Key facts
- Brand
- Texas Instruments
- Model
- BQ2057C
- Industry
- Industrial
- Documents
- 2
- Languages
- EN
- Last added
- 2012-07-03
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TEXAS INSTRUMENTS bq2057 bq2057C bq2057T bq2057W handbook
The bq2057 series advanced Lithium-ion (Li-ion) and Lithium-Polymer (Li-Pol) linear charge-management ICs are designed for cost-sensitive and compact portable electronics. They combine high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, charge termination, charge-status indication, and AutoComp charge-rate compensation in a single 8-pin IC. MSOP, TSSOP, and SOIC package options are offered to fit a wide range of end applications.
The bq2057 continuously measures battery temperature using an external thermistor. For safety, the bq2057 inhibits charge until the battery temperature is within user-defined thresholds. The bq2057 then charges the battery in three phases: conditioning, constant current, and constant voltage. If the battery voltage is below the low-voltage threshold, V(min), the bq2057 precharges using a low current to condition the battery.
Texas Instruments BQ2057C specifications
| Voltage regulation accuracy | Better than +1% |
|---|---|
| Dropout voltage | 0.3 V |
| Package options | 8-Pin SOIC, 8-Pin TSSOP, 8-Pin MSOP |
Source: TEXAS INSTRUMENTS bq2057 bq2057C bq2057T bq2057W handbook
All Texas Instruments BQ2057C documents by type
Ratings, dimensions and ordering codes, for selection and design work.
Questions answered in these manuals
What battery types is the bq2057 designed for?
It is ideal for Single (4.1 V or 4.2 V) and Dual-Cell (8.2 V or 8.4 V) Li-ion or Li-Pol Packs.
From: TEXAS INSTRUMENTS bq2057 bq2057C bq2057T bq2057W handbook
Does the bq2057 include temperature monitoring?
Yes, it includes optional cell-temperature monitoring before and during charge.
From: TEXAS INSTRUMENTS bq2057 bq2057C bq2057T bq2057W handbook
What is the dropout voltage of the bq2057?
The dropout voltage is 0.3 V, which helps minimize heat dissipation.
From: TEXAS INSTRUMENTS bq2057 bq2057C bq2057T bq2057W handbook
Which package types are available for the bq2057?
The device is offered in 8‑pin SOIC, 8‑pin TSSOP, and 8‑pin MSOP packages.
From: TEXAS INSTRUMENTS bq2057 bq2057C bq2057T bq2057W handbook