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UC1524J Scheda tecnica(PDF) 1 Page - Texas Instruments |
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UC1524J Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 18 page www.ti.com FEATURES DESCRIPTION BLOCK DIAGRAM 15 7 6 16 VIN REFERENCE VREF +5V TO ALL INTERNAL RT CT OSC (RAMP) 3 OSC OUT Q Q R +5V 12 11 CA EA 13 14 CB EB 9 +5V 5 4 –SENSE +SENSE C L COMPENSATION 10k 1k 10 8 GROUND + – +5V E A 1 2 INV INPUT NI INPUT COMPARATOR SHUTDOWN UC1524 UC2524 UC3524 SLUS180E – NOVEMBER 1999 – REVISED OCTOBER 2005 ADVANCED REGULATING PULSE WIDTH MODULATORS • Complete PWM Power Control Circuitry The UC1524, UC2524 and UC3524 incorporate on a single monolithic chip all the functions required for the • Uncommitted Outputs for Single-Ended or construction of regulating power supplies, inverters or Push-Pull Applications switching regulators. They can also be used as the • Low Standby Current . . . 8 mA Typical control element for high-power-output applications. • Interchangeable With SG1524, SG2524 and The UC1524 family was designed for switching SG3524, Respectively 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. 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. Copyright © 1999–2005, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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