bq2050 Lithium Ion Power Gauge™ IC is intended for battery-pack or in-system installation to maintain an accurate record of available battery capacity.
The bq2050 is an integrated circuit designed to maintain an accurate record of available battery capacity in lithium-ion rechargeable batteries. It monitors voltage drops across a sense resistor and compensates for temperature and charge/discharge rates to provide precise capacity information.
The device supports various output methods, including direct drive of LEDs via a five-segment display or single-wire serial communication with an external processor. Internal registers track available capacity, temperature, energy, battery status, and allow for programming settings.
| Typical Operating Current | 120A |
|---|---|
| Package Type | 16-pin narrow SOIC |
| Supply Voltage Range | 3.0-6.5V |
| Temperature Measurement Range | -35°C to +85°C |
| End-of-Discharge Voltage Thresholds (Default) | 1.52V and 1.47V |
The default values for the two programmable EDV thresholds are 1.52V (early warning) and 1.47V (empty).
It can be reset by removing Vcc and grounding the RBI pin for 15 seconds, or by writing 0x80 to register 0x39.