1x/1.5x Auto-Adjust Charge Pump White LED Driver With LED Fault Detection

The PT4302 is a 2-channel 1x/1.5x auto-adjust Charge Pump White LED Driver with LED fault detection. Auto-adjust Charge Pump achieves high efficiency for Li-Ion battery supply; LED fault detection makes the PT4302 more efficient; few external components (two flying capacitors and two Filter capacitors at VIN and VOUT) make the PT4302 ideally suited for mobility application. The current through the LED is regulated from 3mA to 25mA in 3mA step by the En/Set pin, which is a digital Interface to enable/disable the chip and set the LED current. Built-in soft-start circuit prevents the inrush current from supply source during power on and 1x/1.5x mode decision. Thermal shutdown and current limiter prevent the PT4302 being damaged by the high-level current through it. Shutdown current less than 1uA makes the battery time longer. PT4302 is packaged with small size MSOP-10 and QFN-10. By China Resources Powtech (Shanghai) Co., Ltd
PT4302 's PackagesPT4302 's pdf datasheet

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PT4302 Application circuits
PT4302 circuits
This is one application circuit of PT4302,If you need more circuits,please download PT4302's pdf datasheet.

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