MAX1501ETE+T ,Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable ApplicationsFeatures The MAX1501 intelligent, constant-current, constant- ♦ Stand-Alone 1-Cell Li+ Charging, M ..
MAX15023ETG+ ,Wide 4.5V to 28V Input, Dual-Output Synchronous Buck ControllerFeatures● 5.5V to 28V or 5V ±10% Input Supply RangeThe MAX15023 dual, synchronous step-down control ..
MAX15023ETG+T ,Wide 4.5V to 28V Input, Dual-Output Synchronous Buck ControllerElectrical Characteristics(V = 12V, R = 33kΩ, C = 4.7µF, C = 1µF, T = -40°C to +85°C, unless otherw ..
MAX15024AATB+T ,Single/Dual, 16ns, High Sink/Source Current Gate DriversFeaturesThe MAX15024/MAX15025 single/dual, high-speed♦ 8A Peak Sink Current/4A Peak Source CurrentM ..
MAX15025AATB+ ,Single/Dual, 16ns, High Sink/Source Current Gate DriversELECTRICAL CHARACTERISTICS(V = V = V = 10V, FB/SET = GND, T = T = -40°C to +125°C, unless otherwise ..
MAX15025AATB+T ,Single/Dual, 16ns, High Sink/Source Current Gate DriversBlock Diagrams appear at end of data sheet.For pricing, delivery, and ordering information, please ..
MAX4129ESD ,Quad, wide-bandwidth, low-power, single-supply Rail-to-Rail I/O op amp. BW 5MHz.ELECTRICAL CHARACTERISTICS (continued)(V = +2.7V to +6.5V, V = 0V, V = 0V, V = V /2, R tied to V /2 ..
MAX4129ESD+ ,Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op AmpsMAX4122–MAX412919-1087; Rev 1; 8/97Single/Dual/Quad, Wide-Bandw idth, Low -Pow er,Single-Supply Rai ..
MAX4129ESD+T ,Single/Dual/Quad, Wide-Bandwidth, Low-Power, Single-Supply Rail-to-Rail I/O Op AmpsFeaturesThe MAX4122–MAX4129 family of operational amplifiers♦ 5-Pin SOT23 Package (MAX4122/4)combin ..
MAX412BCSA ,Single/Dual/Quad, 28MHz, Low-Noise, Low-Voltage, Precision Op AmpsFeatures
The MAX410/MAX412/MAX414 single/dual/quad op
amps set a new standard for noise perform ..
MAX412BESA ,Single/Dual/Quad, 28MHz, Low-Noise, Low-Voltage, Precision Op Ampsapplications, ¥he PART TEMP.RANGE P'N'PACKAGE
MAX410/MAX412/MAX414 are available in DIP and so MAX ..
MAX412CPA ,Single/Dual/Quad, 28MHz, Low-Noise, Low-Voltage, Precision Op AmpsELECTRICAL CHARACTERISTICS
(V+ = 5V, V- = -5V, TA = 0°C to +70°C, unless otherwise noted.)
PARA ..
MAX1501ETE+T
Highly Integrated, Linear Battery Charger with Thermal Regulation for Portable Applications
MAX1501
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
General DescriptionThe MAX1501 intelligent, constant-current, constant-
voltage (CCCV), temperature-regulated battery charger
charges a single lithium-ion (Li+) cell or three-cell
NiMH/NiCd batteries. The device integrates the current-
sense resistor, PMOS pass element, and thermal-
regulation circuitry, while eliminating the reverse-
blocking Schottky diode to create the simplest charging
solution for hand-held equipment.
For single-cell Li+ batteries, the MAX1501 functions as a
stand-alone charger to control the charging sequence
from the prequalification state through fast charge, top-
off, and charge termination. With 3-cell NiMH/NiCd
batteries, the MAX1501 requires collaboration with a
microcontroller to determine the best charging algorithm.
Proprietary thermal-regulation circuitry limits the die tem-
perature when fast charging or while exposed to high
ambient temperatures, allowing maximum charging cur-
rent without damaging the charger. The MAX1501 con-
tinually supplies a regulated output voltage under
no-battery conditions, allowing battery changing without
interrupting system power.
The device achieves high flexibility by providing an
adjustable fast-charge current, top-off current, safety
timer (disabled in the MAX1501Z), and thermal-regula-
tion setpoint. Other features include input power detec-
tion (ACOK) and input under-/overvoltage protection.
The MAX1501 provides active-low control inputs.
