Simplified Block Diagram
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- Accurate Fuel Gauge Uses V-to-F Method
- 8-Bit RISC Core
- 12-Bit ADC
- Built-In Protection MOSFET Drivers
- SMBus v1.1 Compliant
The MAX1788 includes a 12-bit data-acquisition unit to measure individual cell voltages, thermistors, instantaneous current and pack voltage. Individual cell voltage measurements with 0.5% accuracy and overcurrent protection to provide first level protection. Internally adjustable over-current thresholds and delay timers provide a flexible solution.
The integrating fuel gauge module has a typical input offset of 1µV, and gain accuracy of better than 1% with no trimming required during pack manufacture. The MAX1788 has a wide 4V to 25V operating voltage range, and is available in a 28 pin TSSOP. The MAX1788 EvKit, development tools and reference design are available.