MCP7383 Family (10 parts in our catalog)

The MCP73831/2 series by Microchip Technology consists of highly advanced linear charge management controllers designed for space-constrained, cost-sensitive applications. These devices are specifically engineered for single-cell Li-Ion and Li-Polymer batteries, integrating a pass transistor, current sensing, and reverse discharge protection into a compact SOT-23 or DFN package. They employ a constant-current/constant-voltage charge algorithm with selectable termination points and safety features to ensure reliable battery lifecycle management.

Key Features

• Integrated pass transistor and current sense for reduced BOM count
• Programmable charge current up to 500mA via external resistor
• High accuracy voltage regulation at ±0.75% for battery longevity
• Automatic power-down when input power is removed to prevent drain
• Status output for driving LEDs or interfacing with host microcontrollers

Sub-families

Typical Use Cases

The MCP7383 family is a staple in portable consumer electronics where board space is at a premium. Embedded engineers frequently specify these controllers for wearable devices, such as fitness trackers and smartwatches, where the integration of the pass transistor minimizes the external component footprint. They are equally suited for Bluetooth headsets, digital cameras, and handheld medical diagnostic tools. In industrial contexts, these devices serve as reliable charging solutions for portable data loggers and remote sensors that rely on rechargeable lithium-based chemistries. The simplicity of the single-resistor current programming makes it ideal for rapid prototyping and high-volume production where ease of implementation and thermal stability are critical design requirements.

Popular Variants

Top variants from across the family, with specs that differentiate them.

Alternatives to Consider