SLUS180E – NOVEMBER 1999 – REVISED OCTOBER 2005
ADVANCED REGULATING PULSE WIDTH MODULATORS
• Complete PWM Power Control Circuitry
• Uncommitted Outputs for Single-Ended or
• Low Standby Current . . . 8 mA Typical
• Interchangeable With SG1524, SG2524 and
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°C to 70°C, respectively.
INV INPUT 1
NI INPUT 2
+5V TO ALL
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas
Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.
PRODUCTION DATA information is current as of publication date.
Products conform to specifications per the terms of the Texas
Instruments standard warranty. Production processing does not
necessarily include testing of all parameters.
Copyright © 1999–2005, Texas Instruments Incorporated