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EV0021

Part Number	EV0021
Manufacturer	ETC
Description	High Efficiency White LED Driver
Published	Mar 30, 2005
Detailed Description	MP1521 High Efficiency White LED Driver Monolithic Power Systems General Description The MP1521 is a constant-current B...
Datasheet	EV0021 PDF File

Overview

MP1521 High Efficiency White LED Driver Monolithic Power Systems General Description The MP1521 is a constant-current Boost Regulator.
This IC has three individual current-sensing feedbacks, which are ideal for driving multiple strings of series connected LEDs.
The OLS pin is designed for detecting loose or open LED connections.
The IC uses a peak current, constant minimum off-time architecture.
The feedback pins measure voltage across sense resistors in series with the LED strings.
When supplying a bias current of 20mA, the voltage drop across the sense resistor is only 0.
4V to minimize power loss.
Either a DC voltage or a PWM signal at the BRT/PWM input can control the LED brightness.
The...

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EV0021 High Efficiency White LED Driver - ETC

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