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SG3524

NXP
Part Number SG3524
Manufacturer NXP
Description SMPS control circuit
Published Apr 8, 2005
Detailed Description Philips Semiconductors Product specification SMPS control circuit SG3524 DESCRIPTION This monolithic integrated circ...
Datasheet PDF File SG3524 PDF File

SG3524
SG3524

Overview
Philips Semiconductors Product specification SMPS control circuit SG3524 DESCRIPTION This monolithic integrated circuit contains all the control circuitry for a regulating power supply inverter or switching regulator.
Included in a 16-pin dual-in-line package is the voltage reference, error amplifier, oscillator, pulse-width modulator, pulse steering flip-flop, dual alternating output switches and current-limiting and shut-down circuitry.
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 of 0°C to +70°C.
PIN CONFIGURATION D, F, N Packages INVERT INPUT 1 NON-INV INPUT 2 OSC OUTPUT 3 (+)CL SENSE 4 (–)CL SENSE 5 RT CT 6 7 16 VREF 15 VIN 14 EMITTER B 13 COLLECTOR B 12 COLLECTOR A 11 EMITTER A 10 SHUTDOWN 9 TOP VIEW COMPENSATION FEATURES GROUND 8 • Complete PWM power control circuitry • Single ended or push-pull outputs • Line and load regulation of 0.
2% • 1% maximum temperature variation • Total supply current is less than 10mA • Operation beyond 100kHz ORDERING INFORMATION DESCRIPTION 16-Pin Plastic Dual In-Line Package (DIP) 16-Pin Ceramic Dual In-Line Package (CERDIP) 16-Pin Small Outline (SO) Package SL00174 Figure 1.
Pin Configuration TEMPERATURE RANGE 0 to +70°C 0 to +70°C 0 to +70°C ORDER CODE SG3524N SG3524F SG3524D DWG # SOT38-4 0582B SOT109-1 BLOCK DIAGRAM VREF 16 VIN 15 REF REG +5V TO ALL INTERNAL CIRCUITRY +5V OSCILLATOR 3 OUTPUT FLIP FLOP 12 NOR 11 CA +5V RT 6 CT 7 (RAMP) OSC +5V + COMPARATOR – +5V ERROR – AMP + 1k 10 SHUTDOWN 10k 9 COMPENSATION +5V + CL – 4 +SENSE NOR 13 CB 14 E B INV INPUT 1 N.
I.
INPUT 2 GROUND 8 (SUBSTRATE) 5 –SENSE SL00175 Figure 2.
Block Diagram 1994 Aug 31 1 853-0891 13721 Philips Semiconductors Product specification SMPS control circuit SG3524 ABSOLUTE MAXIMUM RATINGS SYMBOL VIN IOUT IREF PD...


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