Details, datasheet, quote on part number: SG3524
PartSG3524
CategoryMultimedia => Audio => Amplifiers => Power Amplifiers => Stereo/Quad Channel
TitleStereo/Quad Channel
DescriptionSG3524; SMPS Control Circuit
CompanyPhilips Semiconductors (Acquired by NXP)
DatasheetDownload SG3524 datasheet
Cross ref.Similar parts: MAX1703EEE, MAX1703ESE, MAX1703ESE+, MAX1703ESE+T, MAX1703ESE-T, LTC1430ACS, LTC1430CN, LTC1430CS, LTC1430CS#PBF, LTC3830EGN
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Features, Applications

DESCRIPTION

This monolithic integrated circuit contains all the control circuitry for a regulating power supply inverter or switching regulator. Included 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 to +70C.

INVERT INPUT 1 NON-INV INPUT 2 OSC OUTPUT 3 (+)CL SENSE 4 ()CL SENSE 7 16 VREF 15 VIN 14 EMITTER B 13 COLLECTOR B 12 COLLECTOR A 11 EMITTER A 10 SHUTDOWN 9 TOP VIEW COMPENSATION

FEATURES

Complete PWM power control circuitry Single ended or push-pull outputs Line and load regulation 0.2% 1% maximum temperature variation Total supply current is less than 10mA Operation beyond 100kHz

DESCRIPTION 16-Pin Plastic Dual In-Line Package (DIP) 16-Pin Ceramic Dual In-Line Package (CERDIP) 16-Pin Small Outline (SO) Package

VREF 16 VIN 15 REF REG +5V TO ALL INTERNAL CIRCUITRY +5V OSCILLATOR 3 OUTPUT FLIP FLOP

SYMBOL VIN IOUT IREF PD Input voltage Output current (each output) Reference output current Oscillator charging current Power dissipation Package limitation Derate above 25C TA TSTG Operating temperature range Storage temperature range +150 mW mW/C C PARAMETER RATING UNIT V mA

+70C, VIN=20V, and f=20kHz, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS LIMITS Min VREF=0, TA=25C Over operating temperature range TA=25C CT=0.001 F, RT=2k RT and CT constant 40V, TA=25C Over operating temperature range Pin TA=25C CT=0.01 F, TA=25C % each output "ON" Zero duty cycle Maximum duty cycle Pin 9=2V with error amplifier set for maximum out, TA=25C Typ Max 30 50 UNIT

VOUT Output voltage Line regulation Load regulation Ripple rejection ISC Short circuit current limit Temperature stability Long-term stability mA % mV/kHz kHz V dB MHz A mV mV/C V

fMAX Maximum frequency Initial accuracy Voltage stability Temperature stability Output amplitude Output pulse width

VOS IBIAS VCM CMRR BW VOUT Input offset voltage Input bias current Open-loop voltage gain Common-mode voltage Common-mode rejection ratio Small-signal bandwidth Output voltage Duty cycle Input threshold Input threshold IBIAS Input bias current Sense voltage Sense voltage T.C. VCM Common-mode voltage

to +70C, VIN = 20V, and = 20kHz, unless otherwise specified. SYMBOL PARAMETER TEST CONDITIONS LIMITS Min RC=2k, TA=25C Typ Max UNIT

Collector-emitter voltage (breakdown) Collector-leakage current Saturation voltage Emitter output voltage tR tF Rise time Fall time (excluding oscillator charging current, error and current limit dividers, and with outputs open) V s

An internal series regulator provides a nominal 5V output which is used both to generate a reference voltage and is the regulated source for all the internal timing and controlling circuitry. This regulator may be bypassed for operation from a fixed 5V supply by

connecting Pins 15 and 16 together to the input voltage. In this configuration, the maximum input voltage is 6.0V. This reference regulator may be used a 5V source for other circuitry. It will provide 50mA of current itself and can easily be expanded to higher currents with an external PNP as shown in Figure 3.

IS OSC OUT VREF 2k 1W RAMP VIN 2k 2 N.I. INPUT 1 INV. INPUT 9 COMP SHUT DOWN 4 SG3524 CURRENT LIMIT 2k 1W OUTPUTS


 

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SG3524D
SG3524F
SG3524N
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