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MAX8662ETM+-MAX8662ETM+T-MAX8663ETL+-MAX8663ETL+T
Power-Management ICs for Single-Cell, Li+ Battery-Operated Devices
MAX8662/MAX8663
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
Ordering Information19-0732; Rev 2; 12/10
General DescriptionThe MAX8662/MAX8663 power-management ICs
(PMICs) are efficient, compact devices suitable for
smart cellular phones, PDAs, Internet appliances, and
other portable devices. They integrate two synchronous
buck regulators, a boost regulator driving two to seven
white LEDs, four low-dropout linear regulators (LDOs),
and a linear charger for a single-cell Li-ion (Li+) battery.
Maxim’s Smart Power Selector™ (SPS) safely distrib-
utes power between an external power source (AC
adapter, auto adapter, or USB source), battery, and the
system load. When system load peaks exceed the
external source capability, the battery supplies supple-
mental current. When system load requirements are
small, residual power from the external power source
charges the battery. A thermal-limiting circuit limits bat-
tery-charge rate and external power-source current to
prevent overheating. The PMIC also allows the system
to operate with no battery or a discharged battery.
The MAX8662 is available in a 6mm x 6mm, 48-pin TQFN
package, while the MAX8663, without the LED driver, is
available in a 5mm x 5mm, 40-pin TQFN package.
Features
Applications+Denotes a lead(Pb)-free/RoHS-compliant package.
*EP = Exposed pad.
PARTTEMP RANGEPIN-PACKAGE
MAX8662ETM+-40°C to +85°C48 TQFN-EP*
6mm x 6mm x 0.8mm
MAX8663ETL+-40°C to +85°C40 TQFN-EP*
5mm x 5mm x 0.8mm
Two 95%-Efficient 1MHz Buck Regulators
Main Regulator: 0.98V to VIN at 1200mA
Core Regulator: 0.98V to VINat 900mA
1MHz Boost WLED Driver
Drives Up to 7 White LEDs at 30mA (max)
PWM and Analog Dimming Control
Four Low-Dropout Linear Regulators
1.7V to 5.5V Input Range
15µA Quiescent Current
Single-Cell Li+ Charger
Adapter or USB Input
Thermal-Overload Protection
Smart Power Selector (SPS)
AC Adapter/USB or Battery SourceCharger-Current and System-Load SharingSmart Phones and PDAs
MP3 and Portable Media Players
Palmtop and Wireless Handhelds
TOP VIEW
MAX8662
TQFN(6mm x 6mm)THM
ISET
REF
GND
OUT4
IN45
OUT5
EN4
EN5
PWM
FB123456789101112
POK
PSET
SL2
SL1
OUT7
IN67
OUT6
PG3
LX3
EN7
EN6
CEN
CHG
BRT
BAT2BAT1
SYS2SYS1
DC2DC1EN3
PEN2PEN13534333231302928272625
EN1PG1LX1PV1OVPCSCC3FB2PV2LX2PG2EN2
Pin ConfigurationsOUT1
0.98V TO VIN / 1.2A
OUT2
0.98V TO VIN / 0.9A
OUT3
30mA
WLEDSYS
OUT7
EN1
500mA
150mA
300mA
150mA
Li+
BATTERY
DC/USB
INPUT
TO SYSTEM
POWER
BAT
LX1
LX2
LX3
(MAX8662 ONLY)
OUT6
OUT5
OUT4
TO SYSEN2
EN3
EN4
EN5
EN6
EN7
PWR OK
CHARGE
STATUS
CHARGE
ENABLE
SL1
SL2
OUT4–OUT7
VOLTAGE
SELECT
MAX8662
MAX8663
POK
CHG
CEN
ypical Operating Circuit
EVALUATION KIT
AVAILABLE
MAX8662/MAX8663
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS (Input Limiter and Battery Charger)(VDC= 5V, VBAT= 4V, VCEN= 0V, VPEN_= 5V, RPSET= 3kΩ, RISET= 3.15kΩ, CCT= 0.068µF, TA= -40°C to +85°C, unless otherwise
noted.) (Note 1)
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.
