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MCP1631RD-DCPC1(#1): 1 ~ 4s NiMH, 1 ~ 2s Li-Ion Charger

Summary

The MCP1631HV Digitally Controlled Programmable Current Source Reference Design is used to drive and dim one or more power LEDs in a series or parallel topology (depending on the LED’s capability). The reference design may also be used to charge one to four cell NiMH/NiCd or one to two cell Li-Ion battery packs. The board uses the MCP1631HV high-speed analog PWM controller and PIC16F616 microcontroller to generate the proper dimming ratio for LEDs or charge algorithm for NiMH, NiCd and Li-Ion batteries.

The MCP1631HV Digitally Controlled Programmable Current Source Reference Design is used to evaluate Microchip’s MCP1631HV in a SEPIC power converter application. The MCP1631HV Digitally Controlled Programmable Current Source Reference Design is user programmable. Multiple user functions may be selected by re-compiling the source code.

The board can drive LEDs or charge NiMH, NiCd or Li-Ion batteries with a maximum current of 1A. In Charger Mode, the MCP1631HV Digitally Controlled Programmable Current Source Reference Design provides a constant current charge (Ni-based chemistry) and constant current/constant voltage (Li-Ion based chemistry) with preconditioning, cell temperature monitoring (for Ni-based) and battery pack fault monitoring. In LED Driver mode, the MCP1631HV Digitally Controlled Programmable Current Source Reference Design provides a constant user defined current and a 10:1 dimming ratio. The dimming ratio and maximum current can be selected before compiling the source code. The board has LED indicators to provide multiple fault indication.

Specifications

Manufacturer Microchip Technology
Category Power Management
Sub-Category Battery Chargers
Eval Board Part Number MCP1631RD-DCPC1-ND
Eval Board Supplier Microchip Technology
Eval Board -
Cell Type Lithium Ion, Li-Ion
Nickel Cadmium, Ni-Cad
Nickel Metal Hydride, NiMH
Configuration 1 ~ 2 Cells (Li-Ion)
1 ~ 4 Cells (NiMH/NiCd)
Voltage In 3.5 ~ 16 V
Voltage Out 8.5 V
Current Out 1 A
Features Cell Preconditioning
Cell Temperature Monitoring
Fault Indication
Over Voltage Protection
Status Indication
Thermal Protection
Quiescent Current [Typical] 3.7 mA
Sleep Mode Current [Typical] 4.4 µA
Component Count + Extras 38 + 2
Application / Target Market Battery Chargers
Design Author Microchip
Main I.C. Base Part MCP1631
Quiescent Current [Maximum] 5 mA
Sleep Mode Current [Maximum] 17uA
Date Created By Author
Date Added To Library 2017-05

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