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UC3524

Texas Instruments
Part Number UC3524
Manufacturer Texas Instruments
Description ADVANCED REGULATING PULSE WIDTH MODULATORS
Published Oct 1, 2019
Detailed Description www.ti.com UC1524 UC2524 UC3524 SLUS180E – NOVEMBER 1999 – REVISED OCTOBER 2005 ADVANCED REGULATING PULSE WIDTH MODULA...
Datasheet PDF File UC3524 PDF File

UC3524
UC3524

Overview
www.
ti.
com UC1524 UC2524 UC3524 SLUS180E – NOVEMBER 1999 – REVISED OCTOBER 2005 ADVANCED REGULATING PULSE WIDTH MODULATORS FEATURES • Complete PWM Power Control Circuitry • Uncommitted Outputs for Single-Ended or Push-Pull Applications • Low Standby Current .
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8 mA Typical • Interchangeable With SG1524, SG2524 and SG3524, Respectively DESCRIPTION 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 fixedfrequency, 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.
BLOCK DIAGRAM VREF 16 OSC OUT 3 VIN 15 RT 6 CT 7 (RAMP) INV INPUT 1 NI INPUT 2 GROUND 8 REFERENCE OSC +5V Q RQ +5V TO ALL INTERNAL +5V – EA + COMPARATOR +5V 10k 1k 10 SHUTDOWN 9 COMPENSATION 12 CA 11 EA 13 CB 14 EB 5 –SENSE CL 4 +SENSE 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.
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