SG3524N STMicroelectronics, SG3524N Datasheet

IC PWM REGULATING 16-DIP

SG3524N

Manufacturer Part Number
SG3524N
Description
IC PWM REGULATING 16-DIP
Manufacturer
STMicroelectronics
Type
Pulse Width Modulator Controllerr
Datasheets

Specifications of SG3524N

Pwm Type
Voltage Mode
Number Of Outputs
1
Frequency - Max
300kHz
Duty Cycle
45%
Voltage - Supply
8 V ~ 40 V
Buck
No
Boost
No
Flyback
Yes
Inverting
No
Doubler
Yes
Divider
No
Cuk
No
Isolated
No
Operating Temperature
0°C ~ 70°C
Package / Case
16-DIP (0.300", 7.62mm)
Frequency-max
300kHz
Topology
Push-Pull
Output Voltage
18 V
Output Current
100 mA
Switching Frequency
300 KHz
Duty Cycle (max)
45 %
Maximum Operating Temperature
+ 70 C
Minimum Operating Temperature
0 C
Fall Time
100 ns
Mounting Style
Through Hole
Rise Time
200 ns
Synchronous Pin
No
Common Mode Rejection Ratio
70
Current, Input Bias
2 μA
Current, Output
100 mA
Current, Supply
8 mA
Frequency, Oscillator
300 kHz
Package Type
DIP-16
Power Dissipation
1000 mW
Regulation, Line
10 mV
Regulation, Load
20 mV
Temperature, Operating, Range
0 to +70 °C
Time, Fall
0.1 μs
Time, Rise
0.2 μs
Voltage, Gain
80 dB
Voltage, Input
20 V
Voltage, Offset
2 mV
Voltage, Output
5 V
Voltage, Supply
8 to 40 V
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Other names
497-2992-5

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This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice.
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
employing fixed-frequency, pulse-width modula-
tion techniques. The dual alternating outputs al-
lows either single-ended or push-pull applications.
BLOCK DIAGRAM
July 2000
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
and
®
polarity
converter
REGULATING PULSE WIDTH MODULATORS
applications
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.
ORDERING NUMBERS: SG3524N (DIP16)
DIP16
SG3524P (SO16)
SG3524
SO16
1/9

Related parts for SG3524N

SG3524N Summary of contents

Page 1

... BLOCK DIAGRAM July 2000 This is advanced information on a new product now in development or undergoing evaluation. Details are subject to change without notice. DIP16 ORDERING NUMBERS: SG3524N (DIP16) Each device includes an on-ship reference, error applications amplifier, programmable oscillator, pulse-steering flip flop, two uncommitted output transistors, a high-gain comparator, and current-limiting and shut-down circuitry ...

Page 2

SG3524 ABSOLUTE MAXIMUM RATINGS Symbol V Supply Voltage IN I Collector Output Current C I Reference Output Current R I Current Through Total Power Dissipation at T tot T Storage Temperature Range stg T Operating Ambient Temperature ...

Page 3

ELECTRICAL CHARACTERISTICS (unless otherwise stated, these specifications apply for 20V, and f = 20KHz). IN Symbol Parameter REFERENCE SECTION V Output Voltage REF V Line Regulation REF V Load Regulation REF Ripple ...

Page 4

SG3524 Figure 1: Open-loop Voltage Amplification of Error Amplifier vs. Frequency Figure 3: Output Dead Time vs. Timing Capacitance Value. Figure 5: Open Loop Test Circuit. 4/9 Figure 2: Oscillator Frequency vs. Timing Components. Figure 4: Output Saturation Voltage vs. ...

Page 5

PRINCIPLES OF OPERATION The SG3524 is a fixed frequency pulse-with- modulation voltage regulator control circuit. The regulator operates at a frequency that is pro- grammed by one timing resistor ( established a constant ing capacitor ( ...

Page 6

SG3524 Figure 7: Flyback Converter Circuit. Figure 8: PUSH-PULL Transformer-coupled circuit. 6/9 ...

Page 7

DIM. MIN. TYP. MAX. MIN. a1 0.51 0.020 B 0.77 1.65 0.030 b 0 8.5 e 2.54 e3 17.78 F 7.1 I 5.1 L 3.3 Z 1.27 inch MECHANICAL DATA TYP. MAX. 0.065 0.020 ...

Page 8

SG3524 mm DIM. MIN. TYP. MAX. A 1.75 a1 0.1 0.25 0.004 a2 1.6 b 0.35 0.46 0.014 b1 0.19 0.25 0.007 C 0.5 c1 45˚ (typ.) D (1) 9.8 10 0.386 E 5.8 6.2 0.228 e 1.27 e3 8.89 ...

Page 9

... This publication supersedes and replaces all information previously supplied. STMicroelectronics products are not authorized for use as critical components in life support devices or systems without express written approval of STMicroelectronics. © 2000 STMicroelectronics – Printed in Italy – All Rights Reserved Australia - Brazil - China - Finland - France - Germany - Hong Kong - India - Italy - Japan - Malaysia - Malta - Morocco - Singapore - Spain - Sweden - Switzerland - United Kingdom - U ...

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