Overview: Ordering number:EN*6107 Thick Film Hybrid IC STK740-470
5V/5A Single Output Separate Excitation Chopper Regulator
Preliminary Overview
The STK740-470 is a separate-excitation step-down chopper regulator hybrid IC for the secondstage circuit. This IC incorporates in the package all the necessary circuits for a chopper regulator including power switch, error amplifier, soft start, shutdown type output short protection, low-voltage malfunction prevention, on/off, and snubber circuits. Therefore, external ponents required are input and output capacitors and a choke coil only and this allows this IC to be used to construct a large-current (5A) chopper regulator as if a 3-pin regulator were used. DC8V to 18V input voltage can be handled and up to 5A of output current is supported. Package Dimensions
unit:mm 4170-SIP28
[STK740-470] 46.6 41.2 8.5 12.7 1 2.54 (6.63) 4.0 12 0.5 1.0 3.6 25.5 0.4 2.9 Applications
• Local power supply for the equipment of which input rating is DC9V to 15V. 11×2.54=27.
