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The UC1524, UC2524 and UC3524 incorporate on a single monolithic chip all the functions required for the construction of regulating power supplies, inverters or switching regulators. They can also be used as the control element for high-power-output applications. The UC1524 family was designed for switching regulators of either polarity, transformer-coupled dc-to-dc converters, transformerless voltage doublers and polarity converter applications employing fixed-frequency, pulse-width modulation techniques. The dual alternating outputs allow either single-ended or push-pull applications. Each device includes an on-chip reference, error amplifier, programmable oscillator, pulse-steering flip-flop, two uncommitted output transistors, a high-gain comparator, and current-limiting and shut-down circuitry. The UC1524 is characterized for operation over the full military temperature range of -55°C to +125°C. The UC2524 and UC3524 are designed for operation from -25°C to +85°C and 0° to +70°C, respectively.
Note 1: Over operating free-air temperature range unless otherwise noted. Note 2: All voltage values are with respect to the ground terminal,pin 8. Note 3: The reference regulator may be bypassed for operation from a fixed 5V supply by connecting the VCC and reference output pins both to the supply voltage. In this configuration the maximum supply voltage is 6V. Note 4: Consult packaging section of databook for thermal limitations and considerations of package.
UC2524 Features
• Complete PWM Power Control Circuitry • Uncommitted Outputs for Single-ended or Push-pull Applications • Low Standby Current.8mA Typical • Interchangeable with SG1524, SG2524 and SG3524, Respectively