MCP1630RD-NMC1: 3 NiMH Cells, 6 ~ 14V in


The MCP1630 Low-Cost NiMH Battery Charger Reference Design demonstrates Microchip’s high-speed Pulse Width Modulator (PWM) (the MCP1630) used in a battery charger application. The MCP1630 is fully assembled and tested for charging three series cell NiMH batteries. When used in conjunction with a microcontroller, the MCP1630 will control the power system duty cycle to provide output voltage or current regulation.

The PIC12F683 microcontroller can be used to regulate output voltage or current, switching frequency and maximum duty cycle. The MCP1630 generates duty cycle and provides fast overcurrent protection based off various external inputs.

External signals include the input oscillator, the reference voltage, the feedback voltage and the current sense. The output signal is a square-wave pulse. The power train used for the MCP1630 Low-Cost NiMH Battery Charger Reference Design is a Single-Ended Primary Inductive Converter (SEPIC).The PIC12F683 microcontroller is programmable, allowing the user to modify or develop their own firmware routines to further evaluate the MCP1630 Low-Cost NiMH Battery Charger Reference Design in this application.


Manufacturer Microchip Technology
Category Power Management
Sub-Category Battery Chargers
Eval Board Part Number MCP1630RD-NMC1-ND
Eval Board Supplier Microchip Technology
Eval Board -
Cell Type Nickel Metal Hydride, NiMH
Configuration 3 in Series
Voltage In 6 ~ 14 V
Voltage Out 5 V
Current Out 1.35 A
Features Auto Off
Bad Battery Detection
Cell Preconditioning
Cell Temperature Monitoring
Current Limit (Adj. or Fixed)
Over Charge Protection
Over Current Protection
Over Voltage Protection
Reverse Polarity Protection
Short Circuit Protection
Soft Start
Quiescent Current [Typical]
Sleep Mode Current [Typical]
Component Count + Extras 40 + 3
Application / Target Market Portable Devices
Design Author Microchip
Main I.C. Base Part MCP1630
Quiescent Current [Maximum]
Sleep Mode Current [Maximum]
Date Created By Author
Date Added To Library 2011-10

Eval Board


Order a fully assembled board:

Quantity Available: 0