 Soft-Start
Time
tSS1, tSS2,
tSS32.6ms
REG4 Soft-Start TimetSS4CCOMP4 = 0.022μF to GND5ms
REGULATOR THERMAL SHUTDOWN
Thermal Shutdown TemperatureTJ rising+165°C
Thermal Shutdown Hysteresis15°C
REG1–SYNCHRONOUS STEP-DOWN CONVERTER
Input VoltagePV13 supplied from SYSVSYSV
MAX8819A/MAX8819B400
Maximum Output Current
L = 4.7μH,
RLSR = 0.13Ω
(Note 6)MAX8819C550
Short-Circuit CurrentL = 4.7μH, RLSR = 0.13Ω600mA
Short-Circuit Detection Threshold230mV
Short-Circuit Foldback FrequencyfOSC/3Hz
FB1 Voltage(Note 7)0.9971.011.028V
Output Voltage Range1VSYSV
TA = +25°C-50-5+50FB1 Leakage CurrentVFB1 = 1.01VTA = +85°C-10nA
Load RegulationIOUT1 = 100mA to 300mA1%
Line Regulation(Note 9)1%/D
p-Channel On-ResistanceVPV13 = 4.0V, ILX1 = 180mA190mΩ
n-Channel On-ResistanceVPV13 = 4.0V, ILX1 = 180mA250mΩ
MAX8819A/MAX8819B0.5650.6000.640p-Channel Current-Limit
ThresholdMAX8819C0.6150.6500.750A
MAX8819A/MAX8819B/MAX8819C
ELECTRICAL CHARACTERISTICS (continued)
(DC, LX_ unconnected; VEP= VGND= 0V, VBAT= 4V, DLIM[1:2] = 00, EN123 = EN4 = low, VFB1= VFB2= VFB3= 1.1V, VFB4= 0.6V,
PV13 = PV2 = SYS, TA= -40°C to +85°C, capacitors as shown in Figure 1, RCISET= 3kΩ, unless otherwise noted.) (Note 3)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
Skip-Mode Transition Current(Note 8)80mA
n-Channel Zero-Crossing
Threshold10mA
Maximum Duty Cycle100%
Minimum Duty Cycle12.5%
PWM FrequencyfOSC1.82.02.2MHz
Internal Discharge Resistance in
ShutdownEN123 = low, resistance from LX1 to PG11.0kΩ
REG2–SYNCHRONOUS STEP-DOWN CONVERTER
Input VoltagePV2 supplied from SYSVSYSV
MAX8819A/MAX8819B300
Maximum Output Current
L = 4.7μH,
RLSR = 0.13Ω
(Note 6)MAX8819C500
Short-Circuit CurrentL = 4.7μH, RLSR = 0.13Ω600mA
Short-Circuit Detection Threshold230mV
Short-Circuit Foldback FrequencyfOSC/3Hz
FB2 Voltage(Note 7)0.9971.0121.028V
Output Voltage Range1VSYSV
TA = +25°C-50-5+50FB2 Leakage CurrentVFB2 = 1.01VTA = +85°C-50nA
Load RegulationIOUT2 = 100mA to 300mA1%
Line Regulation(Note 9)1%/D
p-Channel On-ResistanceVPV2 = 4.0V, ILX2 = 180mA290mΩ
n-Channel On-ResistanceVPV2 = 4.0V, ILX2 = 180mA200mΩ
MAX8819A/MAX8819B0.5120.5500.595p-Channel Current-Limit
ThresholdMAX8819C0.5650.6000.700A
Skip-Mode Transition Current(Note 8)80mA
n-Channel Zero-Crossing
Threshold10mA
Maximum Duty Cycle100%
Minimum Duty Cycle12.5%
PWM FrequencyfOSC1.82.02.2MHz
Internal Discharge Resistance in
ShutdownEN123 = low, resistance from LX2 to PG21.0kΩ
REG2 DisableΔISYSVPV2 = 0V, REG2 disabled (Note 10)-25μA
REG3–SYNCHRONOUS STEP-DOWN CONVERTER
Input VoltagePV13 supplied from SYSVSYSV
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
ELECTRICAL CHARACTERISTICS (continued)
(DC, LX_ unconnected; VEP= VGND= 0V, VBAT= 4V, DLIM[1:2] = 00, EN123 = EN4 = low, VFB1= VFB2= VFB3= 1.1V, VFB4= 0.6V,
PV13 = PV2 = SYS, TA= -40°C to +85°C, capacitors as shown in Figure 1, RCISET= 3kΩ, unless otherwise noted.) (Note 3)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
