CAT4104V-GT3 Datasheet, PDF (1/14 Pages) ON Semiconductor – 700 mA Quad Channel Constant Current LED Driver

700 mA Quad Channel Constant Current LED Driver
CAT4104
FEATURES
„ 4 matched LED current sinks up to 175 mA
„ Up to 25 V operation on LED pins
„ Low dropout Current Source (0.4 V at 175 mA)
„ LED current set by external resistor
„ High frequency PWM dimming via EN/PWM
„ “Zero” current Shutdown mode
„ Thermal shutdown protection
„ RoHS-compliant TDFN 8-Pad 2 x 3 mm and
SOIC 8-Lead packages
APPLICATIONS
„ Automotive Lighting
„ General and Architectural Lighting
„ LCD backlight
ORDERING INFORMATION
Part
Number
Package
Quantity
per Reel
Package
Marking
CAT4104V-GT3 SOIC-8*
CAT4104VP2-GT3 TDFN-8*
3,000
3,000
CAT4104V
HC
* Lead Finish is NiPdAu
DESCRIPTION
The CAT4104 provides four matched low dropout current
sinks to drive high-brightness LED strings up to 175 mA
per channel. The LED channel current is set by an
external resistor connected to the RSET pin. The LED
pins are compatible with high voltage up to 25 V
supporting applications with long strings of LEDs.
The EN/PWM logic input supports the device enable and
high frequency external Pulse Width Modulation (PWM)
dimming control.
Thermal shutdown protection is incorporated in the device
to disable the LED outputs whenever the die temperature
exceeds 150ºC.
The device is available in the 8-pad TDFN 2 mm x 3 mm
package and the SOIC 8-Lead 150 mil wide package.
PIN CONFIGURATION
TDFN 8-Pad (Top View)
LED1 1
LED2 2
LED3 3
LED4 4
8 RSET
7 VIN
6 EN/PWM
5 GND
SOIC 8-Lead (Top View)
LED1
1
8
RSET
LED2
2
7
VIN
LED3
3
6
EN/PWM
LED4
4
5
GND
TYPICAL APPLICATION CIRCUIT
VCC
3 V to 25 V
LEDs
VIN
5V
OFF ON
R1
768 Ω
CAT4104
VIN
LED1
LED2
EN/PWM
LED3
RSET
LED4
GND
175 mA
© 2009 SCILLC. All rights reserved.
1
Characteristics subject to change without notice
Doc. No. MD-5041 Rev. B