The DS2751E multichemistry battery fuel gauge is a data-acquisition and information-storage device tailored for cost-sensitive and space-constrained 1-cell Li+/polymer or 3-cell Ni battery-pack applications. The DS2751E provides the key hardware components required to accurately estimate remaining capacity by integrating low-power, precision measurements of temperature, voltage, current, and current accumulation, as well as nonvolatile (NV) data storage, into the small footprint of a 3.0mm x 4.4mm 8-pin TSSOP package.
Feature
■ Available in Two Configurations
- Internal 25mΩ Sense Resistor
- External User-Selectable Sense Resistor
■ Current Measurement
- 12-Bit Bidirectional Measurement
- Internal Sense Resistor Configuration: 0.625mA LSB and ±1.9A Dynamic Range
- External Sense Resistor Configuration: 15.625V LSB and ±64mV Dynamic Range
■ Current Accumulation
- Internal Sense Resistor: 0.25mAhr LSB
- External Sense Resistor: 6.25μVhr LSB
■ Voltage Measurement with 4.88mV Resolution
■ Temperature Measurement Using Integrated Sensor with 0.125°C Resolution
■ 32 Bytes of Lockable EEPROM
■ 16 Bytes of General-Purpose SRAM
■ Dallas 1-Wire® Interface with Unique 64-Bit Device Address
■ Supports 1-Cell Li+/Polymer or 3-Cell Ni Battery Packs
■ 3mm Dimension of 8-Pin TSSOP Package Allows Mounting on Side of Thin Li+ and Li+/Polymer Cells (Lead Free available)
■ Low Power Consumption:
- Active Current: 60μA (typ), 90μA (max)
- Sleep Current: 1μA (typ), 2μA (max)
