Overview: Ordering number:EN6106 Thick Film Hybrid IC STK740-441
3.3V/5A Single Output Separate Excitation Chopper Regulator
Overview
The STK740-441 is a separate-excitation step-down chopper regulator hybrid IC for the secondstage circuit and optimal as a 3.3V local power supply for use in logic circuit that includes both 5V and 3.3V systems. 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 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. Package Dimensions
unit:mm 4171-SIP12
[STK740-441] 37.0 4.5 25.5 0.5 25.5 2.9 1 2.54 12 0.5 11×2.54=27.94 Applications
• 3.3V local power supply for the logic circuit where both 5V and 3.3V systems are constructed togeter.
