MAX17006BETP+T ,1.2MHz, Low-Cost, High-Performance ChargersFeaturesThe MAX17005B/MAX17006B/MAX17015B are high-fre-♦ High Switching Frequency (1.2MHz)quency mu ..
MAX17006ETP , 1.2MHz Low-Cost, High-Performance Chargers
MAX17006ETP+ ,1.2MHz Low-Cost, High-Performance ChargersFeatures♦ High Switching Frequency (1.2MHz)The MAX17005/MAX17006/MAX17015 are high-frequen-cy multi ..
MAX17007AGTI , Dual and Combinable QPWM Graphics Core Controllers for Notebook Computers
MAX17007AGTI+ ,Dual and Combinable QPWM Graphics Core Controllers for Notebook ComputersFeatures♦ Dual Quick-PWM with Fast Transient ResponseThe MAX17007A/MAX17007B/MAX17008 are dual Quic ..
MAX17007AGTI+T ,Dual and Combinable QPWM Graphics Core Controllers for Notebook ComputersELECTRICAL CHARACTERISTICS(V = 12V, V = V = V = V = 5V, V = 2V, SKIP = GND, T = 0 to +85°C, unless ..
MAX4512ESE ,Quad, Rail-to-Rail, Fault-Protected, SPST Analog SwitchesFeaturesThe MAX4511/MAX4512/MAX4513 are quad, single-' ±40V Fault Protection with Power Offpole/sin ..
MAX4512ESE+ ,Quad, Rail-to-Rail, Fault-Protected, SPST Analog SwitchesELECTRICAL CHARACTERISTICS—Dual SuppliesV+ = +15V, V- = -15V, GND = 0V, T =T to T , unless otherwis ..
MAX4513ESE ,Quad, Rail-to-Rail, Fault-Protected, SPST Analog SwitchesApplicationsATE Equipment IN1 1 16IN2 Data AcquisitionCOM1 2 15 COM2Industrial and Process-Control ..
MAX4513ESE+ ,Quad, Rail-to-Rail, Fault-Protected, SPST Analog SwitchesMAX4511/MAX4512/MAX451319-4760; Rev 1; 8/02Quad, Rail-to-Rail, Fault-Protected,SPST Analog Switches
MAX4514CSA ,Low-Voltage, Low-On-Resistance, SPST, CMOS Analog SwitchesELECTRICAL CHARACTERISTICS—+5V Supply (continued)(V+ = +4.5V to +5.5V, V = 2.4V, V = 0.8V, T = T to ..
MAX4514CSA+ ,Low-Voltage, Low-On-Resistance, SPST, CMOS Analog SwitchesELECTRICAL CHARACTERISTICS—+5V Supply (continued)(V+ = +4.5V to +5.5V, V = 2.4V, V = 0.8V, T = T to ..
MAX17005BETP+T-MAX17006BETP+T
1.2MHz, Low-Cost, High-Performance Chargers
General DescriptionThe MAX17005B/MAX17006B/MAX17015B are high-fre-
quency multichemistry battery chargers. These circuits
feature a new high-frequency current-mode architecture
that significantly reduces component size and cost. The
charger uses a high-side MOSFET with n-channel syn-
chronous rectifier. Widely adjustable charge current,
charge voltage, and input current limit simplify the con-
struction of highly accurate and efficient chargers.
The charge voltage and charge current are set with
analog control inputs. The charge current setting can
also be adjusted with a PWM input. High-accuracy cur-
rent-sense amplifiers provide fast cycle-by-cycle cur-
rent-mode control to protect against short circuits to the
battery and respond quickly to system load transients.
In addition, the charger provides a high-accuracy ana-
log output that is proportional to the adapter current. In
the MAX17015B, this current monitor remains active
when the adapter is absent to monitor battery dis-
charge current.
The MAX17005B charges three or four Li+ series cells,
and the MAX17006B charges two or three Li+ series
cells. The MAX17015B adjusts the charge voltage set-
ting and the number of cells through a feedback resis-
tor-divider from the output. All variants of the charger
can provide at least 4A of charge current with a 10mΩ
sense resistor.
The charger utilizes a charge pump to control an n-channel
adapter selection switch. The charge pump remains
active even when the charger is off. When the adapter
is absent, a p-channel MOSFET selects the battery.
