| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
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1,000 pcs
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1000 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request |
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| Battery Chemistry | |
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The Texas Instruments BQ27621YZFT-G1A is a minimally configured microcontroller peripheral designed for system-side fuel gauging of single-cell Lithium-Ion batteries. This device simplifies firmware development and requires very little user configuration. It employs the Dynamic Voltage Correlation algorithm, eliminating the need for a sense resistor while accurately calculating remaining battery capacity, state of charge, battery voltage, and temperature.
Key features include an I2C communication interface supporting 400-kHz operation, configurable SOC interrupt or battery low digital output, and support for 4.2-V, 4.3-V, and 4.35-V chemistries. The operating temperature range is from -40°C to 85°C. The fuel gauge resides on the system board and supports both embedded and removable batteries, powered directly from the battery with an integrated LDO.
This IC is available in a compact 9-pin DSBGA package, measuring 1.62 x 1.58 mm with a 0.5 mm pitch. It automatically adjusts for self-discharge, temperature, and rate changes, providing a smoothed output for remaining capacity and state of charge. Connections are made directly to PACK+ and PACK- for battery circuit integration.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.04 | $1.04 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The BQ27621YZFT-G1A is available in a 9-DSBGA (9-UFBGA, DSBGA) surface mount package.
The operating temperature range is -40°C to 85°C.
It supports Lithium Ion (Li-Ion) battery chemistry.
It monitors a single cell (1 cell).
It uses the I2C communication interface.
The supported battery capacity range is 100 mAh to 32000 mAh.
No, it does not require an external sense resistor.