mcp73831t-2aci-ot-li-ion-charger

Important Note

This entire repo was AI created - including all of the data within. The intent was to A) help me with my personal electronics inventory; and B) see how I could use AI to make that process a bit easier. DO NOT TRUST!

Details

The MCP73831T-2ACI-OT is a single-cell linear lithium-ion/lithium-polymer battery charge management controller from Microchip Technology. It provides a complete linear charging solution with integrated power MOSFETs and comprehensive protection circuitry.

Description

This compact battery charger IC is designed for simple, reliable charging of single-cell lithium batteries. It features integrated power MOSFETs, thermal regulation, and overvoltage fault protection for safe battery charging.

Specifications

• Type: Linear Li-Ion/LiPo Battery Charger
• Package: SOT-23-5 (5-pin)
• Charge Current (Max): 500mA
• Battery Float Voltage: 4.2V ±1%
• Input Supply Voltage: 3.75V to 6V (absolute max 6.5V)
• Battery Type: Single-cell Li-Ion or Li-Polymer
• Thermal Regulation: Protects device up to 120°C junction temperature
• Charge Status Output: Open-drain CHRG pin (pulls low during charging)
• Fault Protection: Overvoltage protection included
• Features:
  • Integrated power MOSFETs
  • Thermal shutdown
  • Overvoltage fault protection
  • Low external component count

Pin Functions

• GND: Ground reference
• V_IN: Power supply input (e.g., 5V USB)
• BAT: Connects to battery positive terminal
• CHRG: Charge status indicator output (open-drain)

Applications

• USB-powered battery charging
• Portable electronics
• IoT devices
• Wearable devices
• Mobile accessories

Storage

Store in cool, dry location. Keep in protective sleeve to prevent damage.