IS31LT3957A controller equivalent, high voltage led lighting controller.
* Wide high voltage input range: 5V to 75V
* Supports boost, buck-boost, SEPIC and buck
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* ±2% output current accuracy
* Adjustable operating freq.
An external resistor senses the high side output current of the LED string. A high side sense is the most flexible curr.
The IS31LT3957A is a current mode PWM controller designed to drive a low side external NMOS FET for wide input/output voltage range and high LED current applications. An external resistor senses the high side output current of the LED string. A high .
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