CAT3603 Description
The CAT3603 is a charge pump LED driver operating in either 1x (LDO) mode or 1.5x fractional mode regulating current through each of the 3 LED pins. Operation at a constant switching frequency of 1 MHz allows the use of very small value ceramic capacitors. The CAT3603 drives 3 white LEDs in parallel and provides tightly matched regulated current to achieve uniform brightness in LCD backlighting applications.
CAT3603 Key Features
- Drives up to 3 LEDs
- Current Setting Resistor
- patible with Supply Voltage of 3 V to 5.5 V
- Power Efficiency up to 91%
- Output Current up to 30 mA per LED
- Fractional Pump 1x/1.5x
- Low Noise Input Ripple
- Fixed High Frequency Operation 1 MHz
- Soft Start and Current Limiting
CAT3603 Applications
- Drives up to 3 LEDs