Overview
The BQ2057TSN is a Li-Ion LDO Linear Charge Management IC manufactured by Texas Instruments. This component is designed for cost-sensitive and compact portable electronics, offering advanced charging management for single-cell and dual-cell Li-Ion and Li-Polymer battery packs. It is particularly suitable for applications requiring high-accuracy current and voltage regulation, battery conditioning, temperature monitoring, and charge termination. The BQ2057TSN is available in an 8-pin SOIC package, making it ideal for space-constrained designs. Its target users include manufacturers of portable medical devices, emergency call systems, and consumer electronics.
Key Specifications
| Parameter | Value | Unit | Notes |
|---|---|---|---|
| Manufacturer | Texas Instruments | - | - |
| Function | Li-Ion LDO Linear Charge Management | - | - |
| Battery Chemistry | Li-Ion, Li-Polymer | - | - |
| Supply Voltage | 4.5 to 15 | V | - |
| Output Voltage | 5 | V | - |
| Output Current | 4.5 | A | - |
| Operating Temperature | -20 to 70 | °C | - |
| Package | 8-SOIC | - | - |
Key Features
- High-accuracy current and voltage regulation for precise charging control.
- Integrated battery conditioning to revive deeply discharged cells.
- Temperature monitoring to ensure safe charging conditions.
- AutoComp™ dynamic compensation for internal battery impedance, reducing charging time.
- Low-power sleep mode for energy efficiency.
Applications
The BQ2057TSN is widely used in portable medical devices, emergency call systems, and consumer electronics. Its compact design and advanced features make it suitable for applications requiring reliable and efficient battery charging management. In portable medical devices, it ensures safe and accurate charging, while in consumer electronics, it enhances battery life and performance.
Q & A
What is the operating voltage range of the BQ2057TSN?
The operating voltage range is 4.5V to 15V.
What battery chemistries does the BQ2057TSN support?
It supports Li-Ion and Li-Polymer batteries.
What is the output current capability of the BQ2057TSN?
The output current is up to 4.5A.
Does the BQ2057TSN include temperature monitoring?
Yes, it includes integrated temperature monitoring for safe charging.
What is the purpose of AutoComp™ in the BQ2057TSN?
AutoComp™ dynamically compensates for internal battery impedance, reducing charging time.
What is the package type of the BQ2057TSN?
It is available in an 8-pin SOIC package.
Can the BQ2057TSN be used in portable medical devices?
Yes, it is suitable for portable medical devices due to its precise charging and safety features.
What is the low-power sleep mode in the BQ2057TSN?
It is a mode that minimizes power consumption when the device is not actively charging.
What is the operating temperature range of the BQ2057TSN?
The operating temperature range is -20°C to 70°C.
Does the BQ2057TSN support dual-cell battery packs?
Yes, it supports both single-cell and dual-cell Li-Ion and Li-Polymer battery packs.
