SG2524 Microsemi Corporation, SG2524 Datasheet

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SG2524

Manufacturer Part Number
SG2524
Description
Manufacturer
Microsemi Corporation
Datasheet

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4/90 Rev 1.1 2/94
Copyright
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°C to +125°C, the
SG2524 for -25°C to +85°C, and the SG3524 is designed for commercial
applications of 0°C to +70°C.
BLOCK DIAGRAM
1994
REGULATING PULSE WIDTH MODULATOR
1
FEATURES
HIGH RELIABILITY FEATURES - SG1524
8V to 40V operation
5V reference
Reference line and load regulation of 0.4%
Reference temperature coefficient < ± 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
Available to MIL-STD-883B and DESC SMD
MIL-M-38510/12601BEA - JAN1524J
Radiation data available
LMI level "S" processing available
SG1524/SG2524/SG3524
11861 Western Avenue
L
INFINITY Microelectronics Inc.
(714) 898-8121
Garden Grove, CA 92841
FAX: (714) 893-2570

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SG2524 Summary of contents

Page 1

... 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°C to +125°C, the SG2524 for -25°C to +85°C, and the SG3524 is designed for commercial applications of 0°C to +70°C. BLOCK DIAGRAM 4/90 Rev 1 ...

Page 2

... SG3524 Min. Typ. Max. Min. Typ. Max. 4.80 5.00 5.20 4.60 5. 4.80 5.20 4. 150 INFINITY Microelectronics Inc. 11861 Western Avenue (714) 898-8121 + ( 100Hz to 300KHz 1.8K to 100K 1nF to 1 125 C - 125 C, SG2524 with Units 5. 5.40 V 150 mA Garden Grove, CA 92841 FAX: (714) 893-2570 ...

Page 3

... 40V 0.5V COMP V = 3.6V COMP (Note MIN T MAX 40V 50mA 50mA 40V SG1524/SG2524/SG3524 SG1524/2524 SG3524 Min. Typ. Max. Min. Typ. Max 0.1 1 0.1 1 200 400 200 400 3 3.8 3 3.8 0.6 1 1.2 0.6 1 1.2 3.2 3.2 0.3 1.5 0.3 1.5 0 ...

Page 4

... Since C •C ; where works best when all devices are close together SG1524/SG2524/SG3524 and C values that cause it to free and C for the desired frequency. Leave T T pins on the slaves open, connect the C ...

Page 5

... SG1524's internal flip-flop divides the frequency switches the P.W.M. signal from one output to the other. Current limiting is done here in the primary so that the pulse width will be reduced should transformer saturation occur. 5 SG1524/SG2524/SG3524 L INFINITY Microelectronics Inc. 11861 Western Avenue Garden Grove, CA 92841 (714) 898-8121 ...

Page 6

... Connection Diagram Temperature Range - 125 C - 125 C - 125 C OSC. OUTPUT - 125 OSC. OUTPUT +C.L. SENSE -C.L. SENSE - 125 C 1. N.C. - 125 REF 3. INV. INPUT 4. N.I. INPUT 5. OSC. OUTPUT 6. + C.L. SENSE 7. - C.L. SENSE 10. GROUND 6 SG1524/SG2524/SG3524 INV. INPUT REF N.I. INPUT + +C.L. SENSE -C.L. SENSE ...

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