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Product Detailed Parameters
- Description：IC BATT CHG LI-ION 1CELL 8TSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT),Bulk
- Battery Chemistry：Lithium Ion/Polymer
- Voltage - Supply (Max)：15V
- Operating Temperature：-20°C ~ 70°C (TA)
- Mounting Type：Surface Mount
- Package / Case：8-TSSOP (0.173", 4.40mm Width)
- Supplier Device Package：8-TSSOP
- Number of Cells：1
- Current - Charging：Constant - Programmable
- Programmable Features：Current
- Fault Protection：-
- Charge Current - Max：-
- Battery Pack Voltage：4.2V
- Interface：-
- Grade：-
- Qualification：-
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Overview
The BQ2057CTSTR is a low-dropout linear charge management integrated circuit designed for lithium-ion and lithium-polymer battery systems. It supports single-cell configurations with a regulated output voltage of 4.2 V and a programmable constant-current charging capability up to 2 A. The device operates from a supply voltage range of 4.5 V to 15 V, making it suitable for various power sources. It is housed in an 8-pin TSSOP package with surface-mount installation. The component functions within an operating temperature range of -20 °C to +70 °C.
Feature Summary
- Integrates AutoComp technology to automatically compensate for system resistance during the charging process.
Applications
- Portable electronic devices requiring single-cell lithium-ion or lithium-polymer battery charging
- Consumer electronics utilizing linear charge management solutions
- Battery-powered equipment operating within standard industrial temperature ranges
Procurement Notes
Verify the specific suffix 'CTR' against the manufacturer's official documentation to confirm tape-and-reel packaging specifications. Ensure compatibility with the target application's thermal requirements and input voltage constraints before procurement. Cross-reference the part number with current datasheets to validate active status and any recent design changes.
Selection Notes
Select this component for applications requiring a simple linear charging solution for single-cell lithium batteries. It is appropriate when system resistance compensation is needed to maintain accurate charge termination. Consider the 2 A maximum output current and the 4.5 V to 15 V input range to ensure alignment with the power supply design.
Part Context
This part belongs to the Texas Instruments BQ2057C series of battery management ICs. The series includes variants such as BQ2057CTS and BQ2057CSN, which share similar electrical characteristics but differ in package types like SOIC-8. The BQ2057CTSTR specifically utilizes the TSSOP-8 package format.
Replacement Considerations
Compatible alternatives within the same family include BQ2057CTS and BQ2057CSN. Verify that the package footprint matches the PCB design when substituting between TSSOP and SOIC variants.
