DS2741

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-compli...