MEL7136series_E4.0微盟原厂规格书.pdf

MEL7136A/MEL7136B Linear Adjustable Constant Current LED Driver MEL7136A/MEL7136B General Description Features The MEL7136A is a constant current regulator  MEL7136B is only a controller , and must be for driving LEDs with low quiescent current and low connected to an external NMOS. dropout voltage. The current is adjustable from  Sink current:10mA to1A adjustable with an external 10mA to1A with an external resistor. resistor The MEL7136B is only a controller , and must be  Current and voltage range extendable by adding an connected to an external NMOS. MEL7136B is an external NMOS or NPN transistor external transistor, is suitable for applications  Power supply voltage: 2.7-18V requiring a high output current .  Low drop out voltage: 50mV@1A Only one external resistor is required to achieve  Low quiescent current: 80uA a constant current LED driver. Soft start , thermal  Thermal Shutdown protection：165℃ protection and low voltage protection are also  Soft start 5 provided.  Low voltage protection: 2.5V 0 3 The driver pin EXT is provided for current and  Package: MEL7136A: SOT89-5, ESOP8 voltage extension. Adding an external NMOS or  3 MEL7136B: SOT23-5 1 NPN transistor to this pin can extend current and 5 voltage range. 3 2 8 Typical Application Selection Guide 3  Power Led driver and controller 1 :