Intersil CA1524
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. 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.DESCRIPTION
A block diagram of the CA1524 series is shown in Figure 1. 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.FEATURES
● Complete PWM Power Control Circuitry● Separate Outputs for Single-Ended or Push-Pull Operation
● Line and Load Regulation . . . . . . . . . . . . . . . 0.2% (Typ)
● Internal Reference Supply with 1% (Max) Oscillator and Reference Voltage Variation Over Full Temperature Range
● Standby Current of Less Than 10mA
● Frequency of Operation Beyond 100kHz
● Variable-Output Dead Time of 0.5µs to 5µs
● Low VCE(sat) Over the Temperature Range
APPLICATIONS
● Positive and Negative Regulated Supplies● Dual-Output Regulators
● Flyback Converters
● DC-DC Transformer-Coupled Regulating Converters
● Single-Ended DC-DC Converters
● Variable Power Suppli...