CAT4104
CAT4104 is 700mA Quad Channel Constant Current LED Driver manufactured by onsemi.
700 m A Quad Channel Constant Current LED Driver
Description The CAT4104 provides four matched low dropout current sinks to drive high- brightness LED strings up to 175 m A per channel. The LED channel current is set by an external resistor connected to the RSET pin. The LED pins are patible 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 150°C.
The device is available in the 8- pad TDFN 2 mm x 3 mm package and the SOIC 8- Lead 150 mil wide package.
Features
- 4 Matched LED Current Sinks up to 175 m A
- Up to 25 V Operation on LED Pins
- Low Dropout Current Source (0.4 V at 175 m A)
- LED Current Set by External Resistor
- High Frequency PWM Dimming via EN/PWM
- “Zero” Current Shutdown Mode
- Thermal Shutdown Protection
- TDFN 8- pad 2 x 3 mm and SOIC 8- lead Packages
- These Devices are Pb- Free, Halogen Free/BFR Free and are Ro HS pliant
Applications
- Automotive Lighting
- General and Architectural Lighting
- LCD Backlight
VCC 3 V to 25 V
LEDs
VIN 5V OFF ON
R1 768 W
LED1
LED2 EN/PWM
LED3
RSET
LED4
175 m A
DATA SHEET...