MAX8819A/MAX8819B300
Maximum Output Current
L = 4.7μH,
RLSR = 0.13Ω
(Note 6)MAX8819C500
Short-Circuit CurrentL = 4.7μH, RLSR = 0.13Ω600mA
Short-Circuit Detection Threshold230mV
Short-Circuit Foldback FrequencyfOSC/3Hz
FB3 Voltage(Note 7)0.9971.011.028V
Output Voltage Range1VSYSV
TA = +25°C-50-5+50FB3 Leakage CurrentVFB3 = 1.01VTA = +85°C-50nA
Load RegulationIOUT3 = 100mA to 300mA1.3%
Line Regulation(Note 9)1%/D
MAX8819A/MAX8819B0.5120.5500.595p-Channel Current-Limit
ThresholdMAX8819C0.5650.6000.700A
Skip-Mode Transition Current(Note 8)80mA
n-Channel Zero-Crossing
Threshold10mA
p-Channel On-ResistanceVPV13 = 4.0V, ILX3 = 180mA290mΩ
n-Channel On-ResistanceVPV13 = 4.0V, ILX3 = 180mA120mΩ
Maximum Duty Cycle100%
Minimum Duty Cycle12.5%
PWM FrequencyfOSC1.82.02.2MHz
Internal Discharge Resistance in
ShutdownEN123 = low, resistance from LX3 to PG31.0kΩ
REG4–STEP-UP CONVERTER
Input VoltagePower supplied from SYS (see Figure 1)2.45.5V
Output Voltage RangeVOUT4VSYS24V
FB4 Regulation VoltageVFB4No dimming475500525mV
FB4 LeakageREG4 disabled (EN4 = low)-0.050+0.005+0.050μA
Switching Frequency0.911.1MHz
Minimum Duty Cycle5%
Maximum Duty Cycle9094%
OVP4 Overvoltage DetectionVOVP242526V
OVP4 Input CurrentOVP4 = SYS, EN4 = high4μA
OVP4 Leakage CurrentREG4 disabled (EN4 = low),
OVP4 = SYS-1+0.001+1μA
n-Channel On-ResistanceVSYS = 4.0V, ILX4 = 200mA395mΩ
n-Channel Off-Leakage CurrentVLX4 = 28V-1+0.001+1μA
n-Channel Current Limit555695950mA
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
ELECTRICAL CHARACTERISTICS (continued)
(DC, LX_ unconnected; VEP= VGND= 0V, VBAT= 4V, DLIM[1:2] = 00, EN123 = EN4 = low, VFB1= VFB2= VFB3= 1.1V, VFB4= 0.6V,
PV13 = PV2 = SYS, TA= -40°C to +85°C, capacitors as shown in Figure 1, RCISET= 3kΩ, unless otherwise noted.) (Note 3)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LED DIMMING CONTROL (EN4)
EN4 Low Shutdown Delay tSHDN 2 3.2 ms
EN4 High Enable Delay (Figure 8) tHI_INIT 100 μs
EN4 Low Time tLO 0.5 500 μs
EN4 High Time tHI 0.5 μs
RESET (RST1)
Reset Trip Threshold VTHRSTVoltage from FB1 to GND, VFB1 falling,
50mV hysteresis 0.765 0.858 0.945 V
Reset Deassert Delay Time tDRST 180 200 220 ms
Reset Glitch Filter tGLRST 50 μs
LOGIC (DLIM1, DLIM2, EN123, EN4, CHG,RST1)
Logic Input-Voltage Low VDC = 4.1V to 5.5V, VSYS = 2.6V to 5.5V 0.4 V
Logic Input-Voltage High VDC = 4.1V to 5.5V, VSYS = 2.6V to 5.5V 1.2 V
Logic Input Pulldown Resistance VLOGIC = 0.4V to 5.5V, CEN, EN123, EN4 400 760 1200 k
Logic Leakage Current VLOGIC = 0 to 5.5V, DLIM1, DLIM2 -1.0 +0.001 +1.0 μA
Logic Output Voltage Low ISINK = 1mA 7 15 mV
Logic Output-High Leakage
Current VLOGIC = 5.5V -1.0 +0.001 +1.0 μA
Note 3:Limits are 100% production tested at TA= +25°C. Limits over the operating temperature range are guaranteed through cor-
relation using statistical quality control (SQC) methods.
