详情描述

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).