Description
The BQ2057CSN is a highly advanced, low-cost linear charger specifically designed for single-cell Li-ion and Li-polymer battery applications. Utilizing Texas Instruments’ innovative AutoComp™ technology, this controller ensures highly accurate battery charging by compensating for voltage drops in the charging path, allowing for faster and more precise charge completion. It is a robust, integrated solution for managing the complex requirements of modern lithium-based power sources.
Designed for ease of implementation, the BQ2057CSN provides a complete charging solution with minimal external components. It manages the entire charge cycle, including pre-conditioning, constant-current (CC) fast-charge, and constant-voltage (CV) regulation. Housed in a compact SMD-8 package, it is perfect for space-constrained designs such as portable medical devices, handheld industrial equipment, and personal consumer gadgets, ensuring your batteries are charged safely, efficiently, and to their maximum capacity.
Key Features
- AutoComp™ Technology: Intelligently compensates for path resistance, reducing charge time and ensuring the battery reaches full capacity accurately.
- Precision Charging: Fixed 4.1V output regulation tailored for standard single-cell Li-ion/Li-polymer chemistry.
- Complete Charge Management: Automatically handles the full cycle: pre-charge conditioning, CC fast-charge, and CV termination.
- System Safety: Integrated features including status monitoring and thermal protection to ensure safe battery operation.
- Compact SMD-8 Package: A small, efficient surface-mount footprint that is ideal for modern, high-density portable device PCBs.
Application
- Portable Medical Devices: Provides reliable and safe charging for essential health-monitoring equipment.
- Consumer Electronics: Perfect for smartwatches, Bluetooth headsets, and other compact lithium-powered gadgets.
- Handheld Industrial Tools: Ensures durable and consistent charging performance for field-use equipment.
- DIY Prototyping: A fundamental tool for hobbyists and engineers building custom battery-powered projects using Li-ion technology.
- Embedded Systems: Ideal for integrated battery management in small-scale, remote sensors and IoT hardware.
Package Includes
- 1 x BQ2057CSN 4.1V 1-Cell Li-ion Charge Controller IC (SMD-8)
Technical Specifications
| Parameter | Specification |
|---|---|
| Device | BQ2057CSN |
| Target Chemistry | 1-Cell Li-ion / Li-polymer |
| Output Voltage | 4.1V (Fixed) |
| Package Type | SMD-8 |
| Shipping Weight | 0.001 kg |
| Shipping Dimensions | 4 × 4 × 1 cm |
Note: Product images are shown for illustrative purposes only and may differ from the actual product. For complete technical parameters, please refer to the official device datasheet.
