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Datasheet 2A 150KHz 40V Buck DC to DC converter XL1509 Rev 1 Features Wide to 40V Input Voltage Range ,5V,12V, and adjustable versions Output Adjustable from to 37V Maximum Duty Cycle 100% Minimum Drop Out Fixed 150KHz Switching Frequency 2A Constant Output Current Capability Internal Optimize Power Transistor High efficiency Excellent line and load regulation TTL shutdown capability ON/OFF pin with hysteresis function Built in thermal shutdown function Built in current limit function Built in second current limit function Available in SOP8 package Applications LCD Mo

2A 150KHz 40V Buck DC to DC Converter XL1509 Rev 2.3 www.xlsemi.com 3 Function Block EA 1.23V Reference G N D F e e d b a c k 3. V 1.23V EA COMP Oscillator 150KHz 3.3V Regulator Start Up Latch COMP2 COMP1 Driver

  Reference, Converter, Dc converter