The MAX17005B/MAX17006B/MAX17015B are avail-
able in a small, 4mm x 4mm x 0.8mm 20-pin, lead-free
TQFN package. An evaluation kit is available to reduce
design time.
ApplicationsNotebook Computers
Tablet PCs
Portable Equipment with Rechargeable Batteries
FeaturesHigh Switching Frequency (1.2MHz)Controlled Inductor Current-Ripple Architecture
Reduced BOM Cost
Small Inductor and Output Capacitors±0.4% Accurate Charge Voltage±2.5% Accurate Input-Current Limiting±3% Accurate Charge CurrentSingle-Point CompensationMonitor Outputs for
±2.5% Accurate Input Current Limit
±2.5% Battery Discharge Current
(MAX17015B Only)
AC Adapter DetectionAnalog/PWM Adjustable Charge-Current SettingBattery Voltage Adjustable for 3 and 4 Cells
(MAX17005B) or 2 and 3 Cells (MAX17006B)Adjustable Battery Voltage (4.2V to 4.4V/Cell)Cycle-by-Cycle Current Limit
Battery Short-Circuit Protection
Fast Response for Pulse Charging
Fast System-Load-Transient ResponseProgrammable Charge Current < 5AAutomatic System Power Source Selection with
n-Channel MOSFETInternal Boost Diode+8V to +26V Input Voltage Range
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
Ordering Information19-4576; Rev 1; 7/09
+Denotes a lead(Pb)-free/RoHS-compliant package.
**EP = Exposed pad.
PARTTEMP RANGEPIN-PACKAGE
MAX17005BETP+ -40°C to +85°C 20 TQFN-EP**
MAX17006BETP+-40°C to +85°C 20 TQFN-EP**
MAX17015BETP+-40°C to +85°C 20 TQFN-EP**
Pin Configuration and Minimal Operating Circuit appear at
EVALUATION KIT
AVAILABLE
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(Circuit of Figure 1, VDCIN= VCSSP= VCSSN= 19V, VBATT= VCSIP= VCSIN= 16.8V, VVCTL= VAA, VISET= 1V, TA
= 0°C to +85°C,unless otherwise noted. Typical values are at TA= +25°C.)
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.
DCIN, CSSP, CSSN, BATT, CSIN, CSIP, ACOK,
LX to AGND.......................................................-0.3V to +30V
BST to LDO.............................................................-0.3V to +30V
CSIP to CSIN, CSSP to CSSN..............................-0.3V to +0.3V
IINP, FB, ACIN, CC to AGND.....................-0.3V to (VAA+ 0.3V)
VAA, LDO, ISET, VCTL to AGND.............................-0.3V to +6V
DHI to LX...................................................-0.3V to (VBST+ 0.3V)
BST to LX..................................................................-0.3V to +6V
DLO to PGND...........................................-0.3V to (VLDO+ 0.3V)
PGND to AGND....................................................-0.3V to +0.3V
Continuous Power Dissipation (TA= +70°C)
16-Pin TQFN (derate 16.9mW/°C above +70°C)....1349.1mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-60°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERCONDITIONSMINTYPMAXUNITS
CHARGE-VOLTAGE REGULATION2 cells, VVCTL = VAGND (MAX17006B) 8.3664 8.40 8.4336
