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UC1524 Scheda tecnica(PDF) 1 Page - Texas Instruments |
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UC1524 Scheda tecnica(HTML) 1 Page - Texas Instruments |
1 / 8 page UC1524 UC2524 UC3524 15 7 6 16 V IN REFERENCE REGULATOR V REF +5V TO ALL INTERNAL CIRCUITRY R T C T OSC (RAMP) 3 OSC OUT Q Q R +5V 12 11 C A E A 13 14 C B E B 9 +5V 5 4 –SENSE +SENSE CL COMPENSATION 10k 1k 10 8 GROUND (SUBSTRATE) +5V EA 1 2 INV INPUT NI INPUT COMPARATOR SHUTDOWN BLOCK DIAGRAM DESCRIPTION The UC1524, UC2524 and UC3524 incorporate on a single monolithic chip all the functions required for the construction of regulating power supplies, in- verters 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 convert- ers, transformerless voltage doublers and polarity converter applications em- ploying 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 oscilla- tor, 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. Advanced Regulating Pulse Width Modulators 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 SLUS180D - NOVEMBER 1999 - REVISED AUGUST 2002 |
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