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MIC2287 6-LED EV: 20mA @ 34V Max, 2.5 ~ 10V in

Summary

The MIC2287 is a small 1.2 MHz constant frequency PWM white LED driver. The MIC2287 is available in either a thin SOT-23 or a 2 mm x 2 mm MLF™ package. High power densities in a very small size are achieved using its internal 34 V/500 mA switch.

The MIC2287 evaluation board requires an input power source that is able to deliver greater than 500 mA at 2.5 V.

The evaluation board does not have reverse polarity protection. Applying a negative voltage to the Vin terminal may damage the device.

The MIC2287 evaluation board is tailored for a Li-Ion range input supply voltage. It should not exceed 10 V on the input.

Specifications

Manufacturer Microchip Technology
Category Lighting
Sub-Category LED Drivers - DC In
Eval Board Part Number 576-4409-ND
Eval Board Supplier Microchip Technology
Eval Board Board not Stocked
Voltage In 2.5 ~ 10 V
Topology Step Up
Current Out 20 mA
Voltage Out (Max) 34 V
Outputs and Type 1 Non-Isolated
Efficiency @ Conditions >82%, 4.2V in, 10 ~ 21 mA (6 LED)
>82%, 3.6V in, 11 ~ 21 mA (6 LED)
>79%, 3V in, 5.5 ~ 21 mA (6 LED)
Features Current Limit (Adj. or Fixed)
Over Voltage Protection
PFM or PWM
Shutdown, Enable, Standby
Thermal Protection
Under Voltage Protection, Brown-Out
Switching Frequency 1.2 MHz
Component Count + Extras 16 + 0
Design Author Microchip
Application / Target Market Cell Phones
Digital Cameras
Flashlight / Torch
GPS
LCD Backlighting
Power: Auxiliary Power Supply
Main I.C. Base Part MIC2287
Date Created By Author 2005-05
Date Added To Library 2014-03

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