CAT4004 Series

LED Driver, Constant Current, 4-Channel, with EZDim™

Catalog

LED Driver, Constant Current, 4-Channel, with EZDim™

Part	Mounting Type	Voltage - Supply (Max)	Package / Case	Operating Temperature [Max]	Operating Temperature [Min]	Internal Switch(s)	Dimming	Current - Output / Channel [custom]	Number of Outputs	Applications	Supplier Device Package	Type	Voltage - Supply (Min) [Min]
ON Semiconductor CAT4004AHU2-GT3B	Surface Mount	5.5 V	8-UFDFN Exposed Pad	85 °C	-40 °C		Multi-Step	20 mA	4	Backlight	8-UDFN (2x2)	Linear	2.4 V
ON Semiconductor CAT4004VP2-GT3	Surface Mount	5.5 V	8-WFDFN Exposed Pad	85 °C	-40 °C		Multi-Step	40 mA	4	Backlight	8-TDFN (2x3)	Linear	2.4 V

Catalog

LED Driver, Constant Current, 4-Channel, with EZDim™

Key Features

• Four LED current sinks with tight matching

• Low Dropout Driver 130 mV at 30 mA

• No switching noise

• Shutdown current < 1μA

• LED current set by external resistor

• Dimming via 1-wire EZDim™ interface

• Thermal shutdown protection

Description

The CAT4004 provides four matched low dropout current sources to drive LEDs. An external resistor on RSET sets the current in the LED channels. 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 inputs supports device enable and a digital dimming interface for current setting of all LEDs. Six different current dimming ratios are available.The device is aimed at 'direct drive' battery applications. It is required that the battery or voltage source have enough headroom to drive the LED forward voltage and current sink (>150 mV).