524 CA2
October 2000
NO IS A T DUC PRO
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CA1524, CA2524 CA3524
Regulating Pulse Width Modulator
Description
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...