Note 4:The charger transitions from done to fast-charge mode at this BAT recharge threshold.
Note 5:The charger transitions from fast-charge to top-off mode at this top-off threshold (Figure 2).
Note 6:The maximum output current is guaranteed by correlation to the p-channel current-limit threshold, p-channel on-resistance,
n-channel on-resistance, oscillator frequency, input voltage range, and output voltage range. The parameter is stated for
a 4.7μH inductor with 0.13Ωseries resistance. See the Step-Down Converter Maximum Output Currentsection for more
information.
Note 7:The step-down output voltages are 1% high with no load due to the load-line architecture.
Note 8:The skip-mode current threshold is the transition point between fixed-frequency PWM operation and skip-mode operation.
The specification is given in terms of output load current for inductor values shown in the typical application circuit (Figure 1).
Note 9:Line regulation for the step-down converters is measured as ΔVOUT/ΔD, where D is the duty cycle (approximately
VOUT/VIN).
Note 10:REG2 is disabled by connecting PV2 to ground, decreasing the quiescent current.
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
DC QUIESCENT CURRENT vs.
DC VOLTAGE (CHARGER ENABLED)
DC VOLTAGE (V)
QUIESCENT CURRENT (mA)
MAX8819A toc01
FALLING
RISING
DC QUIESCENT CURRENT
vs. DC VOLTAGE (CHARGER DISABLED)
DC VOLTAGE, VDC (V)
QUIESCENT CURRENT (mA)
MAX8819A toc02
RISINGFALLING
BATTERY LEAKAGE CURRENT
vs. BATTERY VOLTAGE
BATTERY VOLTAGE (V)
BATTERY LEAKAGE CURRENT (nA)
MAX8819A toc030.51.01.52.02.53.03.54.04.55.0
VDC = 5V
EN123 = 1
Typical Operating Characteristics
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
BATTERY LEAKAGE CURRENT
vs. BATTERY VOLTAGE
BATTERY VOLTAGE (V)
BATTERY LEAKAGE CURRENT (nA)
MAX8819A toc040.51.01.52.02.53.03.54.04.55.0
VDC = 0V
EN123 = 0
CHARGE CURRENT
vs. BATTERY VOLTAGE
BATTERY VOLTAGE (V)
CHARGE CURRENT (mA)
MAX8819A toc054215
RCISET = 6.8kΩ
RCISET = 15kΩ
BATTERY REGULATION VOLTAGE
vs. TEMPERATURE
TEMPERATURE (°C)
BATTERY REGULATION VOLTAGE (V)
MAX8819A toc06
SYSTEM VOLTAGE
vs. SYSTEM CURRENT
OUTPUT CURRENT (mA)
SYSTEM VOLTAGE (V)
MAX8819A toc071002003004005006007008009001000
DC UNCONNECTED
VBATT = 4V
SYSTEM VOLTAGE
vs. SYSTEM CURRENT
OUTPUT CURRENT (mA)
SYSTEM VOLTAGE (V)
MAX8819A toc081002003004005006007008009001000
VDC = 5.1V
VBATT = 4V
DLIM[1:2] = 10
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
SYSTEM VOLTAGE
vs. SYSTEM CURRENT
OUTPUT CURRENT (mA)
SYSTEM VOLTAGE (V)
MAX8819A toc091002003004005006007008009001000
VDC = 5.1V
VBATT = 4V
DLIM[1:2] = 01
AC-TO-DC ADAPTER CONNECT
MAX8819A toc10
400μs/div
VDC5V/div
2V/div
1A/div
1A/div
3.84V4.3V4V
-1A
VSYS
IDC
IBAT
CDC CHARGING
NEGATIVE BATTERY
CURRENT FLOWS
INTO THE
BATTERY
BATTERY CHARGER
SOFT-START
CSYS CHARGING
POWER-UP SEQUENCING
(MAX8819A/MAX8819B)
MAX8819A toc11
2ms/div
VEN1232V/div
2V/div
2V/div
2V/div
VV1
VV2
VV3
POWER-UP SEQUENCING
(MAX8819C)
MAX8819A toc12
1ms/div
2V/div
2V/div
2V/div
VV1
VV2
VV3
