Overview
The STK730C is a chopper type step-down dedicated 5 V single output regulator that uses a power MOSFET as its switching element and a Schottky barrier diode (SBD) as its flywheel diode.

Features
• IMST substrate (insulated metal substrate technology)
• Efficiency improved (by 10%) by the adoption of
   MOSFET and SBD technology.
• An auxiliary drive power supply is no longer required
   due to the development of a unique NMOS FET drive
   circuit. This means that the STK730C can be used
   with a single power supply, thus allowing
   simplification of the input system.
• Built-in reverse going linear overload characteristic
   curve overcurrent protection circuit
• Ground line handling is eased even in multi-output
   power supply structures due to placement of the
   overcurrent detection resistor on the plus line.
• The STK730C’s separate excitation oscillator
   structure provides high stability in the switching
   frequency.
• The STK730C’s switching operating frequency is set
   at 125 kHz, which minimizes beating when used in a
   multiple output structure with STK731 and STK733
   type products.

Applications
• Power supplies in printers and other office equipment
• Power supplies in robots and other factory automation
   related equipment
• Power supplies in VCRs and other consumer products
• Secondary side regulators in switching power supplies