SG3524 Datasheet, PDF (1/9 Pages) NXP Semiconductors – SMPS control circuit

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SG3524
REGULATING PULSE WIDTH MODULATORS
COMPLETE PWM POWER CONTROL CIR-
CUITRY
UNCOMMITTED OUTPUTS FOR SINGLE-
ENDED OR PUSH PULL APPLICATIONS
LOW STANDBY CURRENT 8mA TYPICAL
OPERATION UP TO 300KHz
1% MAXIMUM TEMPERATURE VARIATION
OF REFERENCE VOLTAGE
DESCRIPTION
The SG3524 incorporates on a single monolithic
chip all the function required for the construction
of regulating power suppies inverters or switching
regulators. They can also be used as the control
element for high power-output applications. The
SG3524 family was designed for switching regu-
lators of either polarity, transformer-coupled dc-
to-dc converters, transformerless voltage dou-
blers and polarity converter applications
employing fixed-frequency, pulse-width modula-
tion techniques. The dual alternating outputs al-
lows either single-ended or push-pull applications.
BLOCK DIAGRAM
DIP16
SO16
ORDERING NUMBERS: SG3524N (DIP16)
SG3524P (SO16)
Each device includes an on-ship reference, error
amplifier, programmable oscillator, pulse-steering
flip flop, two uncommitted output transistors, a
high-gain comparator, and current-limiting and
shut-down circuitry.
July 2000
1/9
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.