DS2741
DS2741 is Current Monitor and Accumulator manufactured by Maxim Integrated.
Description
The DS2741 current monitor/accumulator is a plete current-sensing, measuring, and accumulation device tailored for cost-sensitive, battery-powered applications in a small 3mm x 3mm TDFN package. As a result, the DS2741 is a key ponent in battery-charge control and remaining capacity-estimation applications. Through its I2C interface, the DS2741 gives the host system access to current measurement and accumulation registers. The 7-bit slave address is factory programmable, allowing up to 128 devices to be individually addressed by the host system.
Features
- plete, Low-Cost, Integrated Current-Sensing and Accumulation Solution with Serial Digital Output
- On-Board 38mΩ Sense Resistor
- Current Measurement: Signed 10-Bit Bidirectional Measurement ±2.5A Dynamic Range 1% Error at +25°C 2% Error Over Temperature
- Current Accumulation: 0.247m Ahr LSB ±8.1Ahrs Full-Scale Range
- Industry-Standard I2C Interface with Factory Programmable Slave Address
- 2.5V to 4.5V Single-Supply Operation
- Low-Power Consumption: Active Current: 60µA (typ) Sleep Current: 1µA (typ)
- -20°C to +70°C Operating Range
- 14-Pin TDFN (3mm x 3mm x 0.8mm)
Applications
Cell Phones PDAs Battery Monitor/Rechargers
Ordering Information
PART DS2741N+ DS2741N+T TEMP RANGE -20°C to +70°C -20°C to +70°C PIN-PACKAGE 14 TDFN-EP- 14 TDFN-EP-
+Denotes a lead(Pb)-free/Ro HS-pliant package. T = Tape and reel.
- EP = Exposed pad.
Typical Operating Circuit
TOP VIEW
Pin Configuration
RS- RS- RS- RS- SLP GND DNC
CHARGER/ LOAD
14 RS+
RSDC-DC CONVERTER 1.8V Li + BATTERY
EP- 2 3 4 5 6 7
SLP 0.1μF GND SDA SCL
2.2kΩ
2.2kΩ MICROPROCESSOR
RS+ RS+ RS+ RS+ SDA SCL VCC
+
TDFN
- EXPOSED PAD
________________________________________________________________ Maxim Integrated Products
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim’s website at .maxim-ic..
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Current Monitor and...