3 cells, VVCTL = VAA (MAX17005B/MAX17006B) 12.549 12.60 12.651
4 cells, VVCTL = VAGND (MAX17005B) 16.733 16.80 16.867 Battery Regulation-Voltage Accuracy
FB accuracy using FB divider (MAX17015B)
(Note 1) 2.0916 2.1 2.1084
FB Input Bias Current -1 +1 µA
2 cells (MAX17006B), 4 cells (MAX17005B) 0 VAA/2
- 0.2
VCTL Range
3 cells (MAX17005B/MAX17006B) VAA/2
+ 0.2 VAA
VCTL Gain VCELL/VVCTL 5.85 6 6.15 V/V
VCTL Input Bias Current VVCTL = VAGND and VCTL = VAA-1 +1 µA
CHARGE-CURRENT REGULATION ISET Range 0 VAA/2 V
ISET = 1.4V 80 ISET Full-Scale Setting ISET = 99.9% duty cycle 60 mV
58.2 60 61.8 mV VISET = VAA/4 or ISET
= 99.9% duty cycle -3 +3 %
38.2 40 41.8 mV
Full-Charge Current Accuracy
(CSIP to CSIN) VISET = VAA/6 or ISET
= 66.7% duty cycle -4.5 +4.5 %
1.4 3 4.6 mV Trickle Charge-Current Accuracy
VBATT = 1V to 16.8V
VISET = VAA/80 or ISET
= 5% duty cycle -52 +52 %
Charge-Current Gain Error Based on VISET = VVAA/4 and VISET = VVAA/80 -2 +2 %
Charge-Current Offset Error Based on VISET = VVAA/4 and VISET = VVAA/80 -1.4 +1.4 mV
BATT/CSIP/CSIN Input-Voltage Range 0 24 V
ISET falling 21 26 31 ISET Power-Down Mode Threshold ISET rising 33 40 47 mV
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
PARAMETERCONDITIONSMINTYPMAXUNITSVISET = 3V -0.2 +0.2 ISET Input Bias Current CSSN = BATT, VISET= 5V -0.2 +0.2 µA
Rising 2.4 ISET PWM Threshold Falling 0.8 V
ISET Frequency 0.128 500 kHz
ISET Effective Resolution fPWM = 1.6MHz 8 Bits
INPUT-CURRENT REGULATION 58.5 60 61.5 mV Input Current-Limit Threshold VCSSP - VCSSN-2.5 +2.5 %
CSSN Input Bias Current Adapter present at TA = +25°C -1 +1 µA
CSSP/CSSN Input-Voltage Range 8.0 26.0 V
IINP Transconductance VCSSP - VCSSN = 60mV 2.66 2.8 2.94 µA/mV
VCSSP - VCSSN = 60mV, VIINP= 0 to 4.5V -2.5+2.5IINP Accuracy VCSSP - VCSSN = 35mV -2.5 +2.5 %
SUPPLY AND LINEAR REGULATORDCIN Input-Voltage Range 8 26 V
DCIN falling 7.9 8.1 DCIN Undervoltage-Lockout (UVLO) Trip-Point DCIN rising 8.7 8.9 V
Adapter present 3 6 mA DCIN + CSSP + CSSNQuiescent Current
(Note 2)Adapter absent 30 50 µA
Adapter absent 10 20 VBATT = 16.8V Charger shutdown 10 20 BATT + CSIP + CSIN + LX Input Current
(Note 2)
VBATT = 2V to 19V, adapter present 200 500
µA
LDO Output Voltage 8.0V < VDCIN < 26V, no load 5.15 5.35 5.55 V
LDO Load Regulation 0 < ILDO < 40mA 100 200 mV
LDO UVLO Threshold 3.2 4.1 5.0 V
REFERENCESVAA Output Voltage IVAA = 50µA 4.18 4.20 4.22 V
VAA UVLO Threshold VAA falling 3.1 3.9 V
ACINACIN Threshold 2.058 2.1 2.142 V
ACIN Threshold Hysteresis 10 20 30 mV
ACIN Input Bias Current -1 +1 µA
ACOK
ACOK Sink Current V ACOK = 0.4V, VACIN = 1.5V 6 mA
ACOK Leakage Current V ACOK = 5.5V, VACIN = 2.5V 1 µA
ELECTRICAL CHARACTERISTICS (continued)(Circuit of Figure 1, VDCIN= VCSSP= VCSSN= 19V, VBATT= VCSIP= VCSIN= 16.8V, VVCTL= VAA, VISET= 1V, TA
= 0°C to +85°C,unless otherwise noted. Typical values are at TA= +25°C.)