LX3 to GND............................................................-0.3V to +33V
DC_ to GND..............................................................-0.3V to +9V
BAT_, CEN, CHG, EN_, PEN_, POK, PV_, PWM,
SYS_, LX1, CS, LX2 to GND.................................-0.3V to +6V
VL to GND................................................................-0.3V to +4V
BRT, CC3, FB_, IN45, IN67, OVP, REF,
SL_ to GND...........................................-0.3V to (VSYS+ 0.3V)
CT, ISET, PSET, THM to GND.....................-0.3V to (VVL+ 0.3V)
OUT4, OUT5 to GND................................-0.3V to (VIN45+ 0.3V)
OUT6, OUT7 to GND................................-0.3V to (VIN67+ 0.3V)
PG_ to GND...........................................................-0.3V to +0.3V
BAT1 + BAT2 Continuous Current...........................................3A
SYS1 + SYS2 Continuous Current (2 pins)..............................3A
LX_ Continuous Current........................................................1.5A
Continuous Power Dissipation (TA= +70°C)
40-Pin 5mm x 5mm TQFN
(derate 35.7mW/°C above +70°C)
(multilayer board).......................................................2857mW
48-Pin 6mm x 6mm TQFN
(derate 37mW/°C above +70°C) (multilayer board)...2963mW
Operating Temperature Range..........................-40°C to +85°C
Junction Temperature Range............................-40°C to +125°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
Soldering Temperature (reflow).......................................+260°C
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
INPUT LIMITERDC Operating RangeVDC(Note 2)4.18.0V
DC Undervoltage ThresholdVDC_LVDC rising, 500mV hysteresis3.94.04.1V
DC Overvoltage ThresholdVDC_HVDC rising, 100mV hysteresis6.66.97.2V
ISYS = IBAT = 0mA, VCEN = 0V1.5DC Supply CurrentISYS = IBAT = 0mA, VCEN = 5V0.9mA
DC Shutdown CurrentVDC = 5V, VCEN = 5V, VPEN1 = VPEN2 = 0V (USB
suspend mode)110180µA
DC-to-SYS Dropout
On-ResistanceRDC_SYSVDC = 5V, ISYS = 400mA, VCEN = 5V0.10.2Ω
DC-to-BAT Dropout
ThresholdVDR_DC_BATWhen VSYS regulation and charging stops, VDC
falling, 150mV hysteresis205085mV
VL VoltageVVLIVL = 0 to 10mA3.13.33.5V
SYS Regulation VoltageVSYS_REGVDC = 5.8V, ISYS = 1mA, VCEN = 5V5.25.35.4V
VPEN1 = 5V, VPEN2 = 5V,
RPSET = 1.5kΩ180020002200
VPEN1 = 5V, VPEN2 = 5V,
RPSET = 3kΩ90010001100
VPEN1 = 5V, VPEN2 = 5V,
RPSET = 6kΩ450500550
VPEN1 = 0V, VPEN2 = 5V
(500mA USB mode)450475500
DC Input Current LimitIDC_LIMVDC = 5V, VSYS = 4.0V
VPEN1 = VPEN2 = 0V
(100mA USB mode)8090100
PSET Resistance RangeRPSETGuaranteed by SYS current limit1.56.0kΩ
MAX8662/MAX8663
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
