SG1524/SG2524/SG3524
REGULATING PULSE WIDTH MODULATOR
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 applications. The SG1524 is specified for operation
over the full military ambient temperature range of -55擄C to +125擄C, the
SG2524 for -25擄C to +85擄C, and the SG3524 is designed for commercial
applications of 0擄C to +70擄C.
FEATURES
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8V to 40V operation
5V reference
Reference line and load regulation of 0.4%
Reference temperature coefficient < 鹵 1%
100Hz to 300KHz oscillator range
Excellent external sync capability
Dual 50mA output transistors
Current limit circuitry
Complete PWM power control circuitry
Single ended or push-pull outputs
Total supply current less than 10mA
HIGH RELIABILITY FEATURES - SG1524
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Available to MIL-STD-883B and DESC SMD
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MIL-M-38510/12601BEA - JAN1524J
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Radiation data available
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LMI level "S" processing available
BLOCK DIAGRAM
4/90 Rev 1.1 2/94
Copyright
漏
1994
1
11861 Western Avenue
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Garden Grove, CA 92841
(714) 898-8121
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FAX: (714) 893-2570
L
INFINITY
Microelectronics Inc.
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