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NTE7154 Datasheet(PDF) 2 Page - NTE Electronics

Part No. NTE7154
Description  Integrated Circuit Control Circuit for Switch Mode Power Supplies using MOS Transistors
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Manufacturer  NTE [NTE Electronics]
Direct Link  http://www.nteinc.com
Logo NTE - NTE Electronics

NTE7154 Datasheet(HTML) 2 Page - NTE Electronics

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Electrical Characteristics: (VCC = 10V, TA = +25°C unless otherwise specified)
Parameter
Symbol
Test Conditions
Min
Typ
Max
Unit
Start–Up Hysteresis
Start–Up Current Drain
I6E0
V6 = V6E
0.6
0.8
mA
Switch–On Voltage
V6E
11
12
13
V
Switch–Off Voltage
V6A
4.5
5.0
5.5
V
Switch–On Current
I6E1
V6 = V6E
11
mA
Switch–Off Current
I6A1
V6 = V6A
10
mA
Voltage Clamp (V6 = 10V, IC Switched Off)
At Pin2 (V6 < V6E)
V2(Max)
I2 = 1mA
5.6
6.6
9.0
V
At Pin3 (V6 < V6E)
V3(Max)
I3 = 1mA
5.6
6.6
9.0
V
Control Range
Control Input Voltage
V1R
400
410
420
mV
Voltage Gain of the Control Circuit in the
Control Range
–VR
VR = d(V2S – V2B)/dV1, f = 1kHz
43
dB
Primary Current Simulation Voltage
Basic Value
VsB
0.955 1.000 1.030
V
Overload Range and Short Circuit Operation
Peak Value in the Range of Secondary
Overload
V2O
V1 = V1R = 10mV
2.80
2.95
3.10
V
Maximum Ramp Amplitude
DV2
V2O – V2B
1.82
1.95
2.08
V
Peak value in the Range of Secondary
Short–Circuit Operation
V2S
V1 = 0
2.3
2.5
2.7
V
Foldback Point Correction
Foldback Point Correction Current
–I2
V3 = 3.7V
300
500
650
µA
Generally Valid Data (V6 = 10V) Voltage of the Zero Transition Detector
Positive Clamping Voltage
V8P
I8 = 1mA
0.75
V
Negative Clamping Voltage
V8N
I8 = –1mA
–0.2
V
Threshold Voltage
V8S
40
50
mV
Suppression of Transformer Ringing
TUL
3.0
3.8
4.5
µs
Input Current
–I8
V8 = 0
0
4
µV
Push–Pull Output Stage Saturation Voltages
Pin5 Sourcing
VSatU
I5 = –0.1A
1.5
2.0
V
Pin5 Sinking
VSatU
I5 = +0.1A
1.0
1.2
V
I5 = +0.5A
1.4
1.8
V
Output Slow Rate
Rising Edge
+dV5/dt
70
V/
µs
Falling Edge
–dV5/dt
100
V/
µs
Reduction of Control Voltage
Current to Reduce the Control Voltage
–I1
V7 = 1V
50
µA


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