The MAX1501 accepts a 4.5V to 13V supply, but
disables charging when the input voltage exceeds
6.5V, preventing excessive power dissipation. The
MAX1501 operates over the extended temperature
range (-40°C to +85°C) and is available in a compact
16-pin thermally enhanced 5mm x 5mm thin QFN
package with 0.8mm profile.
ApplicationsCellular and Cordless Phones
PDAs
Digital Cameras and MP3 Players
USB Appliances
Charging Cradles and Docks
Bluetooth™ Equipment
Features Stand-Alone 1-Cell Li+ Charging, Microprocessor-
Controlled 3-Cell NiMH/NiCd ChargingNo FET, Reverse-Blocking Diode, or Current-
Sense Resistor Required1.4A (max) Programmable Fast-Charge Current+95°C, +115°C, and +135°C Proprietary
Programmable Die Temperature Regulation
Control4.5V to 13V Input Voltage Range with Input
Overvoltage (OVLO) Protection Above 6.5VProgrammable Top-Off Current Threshold: 10%,
20%, or 30% of the Fast-Charge CurrentCharge-Current Monitor for Fuel GaugingProgrammable Safety Timer (3, 4.5, or 6 hours)Input Power Detection Output (ACOK) and Charge
Enable Input (CHGEN)Automatic RechargeDigital Soft-Start Limits Inrush CurrentCharge Status Outputs for LEDs or µP Interface
Ordering Information
PARTTEMP RANGEPIN-PACKAGEMAX1501ETE-40°C to +85°C16 Thin QFN
MAX1501ZETE-40°C to +85°C16 Thin QFN
Pin Configuration appears at end of data sheet.MAX1501/MAX1501Z
1µF
INPUT
4.5V TO 13V
2.8kΩ
INP
TEMP
TMAX/I.C.
SETI
GND
GLED
RLED
10µF
4.2V 1-CELL Li+
RPULLUP
VLOGIC
(≤ 5.5V)
BATT
FULLI
SELV
MODE
CHGEN
ACOK
Typical Operating CircuitBluetooth is a trademark of Ericsson.
MAX1501
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS(VIN= VINP= 5V, VBATT= 3.5V, ACOK= GLED= RLED= TEMP = TMAX/I.C. = FULLI = open, CHGEN= MODE= GND, RSETI= 2.8kΩ,
CIN= 1µF, CBATT= 10µF, 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.
IN, INP, RLED, GLEDto GND................................-0.3V to +14V
IN to INP................................................................-0.3V to +0.3V
VL, BATT, SETI, ACOK, MODE, CHGEN, SELV,
FULLI, TMAX/I.C., TEMP to GND.........................-0.3V to +6V
VL to IN...................................................................-14V to +0.3V
Continuous Power Dissipation (TA= +70°C)
16-Pin 5mm ✕5mm Thin QFN
(derate 21.3mW/°C above +70°C).............................1702mW
Operating Temperature Range...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
PARAMETERCONDITIONSMINTYPMAXUNITSIN, INP Input Voltage013V
IN, INP Input Operating Range4.506.25V
VL Output Voltage4.5V ≤ VIN ≤ 6.25V, IVL < 250µA2.733.3V
VIN - VBATT, rising4070100
VIN - VBATT, falling305585ACOK Trip Point
VIN - VBATT, hysteresis15
ACOK Sink Current4.5V ≤ VIN ≤ 6.25V, V ACOK = 0.6V75µA
VIN rising4.054.1254.20
VIN falling3.94.0254.1VUndervoltage Lockout Trip Point
Hysteresis100mV
Overvoltage Lockout Trip PointVIN rising6.256.506.75V
Li+, NiMH/NiCd, and no-battery modes58
Disable mode1.53IN Input Current
Off mode (VIN = 4V)0.25
VBATT = 4.3V4580
VIN = 0310BATT Input Current
Disable mode26
Leakage into BatteryVIN = VINP = 13V, VBATT = 0Disable mode5µA
RMS Charge Current1.4A
SELV = VL4.1664.24.234Li+ modeSELV = GND4.0674.14.133
SELV = VL,
VIN = VINP = 6V4.854.955.05Battery Regulation Voltage
NiMH/NiCd mode
SELV = GND4.44.54.6
Output Regulation VoltageNo-battery mode3.7004.04.234V
BATT Precharge Threshold
VoltageBATT rising2.6752.82.925V
RSETI = 2.8kΩ460500540Fast-Charge Current-Loop
System AccuracyRSETI = 1.75 kΩ736800864mA
MAX1501
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
ELECTRICAL CHARACTERISTICS (continued)(VIN= VINP= 5V, VBATT= 3.5V, ACOK= GLED= RLED= TEMP = TMAX/I.C. = FULLI = open, CHGEN= MODE= GND, RSETI= 2.8kΩ,
CIN= 1µF, CBATT= 10µF, TA
= 0°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.)