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
PARAMETERCONDITIONSMINTYPMAXUNITS
SWITCHING REGULATORDHI Off-Time K Factor VDCIN = 19V, VBATT = 10V 0.029 0.035 0.041 µs/V
Sense Voltage for Minimum Discontinuous
Mode Ripple Current VCSIP - VCSIN 10 mV
Zero-Crossing Comparator Threshold VCSIP - VCSIN 10 mV
Cycle-by-Cycle Current-Limit Sense VoltageVCSIP - VCSIN105 110 115 mV
DHI Resistance High IDLO = 10mA 1.5 3
DHI Resistance Low IDLO = -10mA 0.8 1.75
DLO Resistance High IDLO = 10mA 36
DLO Resistance Low IDLO = -10mA 37
ADAPTER DETECTION Adapter Absence-Detect Threshold VDCIN - VBATT, VDCIN falling +70 +120 +170 mV
Adapter Detect Threshold VDCIN - VBATT, VDCIN rising +360 +420 +580 mV
Adapter Switch Charge-Pump Frequency Charger shutdown 180 200 220 Hz
DLO 0.04 0.1 0.20 Adapter Switch Charge-Pump Refresh Pulse DHI 0.070.15 0.30µs
ELECTRICAL CHARACTERISTICS (continued)(Circuit of Figure 1, VDCIN= VCSSP= VCSSN= 19V, VBATT= VCSIP= VCSIN= 16.8V, VVCTL= VAA, VISET= 1V, TA
= 0°C to +85°C,unless otherwise noted. Typical values are at TA= +25°C.)
ELECTRICAL CHARACTERISTICS(Circuit of Figure 1, VDCIN= VCSSP= VCSSN= 19V, VBATT= VCSIP= VCSIN= 16.8V, VVCTL= VAA, VISET= 1V, TA
= -40°C to +85°C,unless otherwise noted.)
PARAMETERCONDITIONSMINTYPMAXUNITS
CHARGE-VOLTAGE REGULATION2 cells, VVCTL = VAGND (MAX17006B) 8.366 8.433
3 cells, VVCTL = VAA (MAX17005B/MAX17006B) 12.549 12.651
4 cells, VVCTL = VAGND (MAX17005B) 16.73 16.86 Battery Regulation-Voltage Accuracy
FB accuracy using FB divider (MAX17015B)
(Note 1) 2.091 2.108
2 cells (MAX17006B),
4 cells (MAX17005B) 0VAA/2
- 0.2 VCTL Range
3 cells (MAX17005B/MAX17006B) VAA/2
+ 0.2 VAA
VCTL Gain VCELL/VVCTL 5.85 6.15 V/V
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
ELECTRICAL CHARACTERISTICS (continued)(Circuit of Figure 1, VDCIN= VCSSP= VCSSN= 19V, VBATT= VCSIP= VCSIN= 16.8V, VVCTL= VAA, VISET= 1V, TA
= -40°C to +85°C,unless otherwise noted.)
PARAMETERCONDITIONSMINTYPMAXUNITS
CHARGE-CURRENT REGULATION ISET Range 0 VAA/2 V
57.5 62.5 mV VISET = VAA/4 or
ISET = 99.9% duty cycle -4.2 +4.2 %
38 42 mV
Full Charge-Current Accuracy
(CSIP to CSIN) VISET = VAA/6 or
ISET = 66.7% duty cycle -5 +5 %
1.4 4.6 mV Trickle Charge-Current Accuracy
VBATT = 1V to 16.8V
VISET = VAA/80 or
ISET = 5% duty cycle -52 +52 %
Charge-Current Gain Error Based on VISET = VVAA/4 and VISET = VVAA/80 -2 +2 %
Charge-Current Offset Error Based on VISET = VVAA/4 and VISET = VVAA/80 -1.4 +1.4 mV
BATT/CSIP/CSIN Input-Voltage Range 0 24 V
ISET falling 21 31 ISET Power-Down Mode Threshold
ISET rising 33 47
mV
Rising 2.4 ISET PWM Threshold Falling 0.8 V
ISET Frequency 0.128 500 kHz
INPUT-CURRENT REGULATION 58.2 61.8 mV Input Current-Limit Threshold VCSSP - VCSSN-3 +3 %
CSSN Input Bias Current Adapter present -2 +2 µA
CSSP/CSSN Input-Voltage Range 8.0 26.0 V
IINP Transconductance VCSSP - VCSSN = 60mV 2.66 2.94 µA/mV
VCSSP - VCSSN = 60mV, VIINP= 0 to 4.5V -2.5+2.5 IINP Accuracy
VCSSP - VCSSN = 35mV -2.5 +2.5
SUPPLY AND LINEAR REGULATORDCIN Input-Voltage Range 8 26 V
DCIN falling 7.9 DCIN UVLO Trip-Point DCIN rising 8.9 V
Adapter present 6 mA DCIN + CSSP + CSSNQuiescent Current
(Note 2)Adapter absent 50 µA
Adapter absent 20 VBATT = 16.8V Charger shutdown 20 BATT + CSIP + CSIN + LX Input Current
(Note 2)
VBATT = 2V to 19V, adapter present 500
µA
LDO Output Voltage 8.0V < VDCIN < 26V, no load 5.15 5.55 V
LDO Load Regulation 0 < ILDO < 40mA 200 mV
LDO UVLO Threshold 3.2 5.0 V
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
ELECTRICAL CHARACTERISTICS (continued)(Circuit of Figure 1, VDCIN= VCSSP= VCSSN= 19V, VBATT= VCSIP= VCSIN= 16.8V, VVCTL= VAA, VISET= 1V, TA
= -40°C to +85°C,unless otherwise noted.)
