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SC441A

Part Number	SC441A
Manufacturer	Semtech Corporation
Description	High Efficiency Integrated Driver
Published	Aug 20, 2009
Detailed Description	SC441A com POWER MANAGEMENT Features                High Efficiency Integrated Driver f...
Datasheet	SC441A PDF File

Overview

SC441A com POWER MANAGEMENT Features                High Efficiency Integrated Driver for 4-Strings of 150mA LEDs Description The SC441A is a high-efficiency multiple string WLED driver with an integrated boost converter.
It operates over a wide input range from 4.
5V to 21V with a maximum output voltage of 36V and a 2.
5A internal power switch.
It can drive up to forty WLEDs in 4 strings with current up to 150mA per string.
The string-to-string current matching is 2% typical, 3% maximum.
The overall efficiency is greater than 90% due to the low current sense voltage and a low-impedance internal power switch.
The wide PWM dimming range boasts a ratio of 500: 1.
...

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