DS2788 Description
The DS2788 measures voltage, temperature, and current, and estimates available capacity for rechargeable lithium-ion (Li+) and Li+ polymer batteries. Cell characteristics and application parameters used in the calculations are stored in on-chip EEPROM. The available capacity registers report a conservative estimate of the amount of charge that can be removed given the current temperature, discharge rate, stored...
DS2788 Key Features
- Five 30mA Open-Drain Drivers for Driving LED Fuel-Gauge Display
- Debounced Fuel-Gauge Display Enable
- Internal Voltage Measurement Gain Register for Trimming External Voltage-Divider
- Pin for Driving FETs to Enable Voltage-Divider Only During Voltage Measurement, Conserving Power
- Precision Voltage, Temperature, and Current Measurement System
- Accurate, Temperature-Stable, Internal Time Base
- Absolute and Relative Capacity Estimated from Coulomb Count, Discharge Rate, Temperature, and Battery Cell Characteristi
- Accurate Warning of Low Battery Conditions
- Automatic Backup of Coulomb Count and Age Estimation to Nonvolatile (NV) EEPROM
- Gain and Tempco Calibration Allows the Use of Low-Cost Sense Resistors