Product Detailed Description:
Product Overview
HY2131-AF1A is a high-precision lithium-ion/lithium-polymer battery series protection IC launched by Taiwan's HYCON, primarily used for overcharge protection in 2~3 cell packs. The chip integrates voltage detection, delay control, and low-power design, suitable for battery management systems (BMS) requiring high reliability secondary protection.
2. Key Features
High-precision voltage detection
- Overcharge Test Voltage (VCUn): 4.350V (Accuracy ±20mV)
- Overcharge Release Voltage (VCRn): 4.050V
- Standby Test Voltage (VSB): 3.5V
- Supports 2~3 battery串联 configurations, selectable via external circuit.
(2) Built-in Time Delay Control
- Overcharge Detection Delay (TOC): 6000ms (±20%)
- Overcharge Release Delay (TCR): 16ms
- Supports time delay reduction feature, capable of shortening detection time under specific conditions (e.g., 12ms).
(3) Low-power design
- Operating Current: Typical 3.0μA, Maximum 6.0μA
- Standby Current: 0.5μA higher
- Suitable for portable devices, extending battery life.
(4) Additional Features
- High-pressure-resistant design: Less than 30V
- Wide operating temperature range: -40°C ~ +85°C
- Packaging: TSOT-23-6 (Miniaturized Design)
- Halogen-free and RoHS compliant.
3. Typical Applications
(1) Lithium-ion/Lithium Polymer Battery Pack Protection
- Secondary protection for 2~3 series-connected batteries to prevent overcharge damage.
- Suitable for electric tools, drone batteries, and energy storage systems.
(2) Consumer Electronics
- Battery management for mobile power banks, Bluetooth headphones, and smartwatches.
- Backup batteries for laptops and tablets.
(3) Industrial & Automotive Electronics
- Auxiliary protection circuit for electric bicycles and electric vehicles (BMS).
- Battery safety management for industrial energy storage equipment.
4. Advantages Analysis
Precision Testing: ±20mV voltage detection accuracy, enhancing battery safety.
No external capacitors required: built-in delay circuit, reducing the cost of peripheral components.
Low power consumption: Suitable for battery-powered devices, extending battery life.
Miniature Packaging: TSOT-23-6, ideal for compact designs.
Wide temperature support: Suitable for harsh environments (such as automotive electronics).
