Step up / down / inverting switching regulator with adjustable output voltage. The MC34063A series is a monolithic control circuit containing the primary functions required for DC to DC converters.

• Output voltage 1.25V to 40V
• Single output
• Output current 1.5A
• Supply voltage 3V to 40V
• Switching frequency 100kHz
• 8-SOIC case

Fixed frequency pulse-width-modulation voltage regulation circuit from ST. The monolithic IC contains all the functions required to control a regulating power supply, inverter or switching regulator.

The device includes programmable oscillator, pulse-steering flip, a high-gain comparator, start-up circuit and current limiting circuitry.

• Low standby current, 8mA typical
• Operation up to 300KHz
• Supplied in a DIL-16 package