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Product Detailed Parameters
- Description：IC BATT CHG LI-ION 1CELL 8VSSOP
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),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, 8-MSOP (0.118", 3.00mm Width)
- Supplier Device Package：8-VSSOP
- Number of Cells：1
- Current - Charging：Constant - Programmable
- Programmable Features：Current
- Fault Protection：-
- Charge Current - Max：-
- Battery Pack Voltage：4.1V
- Interface：-
- Grade：-
- Qualification：-
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Overview
The BQ2057DGKR is a linear charge management integrated circuit designed for single and two-cell lithium-polymer battery systems. Manufactured by Texas Instruments, it operates within a supply voltage range of 4.5 V to 15 V and delivers an output current of 2 A at a regulated voltage of 4.2 V. The component is housed in an 8-pin VSSOP package suitable for surface mount technology. It functions across a temperature range from -20 °C to +70 °C.
Feature Summary
- Advanced linear charge management architecture optimized for lithium-ion and lithium-polymer chemistries
- Integrated linear regulator supporting single and dual cell configurations
- Compact surface-mount packaging for space-constrained portable designs
Applications
- Single-cell lithium-polymer battery charging systems
- Two-cell lithium-ion battery pack management
- Portable electronic device power regulation
Procurement Notes
Verify the specific suffix DGKR confirms the VSSOP-8 tape-and-reel packaging configuration. Confirm RoHS compliance status matches current manufacturing standards. Ensure the operating temperature range aligns with your system's environmental requirements before finalizing procurement.
Selection Notes
Select this component when designing circuits requiring linear charging for one or two series-connected lithium cells. The 2 A output capability supports moderate charging rates. Ensure the input supply voltage remains within the 4.5 V to 15 V operational window to maintain proper regulation and thermal performance.
Part Context
This part belongs to the BQ2057C family of battery management ICs from Texas Instruments. The family includes variants such as BQ2057CDGKR and BQ2057CSN, which share similar electrical characteristics but differ in package types like SOIC-8 or reel options. These components are categorized under PMIC battery chargers.
Replacement Considerations
Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing board layouts if considering alternative packages within the same family.
