MCP1650 datasheet(6/20 Pages) MICROCHIP

6 / 20 page

LED Lighting Solutions Design Guide

www.microchip.com/lighting

LED Lighting Solutions

Literature on the Web

■ MCP1650/51/52/53 Data Sheet, DS21876

■ AN980 – Designing a Boost-Switching Regulator with

the MCP1650, DS00980

■ DG10 – Power Solutions Design Guide, DS21913

High Efficiency LED Smart Driver

9-13 volt systems easily adapt to a Smart Driver Circuit

to drive High Power LEDs using the MCP1702, MCP1652

and a PIC10F202. The MCP1702 directly connected to

the 12 volt source creates a 5 volt bias supply capable of

delivering 250 mA to the intelligent boost control circuit.

The LEDs are powered by the source voltage boosted by the

MCP1652, minimizing the current requirements for the 5V

power system. A PIC10F202 adds intelligence to the circuit

providing a means for thermal protection, load open and

short circuit protection as well as the capability of a user

interface to control dimming and other features.

Low Battery Detect enables the designer to determine

a trip point for a low battery condition to make “smart”

adjustments to the circuit function with the PIC10F202. The

Power Good Indication enables the designer to determine

when output voltage conditions are correct.

MCP165X Driver Devices

Device

Special Features

Package

MCP1650

Standard Device

8-Pin MSOP

MCP1651

Low Battery Detect

8-Pin MSOP

MCP1652

Power Good Indication

8-Pin MSOP

MCP1653

Low Battery Detect and

Power Good Indication

10-Pin MSOP

10 LED String

700 mA, 34V DC

PIC10F202

MCP1652

VIN

GND

EXT

SHDN

User

Interface

Dimming

Output

Control

MCP1703

5V LDO

9-13V DC

LED Smart Driver with 12V Input

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