The BENCHMARQ 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 to improve performance, lower cost and enable smaller size.
The bq2057 series are advanced linear charge‑management ICs for single‑ and dual‑cell Li‑ion or Li‑Polymer packs. They integrate voltage and current regulation, battery conditioning, temperature monitoring, charge‑status indication and AutoComp dynamic compensation in an 8‑pin package.
The document provides detailed electrical characteristics, absolute maximum ratings, package options, terminal functions and application schematics, along with mechanical drawing data and TI’s standard product notices.
| Dropout voltage | 0.3 V |
|---|---|
| Voltage regulation accuracy | better than +1% |
| Package options | 8‑Pin SOIC, 8‑Pin TSSOP, 8‑Pin MSOP |
| Supply voltage range | 4.5 V – 15 V |
| Charge termination method | Minimum current detection |
The dropout voltage is 0.3 V, which helps minimize heat dissipation.
The device is offered in 8‑pin SOIC, 8‑pin TSSOP, and 8‑pin MSOP packages.
Yes, optional cell‑temperature monitoring is provided before and during charge.
Charging stops when the current drops to a minimum‑current threshold.