The CA1524 and CA3524 are silicon monolithic integrated
circuits designed to provide all the control circuitry for use in
a broad range of switching regulator circuits.
The CA1524 and CA3524 have all the features of the industry
types SG1524, SG2524, and SG3524, respectively. A
block diagram of the CA1524 series is shown in Figure 1.
The circuit includes a zener voltage reference, transconductance
error amplifier, precision R-C oscillator, pulse-width
modulator, pulse-steering flip-flop, dual alternating output
switches, and current-limiting and shutdown circuitry. This
device can be used for switching regulators of either polarity,
transformer-coupled dc-dc converter, transformerless voltage
doublers, dc-ac power inverters, highly efficient variable
power supplies, and polarity converter, as well as other
power-control applications.