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SG3525A Datasheet(PDF) 4 Page - ON Semiconductor

Part No. SG3525A
Description  Pulse Width Modulator Control Circuit
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Manufacturer  ONSEMI [ON Semiconductor]
Direct Link  http://www.onsemi.com
Logo ONSEMI - ON Semiconductor

SG3525A Datasheet(HTML) 4 Page - ON Semiconductor

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SG3525A
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ELECTRICAL CHARACTERISTICS (VCC = +20 Vdc, TA = Tlow to Thigh [Note 3], unless otherwise noted.)
Characteristics
Symbol
Min
Typ
Max
Unit
REFERENCE SECTION
Reference Output Voltage (TJ = +25°C)
Vref
5.00
5.10
5.20
Vdc
Line Regulation (+8.0 V
≤ VCC ≤ +35 V)
Regline
10
20
mV
Load Regulation (0 mA
≤ IL ≤ 20 mA)
Regload
20
50
mV
Temperature Stability
DVref/DT
20
mV
Total Output Variation Includes Line and Load Regulation over Temperature
DVref
4.95
5.25
Vdc
Short Circuit Current (Vref = 0 V, TJ = +25°C)
ISC
80
100
mA
Output Noise Voltage (10 Hz
≤ f ≤ 10 kHz, TJ = +25°C)
Vn
40
200
mVrms
Long Term Stability (TJ = +125°C) (Note 4)
S
20
50
mV/khr
OSCILLATOR SECTION (Note 5, unless otherwise noted.)
Initial Accuracy (TJ = +25°C)
±2.0
±6.0
%
Frequency Stability with Voltage
(+8.0 V
≤ VCC ≤ +35 V)
Dfosc
DVCC
±1.0
±2.0
%
Frequency Stability with Temperature
Dfosc
DT
±0.3
%
Minimum Frequency (RT = 150 kW, CT = 0.2 mF)
fmin
50
Hz
Maximum Frequency (RT = 2.0 kW, CT = 1.0 nF)
fmax
400
kHz
Current Mirror (IRT = 2.0 mA)
1.7
2.0
2.2
mA
Clock Amplitude
3.0
3.5
V
Clock Width (TJ = +25°C)
0.3
0.5
1.0
ms
Sync Threshold
1.2
2.0
2.8
V
Sync Input Current (Sync Voltage = +3.5 V)
1.0
2.5
mA
ERROR AMPLIFIER SECTION (VCM = +5.1 V)
Input Offset Voltage
VIO
2.0
10
mV
Input Bias Current
IIB
1.0
10
mA
Input Offset Current
IIO
1.0
mA
DC Open Loop Gain (RL ≥ 10 MW)
AVOL
60
75
dB
Low Level Output Voltage
VOL
0.2
0.5
V
High Level Output Voltage
VOH
3.8
5.6
V
Common Mode Rejection Ratio (+1.5 V
≤ VCM ≤ +5.2 V)
CMRR
60
75
dB
Power Supply Rejection Ratio (+8.0 V
≤ VCC ≤ +35 V)
PSRR
50
60
dB
PWM COMPARATOR SECTION
Minimum Duty Cycle
DCmin
0
%
Maximum Duty Cycle
DCmax
45
49
%
Input Threshold, Zero Duty Cycle (Note 5)
Vth
0.6
0.9
V
Input Threshold, Maximum Duty Cycle (Note 5)
Vth
3.3
3.6
V
Input Bias Current
IIB
0.05
1.0
mA
3. Tlow = 0°
Thigh = +70°C
4. Since long term stability cannot be measured on each device before shipment, this specification is an engineering estimate of average
stability from lot to lot.
5. Tested at fosc = 40 kHz (RT = 3.6 kW, CT = 0.01 mF, RD = 0 W).


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