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DS2741

Maxim Integrated Products
Part Number DS2741
Manufacturer Maxim Integrated Products
Description Current Monitor and Accumulator
Published May 1, 2010
Detailed Description 19-4683; Rev 1; 7/09 www.DataSheet4U.com Current Monitor and Accumulator with Integrated Sense Resistor General Descri...
Datasheet PDF File DS2741 PDF File

DS2741
DS2741

Overview
19-4683; Rev 1; 7/09 www.
DataSheet4U.
com Current Monitor and Accumulator with Integrated Sense Resistor General Description The DS2741 current monitor/accumulator is a complete 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 component 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 ♦ Complete, 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.
247mAhr LSB ±8.
1Ahrs Full-Scale Range ♦ Industry-Standard I2C Interface with FactoryProgrammable 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) DS2741 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/RoHS-compliant 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+ DS2741 13 12 11 10 9 8 RSDC-DC CONVERTER 1.
8V Li + BATTERY VCC DS2741 EP* 2 3 4 5 6 7 SLP 0.
1μF GND SDA SCL 2.
2kΩ 2.
2kΩ MICROPROCESSOR 1 RS+ RS+ RS+ RS+ SDA SCL VCC + TDFN *EXPOSED PAD ________________________________________________________________ Maxim Integrated Products 1 For pricing, delivery, and ordering informatio...


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