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SG3524 の電気的特性と機能

SG3524のメーカーはSTMicroelectronicsです、この部品の機能は「REGULATING PULSE」です。


製品の詳細 ( Datasheet PDF )

部品番号 SG3524
部品説明 REGULATING PULSE
メーカ STMicroelectronics
ロゴ STMicroelectronics ロゴ 




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SG3524 Datasheet, SG3524 PDF,ピン配置, 機能
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
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
DIP16
SO16
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.

1 Page





SG3524 pdf, ピン配列
SG2524 - SG3524
ELECTRICAL CHARACTERISTICS (unless otherwise stated, these specifications apply for Tj = -25 to
+85°C for the SG2524, and 0 to 70°C for the SG3524, VIN = 20V, and f = 20KHz).
Symbol
Parameter
Test Condition
REFERENCE SECTION
VREF
VREF
VREF
Output Voltage
Line Regulation
Load Regulation
Ripple Rejection
Short Circuit Current
Limit
VREF/T Temperature Stability
VREF Long Term Stability
OSCILLATOR SECTION
fMAX Maximum Frequency
Initial Accuracy
Voltage Stability
f/T Temperature Stability
Output Amplitude
Output Pulse Width
ERROR AMPLIFIER SECTION
VOS Input Offset Voltage
Ib Input Bias Current
GV Open Loop Voltage Gain
CMV Common Mode Voltage
CMR Common Mode Rejection
B Small Signal Bandwidth
VO Output Voltage
COMPARATOR SECTION
Duty-cycle
VIT Input Threshold
Ib Input Bias Current
CURRENT LIMITING SECTION
Sense Voltage
Sense Voltage T.C.
CMV Common Mode Voltage
OUTPUT SECTION(each output)
Collector-emitter Voltage
Collector Leackage Curr.
Saturation Voltage
Emitter Output Voltage
tr
tf
Iq (*)
Rise Time
Fall Time
Total Standby Current
VIN = 8 to 40V
IL = 0 to 20mA
f = 120Hz, Tj = 25°C
VREF = 0, Tj = 25°C
Over Operating
Temperature range
Tj = 125°C, t = 1000Hrs
CT = 0.001µF, RT = 2K
RT and CT Constant
VIN = 8 to 40V, Tj = 25°C
Over Operating
Temperature Range
Pin 3, Tj = 25°C
CT = 0.01µF, Tj = 25°C
VCM = 2.5V
Tj = 25°C
Tj = 25°C
AV = 0dB, Tj = 25°C
Tj = 25°C
% Each Output On
Zero Duty-cycle
Maximum Duty-cycle
Pin 9 = 2V with Error
Amp. Set for Max. Out.
Tj = 25°C
VCE = 40V
IC = 50mA
VIN = 20V
RC = 2K, Tj = 25°C
RC = 2K, Tj = 25°C
VIN = 40V
SG2524
Min. Typ. Max.
4.8 5 5.2
10 20
20 50
66
100
0.3 1
20
300
5
1
2
3.5
0.5
0.5 5
2 10
72 80
1.8 3.4
70
3
0.5 3.8
0 45
1
3.5
1
190 200 210
0.2
–1
1
40
0.1 50
12
17 18
0.2
0.1
8 10
SG3524
Min. Typ. Max.
4.6 5 5.4
10 30
20 50
66
100
0.3 1
20
300
5
1
2
3.5
0.5
2 10
2 10
60 80
1.8 3.4
70
3
0.5 3.8
0 45
1
3.5
1
180 200 220
0.2
–1
1
40
0.1 50
12
17 18
0.2
0.1
8 10
Unit
V
mV
mV
dB
mA
%
mV
KHz
%
%
%
V
µs
mV
µA
dB
V
dB
MHz
V
%
V
V
µA
mV
mV/°C
V
µA
V
V
µs
µs
mA
(*) Excluding oscillator charging current, error and current limit dividers, and with outputs open.
3/9


3Pages


SG3524 電子部品, 半導体
SG2524 - SG3524
Figure 7: Flyback Converter Circuit.
Figure 8: PUSH-PULL Transformer-coupled circuit.
6/9

6 Page



ページ 合計 : 9 ページ
 
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