GENERAL DESCRIPTION
For each LED string, the current is adjustable to drive up to 240mA. The LD7889 incorporates 4 individual current regulator channels to give accurate driving current for each LED string. The string-to-string tolerance is set within ±2%. PWM input pin controls LED brightness from PWM control signals. The other features include LED short and open protection, cycle by cycle current limit, and thermal shutdown. FEATURES
z Input Voltage range: 4.5V to 36V z Drives up to 4 strings in parallel, up to 240mA per string z Time-shift PWM dimming control z External PWM dimming control z LED short circuit protection z LED open string protection z MOSFET over-c
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