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CAT4237 Driver Datasheet PDF

High Voltage CMOS Boost White LED Driver

High Voltage CMOS Boost White LED Driver

 

 

 

Part Number CAT4237
Description High Voltage CMOS Boost White LED Driver
Feature www.
DataSheet4U.
com CAT4237 High Volta ge CMOS Boost White LED Driver Features









• Drives 6 to 8 White LEDs in serie s from 3V Up to 87% Efficiency Low Quie scent Ground Current 0.
6mA Adjustable O utput Current (up to 40mA) High Frequen cy 1MHz Operation High Voltage Power Sw itch Shutdown current less than 1µA Op en LED low power mode Automatic Shutdow n at 1.
9V (UVLO) Thermal shutdown prote ction Thin SOT23 5-Lead (1mm max height ) Product Description The CAT4237 is a DC/DC step-up converter that delivers an accurate constant current ideal for driving LEDs.
Operation at a constant .
Manufacture Catalyst Semiconductor
Datasheet
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CAT4237

 

 

 


 

 

 

Part Number CAT4237
Description High Voltage CMOS Boost White LED Driver
Feature CAT4237 High Voltage CMOS Boost White L ED Driver Description The CAT4237 is a DC/DC step−up converter that delivers an accurate constant current ideal for driving LEDs.
Operation at a constant switching frequency of 1 MHz allows the device to be used with small value ext ernal ceramic capacitors and inductor.
LEDs connected in series are driven wit h a regulated current set by the extern al resistor R1.
LED currents up to 40 m A can be supported over a wide range of input supply voltages from 2.
8 V to 5.
5 V, making the device ideal for batter y−powered applications.
The CAT4237 h igh−voltage output .
Manufacture ON Semiconductor
Datasheet
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CAT4237

 

 

 

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