SG2524, SG3524 combine in a single monolithic power supply suppies inverter switching regulator for all the functions required to build specifications. They can also be used as control elements for high power output applications. The SG3524 family is designed for switching regulators, transformer either polarity coupled DC-DC converters, transformer voltage doublers and polarity converter applications using fixed frequency, pulse width modulation techniques. Dual alternate outputs allow single-ended or push-pull applications for each device, including a ship reference, error amplifier, programmable oscillator, pulse steering flip-flop, two uncommitted output transistors, a high gain comparator, and currentlimiting and off circuit breaker. SG2524/3524 is a fixed frequency pulsewith modulation voltage regulator control circuit. The programmed frequency regulator operates with a timing resistor (RT) and a timing capacitor (CT). RT establishes a constant charge current for CT. This results in a linearity in the CT, which is fed by the voltage ramp compared to the output pulses which are linearly controlled by the width of the error amplifier. The SG2524/3524 is included in the SG2524/3524 as an on-board 5V regulated reference as well as powering the SG2524/3524's internal control circuitry and also useful in providing external support functions. This internal resistor divider provides a reference to the common-mode range of the error amplifier or an external reference available for use by reducing the external reference voltage. The power supply output is the second resistor divider network to detect the feedback signal of the Singyes error amplifier. The amplifier's output voltage is then compared to the CT's linear ramp voltage. A modulated pulse of high gain is then directed to the appropriate output through a transistor (QA or QB) by the pulsesteering flip-flop, which is synchronously switching the output of the oscillator. The oscillator output pulse also acts as a blanking pulse to ensure that both outputs are simultaneously never in transition time. The width of the blanking pulse controls the CT value. The outputs may be suitable for push-pull configurations where their frequency is half the frequency of the base oscillator, or in parallel single-ended applications which equals the frequency of the oscillator. The output of the error amplifier is now more common with input limiting and shutdown circuits that can cover both input signals. This common point may also be used externally to control gain, or compensation, error amplifiers, or to provide additional control regulators.