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BQ21040DBVR
BQ21040DBVR
| Part Number | BQ21040DBVR |
|---|---|
| Manufacturer | Texas Instruments Incorporated |
| Category | Integrated Circuits (ICs) > Power Management > Battery Chargers |
| Description | 1-Cell Li-Ion / Li-Polymer Battery Charger, 500mA, 4.2V Fixed, 2.5V-6.3V Input, -40 to 85°C, SOT-23-5 |
Product Overview
The BQ21040DBVR is a compact, linear single-cell Li-ion and Li-polymer battery charger from Texas Instruments, optimized for portable, low-power, and space-constrained applications. This fully integrated device delivers up to 500mA charging current with a fixed 4.2V regulation voltage, supporting a wide input voltage range of 2.5V to 6.3V for compatibility with USB and low-voltage power sources. It features built-in thermal regulation, charge termination, trickle charging, and fault protection to ensure safe and reliable charging. Housed in an ultra-small SOT-23-5 package, the BQ21040DBVR offers high efficiency and minimal external components for cost-effective battery charging designs.
Key Specifications
| Parameter | Value |
|---|---|
| RoHS | Compliant (RoHS 2/3 Compliant, Lead-Free) |
| EDA/CAD Models | Available (Gerber, STEP, IDF, Symbol, Footprint) |
| Warranty | 3 Years Standard Warranty |
| Brand | Texas Instruments (TI) |
| Battery Chemistry | 1-Cell Li-Ion / Li-Polymer |
| Charge Current | Up to 500mA |
| Input Voltage Range | 2.5V – 6.3V |
| Regulation Voltage | 4.2V ±0.7% |
| Operating Temperature | -40°C to +85°C |
| Package Type | SOT-23-5 |
Typical Applications
- Wearable Devices and Smart Watches
- Portable IoT Sensors and Tracking Tags
- Battery-Powered Handheld Electronics
- USB-Charged Small Appliances
- Wireless Headsets and Audio Devices
- Compact Industrial Sensor Modules
- Consumer Electronics and Toys
- Low-Power Embedded Charging Systems
Technical Support
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