SG3524 Philips Semiconductors, SG3524 Datasheet
SG3524
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SG3524 Summary of contents
Page 1
... This device can be used for switching regulators of either polarity, transformer-coupled DC-to-DC converters, transformerless voltage doublers and polarity converters, as well as other power control applications. The SG3524 is designed for commercial applications +70 C. FEATURES Complete PWM power control circuitry Single ended or push-pull outputs Line and load regulation of 0 ...
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... V = =0dB each output “ON” Zero duty cycle Maximum duty cycle Pin 9=2V with error amplifier set for maximum out Product specification SG3524 RATING UNIT 40 V 100 1000 +70 C -65 to +150 C LIMITS UNIT UNIT Min Typ Max 4.6 5.0 5 ...
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... PNP as shown in Figure 3. Q1 SG3524 100 V REF 15 16 REFERENCE SECTION + SG3524 COMP INV. RAMP N.I. INPUT SHUT INPUT DOWN 2k C 10k T 2k Figure 4. Test Circuit 3 Product specification SG3524 LIMITS UNIT UNIT Min Typ Max 40 0 0.2 0 1.0A L DEPENDING ON CHOICE FOR Q1 SL00176 OUTPUTS ...
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... External Synchronization desired to synchronize the SG3524 to an external clock, a pulse of +3V may be applied to the oscillator output terminal with R C set slightly greater than the clock period ...
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... Figure 8. The error amplifier may also be used in fixed duty cycle applications by using the unity gain configuration shown in the open-loop test circuit. Current Limiting The current limiting circuitry of the SG3524 is shown in Figure 9. By matching the base-emitter voltages of Q1 and Q2, and assuming a negligible voltage drop across R : ...