IRIS4015(K)Block Diagram 4 Vcc 1 D START O.V.P LATCH DRIVE REG. 2 S - Vth(1) OSCILLATOR T.S.D + 5 Comp.1 OCP/ FB - Vth(2) + Comp.2 3 Ground Pin # S y m b o l Description L e a d A s s i g n m e n t s 1 S M O S F E T S o u r c e t e r m i n a l 2 G r o u n d Ground terminal 3 D M O S F E T D r a i n t e r m i n a l 4 V c c Control circuit supply voltage 1 2 3 4 5 Overcurrent detection, and Voltage mode control 5 O C P / F B feedback signal Other Functions O.V.P. – Overvoltage Protection Circuit T.S.D. – Thermal Shutdown Circuit 5/4/2001 4 www.irf.com