onsemi CAT3637HV3-GT2

CAT3637 Series 30 mA 5.5 V 1.1 MHz SMT Quad Mode 6-Channel LED Driver - TQFN-16

Lead Free RoHS Compliant QUAD SERIAL IC LED Driver -40C~85C TA 800kHz~1.1MHz 6V 180mA

CAT3637HV3-GT2 LED DRIVER IC, 2.5 - 5.5 V DC 180MA 16-PIN TQFN

The CAT3637 is a high efficiency Quad-Mode fractional charge pump that can drive up to six LEDs programmable by a 1-wire digital interface. The inclusion of a 1.33x fractional charge pump mode increases device efficiency by up to 10% over traditional 1.5x charge pumps with no added external capacitors. Low noise input ripple is achieved by operating at a constant switching frequency which allows the use of small external ceramic capacitors. The multi-fractional charge pump supports a wide range of input voltages from 2.5V to 5.5V. The EN/SET logic input functions as a chip enable and a digital programming interface for setting the current in the LED channels. The 1-wire pulse-programming interface supports 15 linear steps from zero current to 30mA full-brightness in 2mA steps. The device is available in a tiny 16-pad TQFN 3 x 3mm package with a maximum height of 0.8mm. ON Semiconductors Quad-Mode 1.33x charge pump switching architecture is patented.