CAT3612
FEATURES
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- Dual matched regulated LED channels 300m A output current (150m A per channel) 1-wire EZDim TM Programmable LED Current 32 accurate dimming levels Power efficiency up to 90% Fractional pump 1x/1.5x Low noise input ripple Fixed High Frequency Operation 1MHz “Zero” Current Shutdown Mode Soft start and current limiting Short circuit protection Thermal shutdown protection 12-lead TDFN 3mm x 3mm package
PRODUCT DESCRIPTION
The CAT3612 is a high-efficiency 1x/1.5x fractional charge pump with programmable current in two LED channels. Each channel delivers accurate regulated current up to 150m A and make CAT3612 ideal for driving one or two flash LEDs. Low noise operation is achieved by operating at a constant switching frequency of 1MHz which allows the use of small external ceramic capacitors. The 1x/1.5x fractional charge pump supports a wide range of input voltages from 3V to 5.5V with efficiency up to 90%, and is ideal for Li-Ion battery powered devices....