POWER-DOWN SEQUENCING
(MAX8819C)
MAX8819A toc13
100μs/div
2V/div
2V/div
2V/div
2V/div
VV1
VRST1
VV2
VV3
IV3 = 200mA
IV2 = 180mA
IV1 = 220mA
REG1 EFFICIENCY
vs. LOAD CURRENT (VREG1 = 3.01V)
LOAD CURRENT (mA)
REG1 EFFICIENCY (%)
MAX8819A toc14
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
REG1 LOAD REGULATION
REG1 LOAD CURRENT (mA)
REG1 OUTPUT VOLTAGE (V)
MAX8819A toc1550100150200250300350400
REG1 DROPOUT VOLTAGE
vs. LOAD CURRENT
OUTPUT CURRENT (mA)
DROPOUT VOLTAGE (mV)
MAX8819A toc1650100150200250300350400450
VOUT1 = 3V
VOUT1 = 3.3V
SYS IS 100mV BELOW THE
REG1 NOMINAL
REGULATION
VOLTAGE
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
REG1 LIGHT-LOAD SWITCHING
WAVEFORMS
MAX8819A toc17
2μs/div
20mV/div
AC-COUPLED
0mA
2V/div
100mA/divILX1
VLX1
VOUT1
20mA LOAD
REG1 HEAVY-LOAD SWITCHING
WAVEFORMS
MAX8819A toc18
400ns/div
20mV/div
AC-COUPLED
0mA
2V/div
200mA/divILX1
VLX1
VOUT1
200mA LOAD
LINE TRANSIENT
MAX8819A toc19
100μs/div4V
2V/div
50mV/div
AC-COUPLEDVOUT1
VSYS
VOUT1 = 3V
IOUT1 = 30mA
REG1 LOAD TRANSIENT (VOUT = 3V)
MAX8819A toc20
200μs/div
30mA
300mA
30mA
100mA/div
100mV/div
3V DC OFFSET
VOUT1
IOUT1
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
REG2 EFFICIENCY
vs. LOAD CURRENT (VREG2 = 1.82V)
LOAD CURRENT (mA)
REG2 EFFICIENCY (%)
MAX8819A toc21
REG2 LOAD REGULATION
REG2 LOAD CURRENT (mA)
REG2 OUTPUT VOLTAGE (V)
MAX8819A toc2250100150200250300350400
REG3 EFFICIENCY
vs. LOAD CURRENT (VREG3 = 1.21V)
LOAD CURRENT (mA)
REG3 EFFICIENCY (%)
MAX8819A toc23
REG3 LOAD REGULATION
REG3 LOAD CURRENT (mA)
REG3 OUTPUT VOLTAGE (V)
MAX8819A toc2450100150200250300350400
REG3 HEAVY-LOAD SWITCHING
WAVEFORMS
MAX8819A toc26
400ns/div
20mV/div
AC-COUPLED
2V/div
0mA
200mA/div
VOUT3
VLX3
ILX3
200mA LOAD
REG3 LIGHT-LOAD SWITCHING
WAVEFORMS
MAX8819A toc25
2μs/div
20mV/div
AC-COUPLED
2V/div
0mA
100mA/div
VOUT3
VLX3
ILX3
20mA LOAD
REG3 LOAD TRANSIENT
MAX8819A toc27
200μs/div
100mA/div
100mV/div
1.2V DC OFFSET
30mA30mA
320mA
IOUT3
VOUT3
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
LED EFFICIENCY vs. SYS VOLTAGE
SYS VOLTAGE (V)
LED EFFICIENCY (%)
MAX8819A toc28
6 LEDS
4 LEDS
ILED = 25mA
INDUCTOR: TOKO 1096AS-100M
DIODE: NXP PMEG3005EB
LED EFFICIENCY
vs. LED CURRENT (6 LEDS)
LED CURRENT (mA)
LED EFFICIENCY (%)
MAX8819A toc29510152025
VSYS = 3.6V
LED EFFICIENCY
vs. LED CURRENT (4 LEDS)
LED CURRENT (mA)
LED EFFICIENCY (%)
MAX8819A toc30510152025
VSYS = 3.6V
LED AND BOOST EFFICIENCY
vs. SYS VOLTAGE
SYS VOLTAGE (V)
EFFICIENCY (%)
MAX8819A toc31
ILED = 25mA
6 LEDS
INDUCTOR: TOKO 1096AS-100M
DIODE: NXP PMEG3005EB
BOOST
LED
REG4 INPUT CURRENT
vs. SYS VOLTAGE
SYS VOLTAGE (V)
REG4 INPUT CURRENT (mA)
MAX8819A toc32
6 LEDS, ILED = 25mA
REG4 STARTUP AND SHUTDOWN
RESPONSE
MAX8819A toc33
2ms/div
2V/div
10V/div
0mA
10mA/div
VEN4
VOVP4
ILED
FB4 VOLTAGE vs. LED CURRENT
FB4 VOLTAGE (mV)
MAX8819A toc34510152025
500
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
Typical Operating Characteristics (continued)
(Circuit of Figure 1, TA = +25°C, unless otherwise noted.)
