SI-8008TM

SI-8008TM DC-to-DC Step-Down Converter Features and Benefits ▪ 1.5 A output current supplied in a small power surface mount package ▪ High efficiency: 81% at VIN= 15 V, IO= 0.5 A,VO= 5 V ▪ Requires only six external components (optional soft start requires an additional capacitor) ▪ Oscillation circuit built-in (frequency 300 kHz typical ▪ Constant current type overcurrent protection circuit and an overheating protection circuit built in ▪ Soft start function built-in (can be implemented as an ON/OFF function, output OFF state at low level) ▪ Low consumption current during output OFF state Package: TO252-5 (SC-63) Description The SI-8008TM DC voltage regulator is a DC-to-DC buck convertor that attains an oscillation frequency of 300 kHz, and has an integrated miniaturized choke coil, allowing it to serve as a small, high efficiency power supply in a compact TO252-5 (SC-63) package. The switching regulator function realizes a high efficiency switching regulator operation without adjustment, requiring only six external support components, and an optional capacitor for soft start operation and an optional transistor for on/off control. The SI-8008TM includes overcurrent and overheating protection circuits. Applications include: ▪ DVD recorder ▪ FPD TV ▪ Telecommunications equipment ▪ Office automation equipment, such as printers ▪ On-board local power supply ▪ Output voltage regulator for second stage of SMPS (switched mode power supply) Not to scale Functional Block Diagram...