Purchase MAX1925, In-stock MAX1925 From SeekIC.
Part Number: MAX1925
Description: The MAX1925/MAX1926 single-cell lithium-ion (Li+) switch-mode battery chargers use an external PMOS pa...
- Table of contents:
MAX1925
-
Suppliers
DataSheet
General Description
MAX1925 General Description
The MAX1925/MAX1926 single-cell lithium-ion (Li+) switch-mode battery chargers use an external PMOS pass element step-down configuration. Charge current is programmable, and an external capacitor sets the maximum charge time.
Additional features include automatic input power detection (ACON output), logic-controlled enable, and temperature monitoring with an external thermistor. The MAX1925 disables charging for inputs greater than 6.1V, while the MAX1926 charges for inputs between 4.25V and 12V.
The MAX1925/MAX1926 feature two precondition levels to restore near-dead cells. The devices source 4mA to a cell that is below 2V while sourcing C/10 to a cell between 2V and 3V. Full charge current is then applied above 3V. A CHG output drives an LED to indicate charging (LED on) and fault conditions (LED blinking).
The MAX1925/MAX1926 are available in a 12-pin 4mm ✕ 4mm thin QFN package and are specified over the extended temperature range (-40°C to +85°C). An
evaluation kit is available to speed design.
MAX1925 Maximum Ratings
IN, INP, ACON to GND...........................................-0.3V to +14V
CHG, EXT to PGND ...................................-0.3V to (VINP + 0.3V)
CS, BATT, EN, THRM to GND ..................................-0.3V to +6V
CT to GND................................................................-0.3V to +4V
EN, THRM, CT to IN................................................-14V to +0.3V
INP to IN ..............................................................-0.3V to +0.3V
PGND to GND .......................................................-0.3V to +0.3V
CS to BATT............................................................-0.3V to +0.3V
EXT Continuous RMS Current.........................................±100mA
Continuous Power Dissipation (TA = +70°C)
Exposed Paddle Soldered to Board
(derate 16.9mW/°C above +70°C).............................1349mW
Exposed Paddle Unsoldered
(derate 9mW/°C above +70°C)....................................721mW
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
CHG, EXT to PGND ...................................-0.3V to (VINP + 0.3V)
CS, BATT, EN, THRM to GND ..................................-0.3V to +6V
CT to GND................................................................-0.3V to +4V
EN, THRM, CT to IN................................................-14V to +0.3V
INP to IN ..............................................................-0.3V to +0.3V
PGND to GND .......................................................-0.3V to +0.3V
CS to BATT............................................................-0.3V to +0.3V
EXT Continuous RMS Current.........................................±100mA
Continuous Power Dissipation (TA = +70°C)
Exposed Paddle Soldered to Board
(derate 16.9mW/°C above +70°C).............................1349mW
Exposed Paddle Unsoldered
(derate 9mW/°C above +70°C)....................................721mW
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
MAX1925 Features
Small (4mm ✕ 4mm) Package
4.25V to 12V Input Range (MAX1926)
Overvoltage Lockout at 6.1V (MAX1925)
±0.75% Battery Regulation Voltage
Set Charge Current with One Resistor
Automatic Input Power Sense
LED (or Logic-Out) Charge Status and Fault Indicator
Programmable Safety Timer
Autorestart at Cell = 4V
Thermistor Monitor Input
4.25V to 12V Input Range (MAX1926)
Overvoltage Lockout at 6.1V (MAX1925)
±0.75% Battery Regulation Voltage
Set Charge Current with One Resistor
Automatic Input Power Sense
LED (or Logic-Out) Charge Status and Fault Indicator
Programmable Safety Timer
Autorestart at Cell = 4V
Thermistor Monitor Input
MAX1925 Typical Application
Digital Cameras
Self-Charging Battery Packs
PDAs
Cradle Chargers
Self-Charging Battery Packs
PDAs
Cradle Chargers
MAX1925 Connection Diagram
MAX1925
PDF/DataSheet Download
- Datasheet: MAX1925
- File Size: 372316 KB
- Manufacturer: MAXIM [Maxim Integrated Products]
- Click here to Download
- ·MAX002
- FILTRONIC [Filtronic Compound Semiconductors]
- Optical Communications - Modulator Driver Amplifier
- 42133 KB
- ·MAX038
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038C/D
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038CPP
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038CWP
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038EPP
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
- ·MAX038EVKIT
- Maxim
- Evaluation Kit for the MAX038
- 106491 KB
- ·MAX038EWP
- MAXIM [Maxim Integrated Products]
- High-Frequency Waveform Generator
- 207992 KB
MAX1925 Relative Products
MAX1924
The MAX1894/MAX1924 are lithium-ion/lithium-polymer (Li+) battery-pack protector ICs for 3- or 4-series Li+ battery packs. The MAX1894/MAX1924 enhance the useful operating life of Li+ batteries by monitoring individual cell voltages and preventing over/under...
MAX1922ETB+TC3B
IC SWITCH CURRENT-LIMIT 10-TDFN
MAX1922ETB+T
IC SW CURRENT LIMIT USB 10TDFN
MAX1922ETB+
IC CURR-LMT SW 1A 2-USB 10-TDFN
MAX1922ESA+T
IC SW CUR LIMIT USB 8-SOIC
MAX1922ESA+C71073
IC SWITCH CURRENT-LIMIT 8-SOIC
Hotspot Suppliers Product
MPC8315EVRAFDA
Price: 21-26 USD
PowerQUICC II Pro Processor, 620-PBGA, –0.3 to 1.26V, MPC8315EVRAFDA
STK496-090
Price: 4-7 USD
ZIP15, STK496-090, Integrated Circuits (ICs), Sanyo Semicon Device
ATTINY2313V-10
Price: 0.1-100 USD
8-bit Microcontroller, 2K Bytes, In-System Programmable Flash, SOIC20, Fully Static Operation
AD536AJH
Price: 1-10 USD
RMS-to-DC Converter, 60 dB Range, 1.2 mA
TL494ID
Price: 0.13-0.17 USD
IC PWM CONTROLLER 16-SOIC - TL494ID
SC06801518
Price: 1.5-2 USD
MIS chip capacitor, SMD, 26 GHz, Wide temperature operation, High reliability
29EE010-90-4C-NH
Price: 1.27-1.55 USD
1 Mbit (128K x8) Page-Write EEPROM 29EE010-90-4C-NH
USB2512AEZG
Price: 1.7-2.1 USD
1 hub controller IC, 36-QFN, 3 V ~ 3.6 V, 95mA, USB2512AEZG, SMSC
BISS0001
Price: 1-10 USD
BISS0001, CMOS, STMicroelectronics, PIR motion sensor, surface mount
SGA-6486
Price: 0.8-4 USD
high performance, SiGe HBT MMIC Amplifier, SOT86, 7 V, High Gain, 150 mA, Single Supply
CL21A106KAYNNNE
Price: 0.015-0.05 USD
multi-layer ceramic capacitor, 10μF, Pb free, 25V, Samsung semiconductor
CY2292SL-1H6T
Price: 3.99-4.8 USD
Three-PLL, EPROM, Clock Generator