MAXIMUM LED CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
LED CURRENT (mA)
MAX8819A toc35
MINIMUM LED CURRENT
vs. TEMPERATURE
TEMPERATURE (°C)
LED CURRENT (mA)
MAX8819A toc36
Pin Description
PINNAMEFUNCTIONCOMP4External Compensation Capacitor for REG4FB4REG4 Feedback InputOVP4Overvoltage Protection Node for REG4PG4REG4 Power GroundLX4Inductor Switching Node for REG4GNDAnalog GroundEN4REG4 Enable Input and Dimming Control Digital InputRST1
Active-Low, Open-Drain Reset Output. RST1 pulls low to indicate that FB1 is below its regulation
threshold. RST1 goes high 200ms after FB1 reaches its regulation threshold. RST1 is high-impedance
when EN123 is low, and DC is unconnected.BATPositive Battery Terminal Connection. Connect BAT to the positive terminal of a single-cell Li+/Li-Poly
battery. Bypass BAT to GND with a 4.7μF ceramic capacitor.SYS
System Supply Output. Bypass SYS to GND with a 10μF ceramic capacitor. When a valid voltage is
present at DC and DLIM[1:2] ≠ 11, VSYS is limited to 4.35V (MAX8819A/MAX8819C) or 5.3V
(MAX8819B). When the system load (ISYS) exceeds the input current limit, VSYS drops 75mV
(VBSREG) below VBAT, allowing both the external power source and the battery to service SYS. SYS is
connected to BAT through an internal 70mΩ system load switch when a valid source is not present at
DC.DCDC Power Input. DC is capable of delivering 1A to SYS. DC supports both AC adapters and USB
inputs. As shown in Table 1, the DC current limit is controlled by DLIM1 and DLIM2.CENBattery Charger Enable InputFB1Feedback Input for REG1. Connect FB1 to the center of a resistor voltage-divider from the REG1
output capacitors to GND to set the output voltage from 1V to VSYS.
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
Pin Description (continued)
PINNAMEFUNCTIONCISETCharge Rate Select Input. Connect a resistor from CISET to GND (RCISET) to set the fast-charge
current limit, prequalification-charge current limit, and top-off threshold.CHGActive-Low, Open-Drain Charge Status Output. CHG pulls low to indicate that the battery is charging.