PARAMETERCONDITIONSMINTYPMAXUNITSPrecharge Current System
Accuracy% of fast-charge current, VBATT = 2V51015%
TEMP = GND95
TEMP = open115Die Temperature Regulation
Setpoint (Note 1)
TEMP = VL135C
IBATT to ISETI, precharge mode, VBATT = 2V0.7011.30Current-Sense Amplifier GainIBATT to ISETI, fast-charge mode0.9511.05mA/A
Internal Current-Sense
Resistance84mΩ
Regulator Dropout VoltageVIN - VBATT, NiMH/NiCd mode, VBATT = 4.3V,
IBATT = 425mA190350mV
Logic Input Low VoltageCHGEN, MODE, 4.5V ≤ VIN ≤ 6.25V0.52V
Logic Input High VoltageCHGEN, MODE, 4.5V ≤ VIN ≤ 6.25V1.25V
Internal Pulldown ResistanceCHGEN, MODE100175400kΩ
Internal Pullup ResistanceSELV100175400kΩ
Internal Bias ResistanceFULLI, TEMP, TMAX5090200kΩ
Internal Bias VoltageFULLI, TEMP, TMAXVVL/2V
RLED Output Low CurrentV RLED = 1V71018mA
GLED Output Low CurrentV GLED = 1V142034mA
GLED, RLED Output High
Leakage CurrentV GLED = V RLED = VIN = VINP = 13V0.11µA
FULLI = GND51015
FULLI = VL152025Full-Battery Detection Current
Threshold
% of fast-charge
current
FULLI = open253035
SELV = VL3.94.04.1Li+ modeSELV = GND3.83.94.0VBATT Restart Threshold
NiMH/NiCd mode3.94.04.1
Charge-Timer Accuracy-10+10%
TMAX = GND3
TMAX = open4.5Charge-Timer Duration
(MAX1501 Only)TMAX = VL6
hrs
MAX1501
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
ELECTRICAL CHARACTERISTICS(VIN= VINP= 5V, VBATT= 3.5V, ACOK= GLED= RLED= TEMP = TMAX/I.C. = FULLI = open, CHGEN= MODE= GND, RSETI= 2.8kΩ,
CIN= 1µF, CBATT= 10µF, TA
= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)
PARAMETERCONDITIONSMINTYPMAXUNITSIN, INP Input Voltage013V
IN, INP Input Operating Range4.506.25V
VL Output Voltage4.5V ≤ VIN ≤ 6.25V, IVL < 250µA2.73.3V
VIN - VBATT, rising40100ACOK Trip PointVIN - VBATT, falling3085mV
ACOK Sink Current4.5V ≤ VIN ≤ 6.25V, V ACOK = 0.6V75µA
VIN rising4.004.25Undervoltage Lockout Trip PointVIN falling3.904.15V
Overvoltage Lockout Trip Point6.256.75V
Li+, NiMH/NiCd, and no-battery modes8IN Input CurrentDisable mode3mA
VBATT = 4.3V80
VIN = 010BATT Input Current
Disable mode6
Leakage into BatteryVIN = VINP = 13V, VBATT = 0Disable mode5µA
RMS Charge Current1.4A
SELV = VL4.1484.252Li+ modeSELV = GND4.054.15
SELV = VL4.855.05Battery Regulation Voltage
NiMH/NiCd modeSELV = GND4.44.6
Output Regulation VoltageNo-battery mode3.7004.234V
BATT Precharge Threshold
VoltageBATT rising2.6752.925V
RSETI = 2.8kΩ460540Fast-Charge Current-Loop
System AccuracyRSETI = 1.75kΩ736864mA
Precharge Current System
Accuracy% of fast-charge current, VBATT = 2V515%
IBATT to ISETI, precharge mode, VBATT = 2V0.601.40Current-Sense Amplifier GainIBATT to ISETI, fast-charge mode0.931.07mA/A
Regulator Dropout VoltageVIN - VBATT, NiMH/NiCd mode, VBATT = 4.3V,
IBATT = 425mA350mV
Logic Input Low VoltageCHGEN, MODE, 4.5V < VIN < 6.25V0.52V
Logic Input High VoltageCHGEN, MODE, 4.5V < VIN < 6.25V1.3V
Internal Pulldown ResistanceCHGEN, MODE100400kΩ
Internal Pullup ResistanceSELV100400kΩ
Internal Bias ResistanceFULLI, TEMP, TMAX50200kΩ
MAX1501
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
Note 1:Temperature regulation setpoint variation is typically ±9°C.
