LN2140

LN2140 40V 3A Boost LED Constant Current Driver  General Description  Features The LN2140 regulator is fixed frequency PWM boost LED constant current driver, capable of driving series 1W/3W LED units with excellent line and load regulation. The LN2140 regulator includes internal frequency compensation and fixed-frequency oscillator. An over current protection function is built inside. So the regulator requires a minimum number of external components to work. The PWM control circuit is able to adjust the duty ratio linearly from 0 to 90%. The LN2140 is available in SOP8 packages.  Package  EN shutdown with PWM dimming function  Internal optimize power mosfet  Soft-start function  Thermal shutdown function  Current limit and short protect function  Pb-Free Package  Application  LED Lighting  Boost constant current driver  Monitor LED Back lighting  SOP8  Application Information VIN VOUT LN2140CH1R FB GATE Vin CS EN PGND VOVP GND  ...