See Figure 3 for more information.PG1REG1 Power GroundLX1Inductor Switching Node for REG1. When enabled, LX1 switches between PV13 and PG1 to regulate
the FB1 voltage to 1.0V. When disabled, LX1 is pulled to PG1 by 1kΩ in shutdown.PV13Power Input for the REG1 and REG3 Converters. Connect PV13 to SYS. Bypass PV13 to PG1 with a
4.7μF ceramic capacitor.LX3Inductor Switching Node for REG3. When enabled, LX3 switches between PV13 and PG3 to regulate
the FB3 voltage to 1.0V. When disabled, LX3 is pulled to PG3 by a 1kΩ internal resistor.PG3REG3 Power GroundDLIM1Input Current-Limit Selection Digital Input 1. Drive high or low according to Table 1 to set the DC input
current limit.FB2
Feedback Input for REG2. Connect FB2 to the center of a resistor voltage-divider from the REG2
output capacitors to GND to set the output voltage from 1V to VSYS. FB2 must be connected to GND if
REG2 is disabled by grounding PV2.FB3Feedback Input for REG3. Connect FB3 to the center of a resistor voltage-divider from the REG3
output capacitors to GND to set the output voltage from 1V to VSYS.EN123RE G1, RE G2, and RE G3 E nab l e Inp ut. D r i ve E N 123 hi g h to enab l e RE G1, RE G 2, and RE G3. D r i ve E N 123ow to d i sab l e RE G 1, RE G2, and RE G 3. The enab l e/d i sab l e seq uenci ng i s show n i n Fi g ur es 6 and 7.PV2
Power Input for REG2. Connect PV2 to SYS for normal operation. Bypass PV2 to PG2 with a 2.2μF
ceramic capacitor. For systems that do not require REG2, connect PV2, FB2, and PG2 to GND (LX2
may be unconnected or connected to GND).LX2Inductor Switching Node for REG2. When enabled, LX2 switches between PV2 and PG2 to regulate
the FB2 voltage to 1.0V. When disabled, LX2 is pulled to PG2 by a 1kΩ internal resistor.PG2REG2 Power GroundDLIM2Input Current-Limit Selection Digital Input 2. Drive high or low according to Table 1 to set the DC input
current limit.EPExposed Pad
MAX8819A/MAX8819B/MAX8819C
PMIC with Integrated Chargers and Smart
Power Selector in a 4mm x 4mm TQFN
Detailed Description
The MAX8819_ is a complete power solution that
includes a battery charger, step-down converters, and
WLED power. As shown in Figure 1, the IC integrates a
DC power input, Li+/Li-Poly battery charger, three step-
white LEDs. All three step-down converters feature
adjustable output voltages set with external resistors.
The MAX8819_ has one external power input that con-
nects to either an AC-to-DC adapter or USB port. Logic
inputs DLIM1 and DLIM2 select the desired input cur-
rent limit.
REG1
STEP-DOWN
DC-DC
PV13
LX1
FB1
PG1
EN123
BIAS
REG1/RESET
87% FALLING
50us BLANKING
92% RISING
80ms DELAY
OFF
C8*
10µF
200kΩ
4.7µH
OUT1
3.0V
400mA
100kΩ
4.7µF
SYS
PG1
PG1
PG1
RST1
R10
470kΩ
OUT1
RST1
REG2
STEP-DOWN
DC-DC
PV2
LX2
FB2
PG2
C10*
10µF
R12
80.6kΩL2
4.7µH
OUT2
1.8V
200mA
R13
100kΩ
2.2µF
SYS
PG2
PG2
PG2
REG3
STEP-DOWN
DC-DC
LX3
FB3
PG3
*22µF FOR MAX8819C IS RECOMMENDED.
C11*
10µF
R14
20.0kΩ
4.7µH
OUT3
1.2V
300mA
R15
100kΩ
PG3PG3
PULSE
DIMMING
GND
REG4
STEP-UP
DC-DC
LX4
OVP4
PG4
PG4
FB4
SYS
0.1µF
50V
X7RPG4
EN4
L4
10µH
OUT4
OFF
PV13
PV13
PWM
PWM
PWM
UP TO 6
WLED
COMP4
0.022µF
(25mA)
PG4
0.1µF
SMART
POWER
SELECTOR
Li+/Li-Poly
BATTERY
CHARGER AND
SYSTEM LOAD
SWITCH
DLIM1DLIM2
GLITCH FILTER
4.7µF
AC-TO-DC
ADAPTER
SYS
BAT
CISET
10µF
SYS
4.7µFOUT1
CHG
470kΩ
CHG
OFF
Li+/LiPo
BATTERY
CEN
DLIM1
DLIM2BATTERY
CAPACITY
(mAh)
DESIRED
CHARGE
RATE (C)
FAST-
CHARGE
CURRENT
(mA)
9004.75632100014751951SUSPEND
DC ILIM (mA)
R7 (kΩ)
MAX8819A
MAX8819B
MAX8819C
Figure 1. Functional Diagram/Typical Applications Circuit

Partno	Mfg	Dc	Qty	Available	Descript
MAX8819AETI+	MAXIM	N/a	238	avai	PMIC with Integrated Charger and Smart Power Selector™ in a 4mm x 4mm TQFN