ELECTRICAL CHARACTERISTICS (Input Limiter and Battery Charger) (continued)(VDC= 5V, VBAT= 4V, VCEN= 0V, VPEN_= 5V, RPSET= 3kΩ, RISET= 3.15kΩ, CCT= 0.068µF, TA= -40°C to +85°C, unless otherwise
noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
BATTERY CHARGERBAT-to-SYS On-ResistanceRBAT_REGVDC = 0V, VBAT = 4.2V, ISYS = 1A4080mΩ
BAT-to-SYS Reverse
Regulation VoltageD C = 5V , V P E N 1 = V P E N 2 = 0V ( U S B 100m A m od e) ,
ISYS = 200mA (BAT to SYS voltage drop during SYS
overload)100150mV
TA = +25°C4.1794.2004.221BAT Regulation VoltageVBAT_REGIBAT = 0mATA = -40°C to +85°C4.1584.2004.242
BAT Recharge ThresholdBAT voltage drop to restart charging-140-100-60mV
RISET = 1.89kΩ1250
RISET = 3.15kΩ675750825BAT Fast-Charge Current
ISYS = 0mA,
RPSET = 1.5kΩ,
VPEN1 = VPEN2 = 5VRISET = 7.87kΩ300
BAT Prequalification CurrentVBAT = 2.5V, RISET = 3.15kΩ (prequalification
current is 10% of fast-charge current)75mA
ISET Resistance RangeRISETGuaranteed by BAT charging current
(1.5A to 300mA)1.577.87kΩ
VISET-to-IBAT RatioRISET = 3.15kΩ (ISET output voltage to actual
charge-current ratio)2V/A
Charger Soft-Start TimetSS_CHGCharge-current ramp time1.5ms
BAT Prequalification
ThresholdVBAT rising, 180mV hysteresis2.93.03.1V
VDC = 0V0.015BAT Leakage CurrentVBAT = 4.2V,
outputs disabledVDC = VCEN = 5V0.015µA
CHG and Top-Off Threshold
IBAT where CHG goes
high, and top-off timer;
IBAT falling (7.5% of
fast-charge current)
RISET = 3.15kΩ56.25mA
Timer-Suspend ThresholdIBAT falling (Note 3)250300350mV
Timer AccuracyCCT = 0.068µF-20+20%
Prequalification TimetPREQUALFrom CEN high to end of prequalification charge,
VBAT = 2.5V, CCT = 0.068µF30Min
Charge TimetFST-CHGFrom CEN high to end of fast charge,
CCT = 0.068µF300Min
Top-Off TimetTOP-OFFFrom CHG high to end of fast charge,
CCT = 0.068µF30Min
Charger Thermal-Limit
Temperature(Note 4)100°C
Charger Thermal-Limit GainRPSET = 3kΩ50m A/°C
MAX8662/MAX8663
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
ELECTRICAL CHARACTERISTICS (Input Limiter and Battery Charger) (continued)(VDC= 5V, VBAT= 4V, VCEN= 0V, VPEN_= 5V, RPSET= 3kΩ, RISET= 3.15kΩ, CCT= 0.068µF, TA= -40°C to +85°C, unless otherwise
noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
THERMISTOR INPUT (THM)THM Internal Pullup
Resistance10kΩ
THM Resistance Threshold,
HotResistance falling (1% hysteresis)3.733.974.21kΩ
THM Resistance Threshold,
ColdResistance rising (1% hysteresis)26.9828.730.42kΩ
THM Resistance Threshold,
DisabledResistance falling270300330Ω
LOGIC I/O (POK, CHG, PEN_, EN_, PWM, CEN)Input Logic-High Level1.3V
Input Logic-Low Level0.4V
VLOGIC = 0V to 5.5V, TA = +25°C-1+0.001+1Logic Input-Leakage CurrentVLOGIC = 5.5V, TA = +85°C0.01µA
Logic Output-Voltage LowISINK = 1mA10100mV
