Packaging information
| Package | Pins DSBGA (YZF) | 9 |
| Operating temperature range (°C) -40 to 85 |
| Package qty | Carrier 3,000 | LARGE T&R |
Features for the BQ27621-G1
- Single-Cell Li-Ion Battery Fuel Gauge
- Resides on System Board
- Supports Embedded or Removable Batteries
- Powered Directly from Battery with Integrated
LDO
- Easy To Configure Fuel Gauging Based on the
Dynamic Voltage Correlation Algorithm- Reports Remaining Capacity and State of
Charge (SOC) with Smoothing Filter - Automatically Adjusts for Self-Discharge,
Temperature, and Rate Changes
- Reports Remaining Capacity and State of
- Microcontroller Peripheral Supports:
- 400-kHz I2C Serial Interface
- Configurable SOC Interrupt or
Battery Low Digital Output Warning - Internal Temperature Sensor or
Host Reported Temperature
- Support 4.2-V, 4.3-V, and 4.35-V Chemistries
- 9-pin 1.62 × 1.58 mm, 0.5 mm pitch YZF package
Description for the BQ27621-G1
The Texas Instruments bq27621-G1 is a minimally configured microcontroller peripheral that provides system-side fuel gauging for single-cell Li-Ion batteries. The device requires very little user configuration and system microcontroller firmware development.
The bq27621-G1 uses the Dynamic Voltage Correlation algorithm for fuel gauging. This process eliminates the need for a sense resistor when calculating remaining battery capacity (mAh), state-of-charge (%), battery voltage (mV), and temperature (°C).
Battery fuel gauging with the bq27621-G1 requires connections only to PACK+ (P+) and PACK– (P–) for a removable battery pack or embedded battery circuit. The tiny 9-pin, 1.62 mm × 1.58 mm, 0.5 mm pitch YZF package is ideal for space-constrained applications.