®
SG2524
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
DIP16
SO16
DESCRIPTION
The SG2524, and SG3524 incorporate on a sin-
gle 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 applica-
tions. The SG3524 family was designed for
switching regulators of either polarity, trans-
former-coupled dc-to-dc converters, transformer-
less voltage doublers and polarity converter appli-
cations employing fixed-frequency, pulse-width
modulation techniques. The dual alternating out-
puts allows either single-ended or push-pull appli-
BLOCK DIAGRAM
ORDERING NUMBERS:
SG2524N (DIP16)
SG3524N (DIP16)
SG2524P (SO16)
SG3524P (SO16)
cations. Each device includes an on-ship refer-
ence, error amplifier, programmable oscillator,
pulse-steering flip flop, two uncommitted output
transistors, a high-gain comparator, and current-
limiting and shut-down circuitry.
June 2000
1/9
This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
STMICROELECTRONICS [ STMICROELECTRONICS ]
