TTP932

TTP932 1A LED Driver with internal switch Outline  TTP932 is a high efficiency , constant current , continuous mode inductive step-down converter, designed for driving constant current to high power（single or multiple）LED with only 4 external components. TTP932 operates from input supply between 5V and 33V and provides an externally adjustable output current of up to 1A.  The TTP932 is specifically designed with PFM control to enhance the efficiency up to 95% . The Output current can be modify by an external resister , and can adjusted , by applying an external control signal to the DIM pin , The DIM pin will accept a PWM waveform. Additionally , to ensure the system reliability , TTP932 is built-in with over temperature protection, and LED open-circuit short-circuit protection to protect system from being damaged. Characteristic  1A output current  Wide input voltage range：5V ～ 33V  High efficiency（up to 95%）  Internal NDMOS power switch  Single pin on／off and brightness control using PWM  Hysteretic PFM improves efficiency at light loads  With Thermal、Soft start、LED open-short detect protection  Only 4 External Components  Up to 1Mhz switching frequency  Typical 3% output current accuracy Applications  High power LED lighting  Automotive LED lighting  Low voltage industrial lighting  LED back-up lighting  Constant Current Source 2015/11/30 Page 1 of 21 Version：3.3 Package type TTP932 VIN SEN GND DIM SW SOT23-6：TTP932B TO252-5：TTP932C MSOP8（with Therm...