Note 2:Specifications to TA= -40°C are guaranteed by design, not production tested.
ELECTRICAL CHARACTERISTICS (continued)(VIN= VINP= 5V, VBATT= 3.5V, ACOK= GLED= RLED= TEMP = TMAX/I.C. = FULLI = open, CHGEN= MODE= GND, RSETI= 2.8kΩ,
CIN= 1µF, CBATT= 10µF, TA
= -40°C to +85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 2)
PARAMETERCONDITIONSMINTYPMAXUNITSRLED Output Low CurrentV RLED = 1V718mA
GLED Output Low CurrentV GLED = 1V1434mA
GLED, RLED Output High
Leakage CurrentV GLED = V RLED = VIN = VINP = 13V1µA
Charge-Timer Accuracy
(MAX1501 Only)-10+10%
Typical Operating Characteristics(VIN= VINP= 5V, ACOK= RLED= GLED= TEMP = TMAX/I.C. = FULLI = open, CBATT= 10µF, CIN= 1µF, TA= +25°C, unless
otherwise noted.)
SUPPLY CURRENT vs. INPUT VOLTAGEMAX1501 toc01
INPUT VOLTAGE (V)
SUPPLY CURRENT (mA)1191034567812
Li+ MODE OR
NiMH/NiCd MODE,
SELV = VL, IBATT = 0
DISABLE-MODE SUPPLY CURRENT
vs. INPUT VOLTAGEMAX1501 toc02
INPUT VOLTAGE (V)
DISABLE-MODE SUPPLY CURRENT (mA)1191034567812
CHARGE CURRENT
vs. BATTERY VOLTAGE
MAX1501 toc03
BATTERY VOLTAGE (V)
CHARGE CURRENT (mA)
Li+ MODE, RSETI = 2.7kΩ,
VIN = 5V, SELV = VL
CHARGE CURRENT
vs. BATTERY VOLTAGEMAX1501 toc04
BATTERY VOLTAGE (V)
CHARGE CURRENT (mA)
NiMH/NiCd, RSETI = 2.7kΩ,
VIN = 5.5V, SELV = VL
CHARGE CURRENT
vs. INPUT VOLTAGEMAX1501 toc05
INPUT VOLTAGE (V)
CHARGE CURRENT (mA)1191034567812
Li+ MODE,
SELV = VL,
RSETI = 2.7kΩ
CHARGE CURRENT
vs. INPUT-VOLTAGE HEADROOMMAX1501 toc06
VIN - VBATT (V)
CHARGE CURRENT (mA)
NiMH/NiCd MODE, SELV = GND,
RSETI = 2.7kΩ, VBATT = 4.3V
MAX1501
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applicationsypical Operating Characteristics (continued)(VIN= VINP= 5V, ACOK= RLED= GLED= TEMP = TMAX/I.C. = FULLI = open, CBATT= 10µF, CIN= 1µF, TA= +25°C, unless
otherwise noted.)
OUTPUT VOLTAGE vs. INPUT VOLTAGEMAX1501 toc07
INPUT VOLTAGE (V)
OUTPUT VOLTAGE (V)1112356789410
NO BATTERY MODE
IBATT = 0
BATTERY REGULATION VOLTAGE
vs. TEMPERATURE
MAX1501 toc08
TEMPERATURE (°C)
BATTERY REGULATION VOLTAGE (V)
Li+ MODE
SELV = VL
SELV = GND
CHARGE CURRENT
vs. AMBIENT TEMPERATUREMAX1501 toc09
AMBIENT TEMPERATURE (°C)
CHARGE CURRENT (mA)3510-15
Li+ MODE, TEMP = VL,
VBATT = 3.6V, VIN = 5V,
RSETI = 2.7kΩ
CHARGE CURRENT
vs. AMBIENT TEMPERATUREMAX1501 toc10
AMBIENT TEMPERATURE (°C)
CHARGE CURRENT (mA)3510-15
Li+ MODE, TEMP = VL,
VBATT = 3.6V,
VIN = 6V, RSETI = 1.75kΩ
MAX1501
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable Applications
Pin Description
PINNAMEFUNCTIONINPHigh-Current Charger Input. Connect an AC adapter to INP and IN as close to the device as possible.