PARAMETERCONDITIONSMINTYPMAXUNITS
REFERENCESVAA Output Voltage IVAA = 50µA 4.18 4.22 V
VAA UVLO Threshold VAA falling 3.9 V
ACINACIN Threshold 2.058 2.142 V
ACIN Threshold Hysteresis 10 30 mV
ACOK
ACOK Sink Current V ACOK = 0.4V, VACIN = 1.5V 6 mA
SWITCHING REGULATORDHI Off-Time K Factor VDCIN = 19V, VBATT = 10V 0.029 0.041 µs/V
Cycle-by-Cycle Current-Limit Sense VoltageVCSIP - VCSIN105 115 mV
DHI Resistance High IDLO = 10mA 3
DHI Resistance Low IDLO = -10mA 1.75
DLO Resistance High IDLO = 10mA 6
DLO Resistance Low IDLO = -10mA 7
ADAPTER DETECTION Adapter Absence-Detect Threshold VDCIN - VBATT, VDCIN falling +70 +170 mV
Adapter Detect Threshold VDCIN - VBATT, VDCIN rising +320 +620 mV
Adapter Switch Charge-Pump Frequency 180 220 Hz
DLO 0.04 0.2 Adapter Switch Charge-Pump Refresh Pulse DHI 0.07 0.3µs
Note 1:Accuracy does not include errors due to external resistance tolerances.
Note 2:Adapter present conditions are tested at VDCIN= 19V and VBATT= 16.8V. Adapter absent conditions are tested at
VDCIN= 16V, VBATT= 16.8V.
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
Typical Operating Characteristics(Circuit of Figure 1, adapter = 19V, battery = 10V, ISET = 1.05V, VCTL = AGND, TA= +25°C, unless otherwise noted.)
IINP DC ERROR
vs. SYSTEM CURRENTMAX17005B toc01
SYSTEM CURRENT (A)
IINP ERROR (%)312
IINP ERROR
vs. SYSTEM CURRENT
MAX17005B toc02
SYSTEM CURRENT (A)
IINP ERROR (%)
VBATT = 16.8V
VBATT = 8.4VVBATT = 12.6V
ISET PWM DUTY-CYCLE CHANGEMAX17005B toc03
DUTY CYCLE
CHARGE-CURRENT ERROR (%)
ISET PWM DUTY-CYCLE CHANGE
MAX17005B toc04
DUTY CYCLE
CHARGE CURRENT (A)9010203040506070
ISET PWM FREQUENCY SWEEP
MAX17005B toc05
FREQUENCY (kHz)
CHARGE-CURRENT ERROR (%)
DUTY CYCLE = 75%
DUTY CYCLE = 25%
BATTERY VOLTAGE-SETTING ERRORMAX17005B toc06
VCTL (V)
BATTERY VOLTAGE ERROR (%)
SYSTEM LOAD TRANSIENT
MAX17005B toc07
200μs/div
SYSTEM
CURRENT
5A/div
CHARGING
CURRENT
5A/div
INDUCTOR
CURRENT
5A/div
EFFICIENCY
vs. CHARGE CURRENTMAX17005B toc08
CHARGE CURRENT (A)
EFFICIENCY (%)
2 CELLS3 CELLS
4 CELLS
VAA LOAD REGULATIONMAX17005B toc11
LOAD CURRENT (mA)
VOLTAGE (V)
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
LDO LOAD REGULATION
MAX17005B toc09
LDO CURRENT (mA)
LDO VOLTAGE (V)51015202530
LDO LINE REGULATION
MAX17005B toc10
INPUT VOLTAGE (V)
LDO VOLTAGE (V)22101214161820
VAA vs. TEMPERATURE
MAX17005B toc12
TEMPERATURE (°C)
(V)80-40-2002040
HIGH-SIDE MOSFET OFF-TIME AND
SWITCHING FREQUENCY vs. BATTERY VOLTAGE
MAX17005B toc13
BATTERY VOLTAGE (V)
SWITCHING FREQUENCY (MHz)
HIGH-SIDE MOSFET OFF-TIME (1410124682
VIN = 20V
HIGH-SIDE MOSFET OFF-TIME
SWITCHING FREQUENCY
ADAPTER REMOVALMAX17005B toc16
200ms/div
5.00V5.00V
5.00V
ADAPTER CURRENT
vs. ADAPTER VOLTAGEMAX17005B toc14
ADAPTER VOLTAGE (V)
ADAPTER CURRENT (mA)510
BATTERY LEAKAGE
MAX17005B toc15
BATTERY VOLTAGE (V)
BATTERY LEAKAGE CURRENT (161868241012