TA = +25°C0.0011Logic Output-High Leakage
CurrentVLOGIC = 5.5VTA = +85°C0.01µA
ELECTRICAL CHARACTERISTICS (Output Regulator)(VSYS_= VPV_ = VIN45= VIN67= 4.0V, VBRT= 1.25V, circuit of Figure 1, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS
SYSTEMSYS Operating RangeVSYS2.65.5VY S U nd er vol tag e Thr eshol d VUVLO_SYSVSYS rising, 100mV hysteresis2.42.52.6V
Extra supply current when at least one output is on3570
OUT1 on, VPWM = 0V1635
OUT2 on, VPWM = 0V1635
OUT3 on12mA
OUT4 on (current into IN45)2030
OUT5 on (current into IN45)1625
OUT6 on (current into IN67)1727
SYS Bias Current Additional
Regulator Supply CurrentNot including
SYS bias current
OUT7 on (current in IN67)1625
Inter nal Osci l l ator Fr eq uencyPWM frequency of OUT1, OUT2, and OUT30.91.01.1MHz
BUCK REGULATOR 1VPWM = 0V1635µA
Supply Current
ISYS + IPV1, no load,
not including SYS
bias currentVPWM = 5V2.9mA
Output Voltage RangeVOUT1Guaranteed by FB accuracy0.983.30V
MAX8662/MAX8663
Power-Management ICs for
Single-Cell, Li+ Battery-Operated Devices
ELECTRICAL CHARACTERISTICS (Output Regulator) (continued)(VSYS_= VPV_ = VIN45= VIN67= 4.0V, VBRT= 1.25V, circuit of Figure 1, TA= -40°C to +85°C, unless otherwise noted.) (Note 1)
PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITSFB Regulation AccuracyFrom VFB1 = 0.98V, IOUT1 = 0 to 1200mA,
VOUT1 = 0.98V to 3.3V-3+3%
FB1 Input Leakage Current0.010.10µA
VPV1 = 3.3V0.120.24pMOS On-ResistanceILX1 = 100mAVPV1 = 2.6V0.15Ω
VPV1 = 3.3V0.20.4nMOS On-ResistanceILX1 = 100mAVPV1 = 2.6V0.3Ω
pMOS Current Limit1.41.82.2Aki p M od e Transi ti on C ur r ent90mA
nMOS Zero-Cross Current25mA
VLX1 = VPV1 = 5.5V0.011.00LX LeakageVEN1 = 0V, VSYS = 5.5V,
TA = +25°CVLX1 = 0V, VPV1 = 5.5V-5.00-0.01µA
Soft-Start Time400µs
BUCK REGULATOR 2VPWM = 0V1635µASupply CurrentISYS + IPV2, no l oad , notncl ud i ng S Y S b i as cur r entVPWM = 5V2.1mA
Output Voltage RangeGuaranteed by FB accuracy0.983.30V
Maximum Output Current900mA
FB Regulation AccuracyFrom VFB2 = 0.98V, IOUT2 = 0 to 600mA,
VOUT2 = 0.98V to 3.3V-3+3%
FB2 Input Leakage Current0.010.10µA
VPV2 = 3.3V0.20.4pMOS On-ResistanceILX2 = 100mAVPV2 = 2.6V0.3Ω
VPV2 = 3.3V0.20.4nMOS On- ResistanceILX2 = 100mAVPV2 = 2.6V0.3Ω
pMOS Current Limit1.071.301.55Aki p M od e Transi ti on C ur r ent90mA
nMOS Zero-Cross Current25mA
VLX2 = VPV2 = 5.5V0.011.00LX LeakageVEN2 = 0V, VSYS = 5.5V,
TA = +25°CVLX2 = 0V, VPV2 = 5.5V-5.00-0.01µA
Soft-Start Time400µs
BOOST REGULATOR FOR LED DRIVERSupply CurrentAt S Y S , no l oad , notncl ud i ng S Y S b i as cur r entSwitching1mA
Output RangeVOUT3VSYS30V
Minimum Duty CycleDMIN10%
Maximum Duty CycleDMAX9092%
CS Regulation VoltageVCS0.290.320.35V
OVP Regulation VoltageDuty = 90%, ILX3 = 0mA1.2251.2501.275V