INP provides charge current to the battery. INP draws current while the device is in shutdown mode.
2IN
Low-Current Charger Input. Bypass IN to GND with a 1µF ceramic capacitor. Connect IN to INP as close
to the device as possible. IN powers the internal LDO and reference. IN draws current while the device is
in shutdown mode.
3, 13GNDGround. Connect the exposed paddle to GND.SETICurrent-Sense Transconductance Amplifier Output. Connect a resistor from SETI to GND to program the
maximum charge current and to monitor the actual charge current. SETI pulls to GND during shutdown.
5VLLinear Regulator Output. Connect CHGEN, TEMP, TMAX, FULLI, and MODE to VL to program logic high.
VL discharges to GND during shutdown.
TMAX
Maximum Charging-Time Select Input (MAX1501 Only). TMAX sets the maximum charging time. Connect
TMAX to GND to set the maximum charging time to 3 hours. Leave TMAX floating to set the maximum
charging time to 4.5 hours. Connect TMAX to VL to set the maximum charging time to 6 hours. TMAX
pulls to GND through a 50kΩ resistor in shutdown.
I.C.Internally Connected in the MAX1501Z. Leave floating.FULLI
Top-Off-Current Select Input. FULLI sets the end-of-charge threshold as a percentage of the fast-charge
current. Connect FULLI to GND to set the end-of-charge threshold to 10% of the fast-charge current.
Connect FULLI to VL to set the end-of-charge threshold to 20% of the fast-charge current. Leave FULLI
floating to set the end-of-charge threshold to 30% of the fast-charge current. FULLI pulls to GND through
a 50kΩ resistor in shutdown.TEMP
Die Temperature Select Input. TEMP sets the die temperature regulation point for the thermal-control
loop. Connect TEMP to GND to regulate the die temperature at +95°C. Leave TEMP floating to regulate
the die temperature at +115°C. Connect TEMP to VL to regulate the die temperature at +135°C. TEMP
pulls to GND through a 50kΩ resistor in shutdown.MODEMode Select Input. MODE and CHGEN together control charging functions (Table 1). An internal 175kΩ
pulldown resistor pulls MODE low.CHGENCharge Enable Input. CHGEN and MODE together control charging functions (Table 1). An internal
175kΩ pulldown resistor pulls CHGEN low.ACOKInput Voltage Range Indicator. The open-drain ACOK output asserts low when 4.2V ≤ VIN ≤ 6.25V and
VIN - VBATT ≥ 100mV. ACOK requires an external 100kΩ pullup resistor. ACOK floats in shutdown.BATTBattery Connection. Connect the positive terminal of the battery to BATT. BATT draws less than 5µA
during shutdown.SELV
Battery Voltage Selection Input. SELV sets the battery regulation voltage in Li+ and NiMH/NiCd modes
(Table 2). For no-battery mode, the battery voltage defaults to 4.0V. An internal 175kΩ resistor to VL pulls
SELV high.RLED
Battery Charging Indicator. Connect the anode of a red LED to IN and the cathode to RLED. RLED
asserts low when the input supply is present and the battery is charging, regardless of cell chemistry.
RLED sinks 10mA. RLED goes high impedance in shutdown. Connect a pullup resistor to the µP’s I/O
supply when interfacing with a µP logic input.GLED
Full-Charge Indicator. Connect the anode of a green LED to IN and the cathode to GLED. GLED asserts
low when the input supply is present and the battery has reached the top-off current threshold set by
FULLI, regardless of cell chemistry. GLED sinks 20mA. GLED goes high impedance in shutdown.
Connect a pullup resistor to the µP’s I/O supply when interfacing with a µP logic input.
MAX1501
Highly Integrated, Linear Battery Charger with
Thermal Regulation for Portable ApplicationsMAX1501/MAX1501Z
OUTPUT DRIVER
AND LOGIC
UVLO
REF
OVLO
LOGIC
TEMPERATURE
SENSOR
VREF
TEMP REF
IREF
SHUTDOWN
INP
SETI
ACOK
BATT
SELV
TEMP
FULLI
TMAX/I.C.OSC
GNDGND
CHGEN
MODE
GLED
RLED
Figure 1. Functional Diagram
