CAT4004B Datasheet PDF (Constant Current Programmable LED Driver)

CAT4004B - Constant Current Programmable LED Driver

This page provides the datasheet information for the CAT4004B, a member of the CAT4002B Constant Current Programmable LED Driver family.

Description

matched low dropout current sources to drive LEDs.

The CAT400XB requires no external RSET resistor.

The LED current is internally set to 25 mA when the device is first enabled.

Features

3, 4 LED Current Sinks with Tight Matching.
32 Dimming Levels.
Low Dropout Driver 75 mV at 20 mA.
No Switching Noise.
Shutdown Current less than 1 mA.
25 mA Max LED Current per Channel.
Dimming via 1-wire EZDim Interface.
Thermal Shutdown Protection.
RoHS Compliant.
6-lead TSOT-23, TSOP, SC-70, and 8-pad UDFN 2 mm x 2 mm Packages Typical.

Datasheet Details

Part number	CAT4004B
Manufacturer	ON Semiconductor
File Size	378.16 KB
Description	Constant Current Programmable LED Driver
Datasheet	CAT4004B Datasheet
Additional preview pages of the CAT4004B datasheet.

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Full PDF Text Transcription

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Constant Current Programmable LED Driver with 32 Dimming Levels CAT4003B, CAT4004B Description The CAT4003B and CAT4004B provide respectively three and four matched low dropout current sources to drive LEDs. The CAT400XB requires no external RSET resistor. The LED current is internally set to 25 mA when the device is first enabled. Each LED channel includes an individual control loop allowing the device to handle a wide range of LED forward voltages while still maintaining tight current matching. The EN/DIM logic input supports the device enable and a digital dimming interface for setting the LED channel current with 32 linear dimming levels. LEDs can be powered directly from a Lithium-ion battery due to the low dropout (75 mV at 20 mA) current sinks.

Published: Aug 9, 2010 |