020
ypical Operating Characteristics (continued)(Circuit of Figure 1, adapter = 19V, battery = 10V, ISET = 1.05V, VCTL = AGND, TA= +25°C, unless otherwise noted.)
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers
Pin Description
PINNAMEFUNCTIONDCIN Charger Bias Supply Input. Bypass DCIN with a 1µF capacitor to PGND.
2 AGND Analog Ground CSIP Output Current-Sense Positive Input. Connect a current-sense resistor from CSIP to CSIN. CSIN Output Current-Sense Negative Input
5 IINP
Input Current-Monitor Output. IINP sources the current proportional to the current sensed across
CSSP and CSSN. The transconductance from (CSSP - CSSN) to IINP is 2.8µA/mV. See the Analog
Input Current-Monitor Output section to configure the current monitor for a particular gain setting.
6 BATT/FB Battery Voltage Feedback Input. For the MAX17015B, connect a resistor voltage-divider from the
battery output to FB (see Figure 1). ACOKAC Detect Output. This open-drain output is high impedance when ACIN is lower than VAA/2.
Connect a 10k pullup resistor from LDO to ACOK.CSSP Input Current Sense for Positive Input. Connect a current-sense resistor from CSSP to CSSN. CSSN Input Current-Sense Negative Input
10 ISET
Dual Mode™ Input for Setting Maximum Charge Current. ISET can be configured either with a
resistor voltage-divider or with a PWM signal from 128Hz to 500kHz. If there is no clock edge
within 20ms, ISET defaults to analog input mode. Pull ISET to AGND to shut down the charger. In
the MAX17015B, when the adapter is absent, drive ISET above 1V to enable IINP during battery
discharge. When the adapter is reinserted, ISET must be released to the correct control level within
300ms.
11 PGND Power Ground Connection for MOSFET Drivers
12 DLO Low-Side Power-MOSFET Driver Output. Connect to low-side n-channel MOSFET gate.
13 LDO Linear-Regulator Output. LDO provides the power to the MOSFET drivers. LDO is the output of the 5.4V
linear regulator supplied from DCIN. Bypass LDO with a 4.7µF ceramic capacitor from LDO to PGND.
14 BST High-Side Driver Supply. Connect a 0.68µF capacitor from BST to LX.
15 DHI High-Side Power-MOSFET Driver Output. Connect to high-side n-channel MOSFET gate.
16 LX High-Side Driver Source Connection. Connect a 0.68µF capacitor from BST to LX.
17 ACIN AC Adapter Detect Input. ACIN is the input to an uncommitted comparator.
18 VAA 4.2V Voltage Reference and Device Power-Supply Input. Bypass VAA with a 1µF capacitor to AGND.
19 CC Voltage Regulation Loop-Compensation Point. Connect a 0.01µF capacitor from CC to AGND.
20 VCTL Battery Voltage Adjust Input. VCTL sets the number of cells and adjusts the voltage per cell. The
adjustment range is 4.2V to 4.4V per cell. See the Setting Charge Voltage section.BP Backside Paddle. Connect the backside paddle to analog ground.
Dual Mode is a trademark of Maxim Integrated Products, Inc.
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance ChargersBATT
ADAPTER
BSTCSSPCSSN
DHI
DLO
PGND
RS1
15mΩ
CSIN
CSIP
BATT
BATTERY
VCTL
ISET
LDO
AGND
IINP
VAA
ADAPTER
PWM SIGNAL
22.6kΩ
0.68μF
0.1μF
0.01μF
200kΩ
200kΩ
CIN
COUT
RS2
10mΩ
Q1b
1μF
4.7μF
ONLY FOR MAX17015B
SYSTEM LOAD
1μF
CIN = 2 x 4.7μF
COUT = 4.7μF
L1 = 2μH
2MΩ
Q1a
DCIN
0.1μF
RACIN1
RACIN2
ACIN
ACOK
LDO10kΩ
MAX17005B
MAX17006B
MAX17015B
1kΩ
Figure 1. Typical Operating Circuit
Detailed DescriptionThe MAX17005B/MAX17006B/MAX17015B include all
the functions necessary to charge Li+, NiMH, and NiCd
batteries. An all n-channel synchronous-rectified step-
down DC-DC converter is used to implement a preci-
sion constant-current, constant-voltage charger. The
charge current and input current-limit sense amplifiers
have low-input offset errors (250µV typ), allowing the
use of small-value sense resistors.
The MAX17005B/MAX17006B/MAX17015B use a new
thermally optimized high-frequency architecture. With this
new architecture, the switching frequency is adjustedto
control the power dissipation in the high-side
MOSFET. Benefits of the new architecture include
reduced output capacitance and inductance, resulting in
smaller PCB area and lower cost.
MAX17005B/MAX17006B/MAX17015B
1.2MHz, Low-Cost,
High-Performance Chargers CSA
A = 17.5V/V
CSSN
CSSP
Gm =
2.8μA/mV
IINP
GMS
CSIN
CSIP
GMI
ISET
26mV
CHARGER
SHUTDOWN
CELL
SELECT
LOGIC
BATT
VAA
VCTL
GMV
LOWEST
VOLTAGE
CLAMP
CSI
60mV
PWM
FILTER
DHI
DLO
PGND
BST
LEVEL
SHIFTHIGH-SIDE
DRIVER
LOW-SIDE
DRIVER
CCMP
IMIN
IMAX
IZX
10mV
OVP
DC-DC
CONVERTER
110mV
10mV
BDIV
BDIV
VCTL + 100mV
5.4V LINEAR
REGULATOR
4.2V
REFERENCE
DCIN
LDO
VAA
POWER
FAIL
LDO
AGND
BATTVAA/2
ACOK
LDO
ACIN
MAX17005B
MAX17006B
MAX17015B
CSA
A = 17.5V/V
Figure 2. Functional Diagram
The MAX17005B/MAX17006B/MAX17015B feature a
voltage-regulation loop (CCV) and two current-regula-
tion loops (CCI and CCS). The loops operate indepen-
dently of each other. The CCV voltage-regulation loop
monitors BATT to ensure that its voltage never exceeds
the voltage set by VCTL. The CCI battery charge cur-
rent-regulation loop monitors current delivered to BATT
to ensure that it never exceeds the current limit set by
ISET. The charge current-regulation loop is in control as
long as the battery voltage is below the set point. When
the battery voltage reaches its set point, the voltage-
regulation loop takes control and maintains the battery
voltage at the set point. A third loop (CCS) takes control
and reduces the charge current when the adapter cur-
rent exceeds the input current limit.
The MAX17005B/MAX17006B/MAX17015B have single-
point compensation. The two current loops are internal-
ly compensated while the voltage loop is compensated
with a capacitor at CC pin. A functional diagram is
shown in Figure 2.
