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MC34166_05 Datasheet(PDF) 4 Page - ON Semiconductor

Part No. MC34166_05
Description  3.0 A, Step−Up/Down/Inverting Switching Regulators
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Maker  ONSEMI [ON Semiconductor]
Homepage  http://www.onsemi.com
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MC34166, MC33166
http://onsemi.com
4
Figure 2. Voltage Feedback Input Threshold
versus Temperature
Figure 3. Voltage Feedback Input Bias
Current versus Temperature
Figure 4. Error Amp Open Loop Gain and
Phase versus Frequency
Figure 5. Error Amp Output Saturation
versus Sink Current
Figure 6. Oscillator Frequency Change
versus Temperature
Figure 7. Switch Output Duty Cycle
versus Compensation Voltage
−20
10 M
10
f, FREQUENCY (Hz)
0
30
60
90
120
150
180
100
1.0 k
10 k
100 k
1.0 M
0
20
40
60
80
100
Gain
Phase
−12
−55
TA, AMBIENT TEMPERATURE (°C)
−25
0
25
50
75
100
125
−8.0
−4.0
0
4.0
4.85
TA, AMBIENT TEMPERATURE (°C)
4.93
5.01
5.09
5.17
5.25
−55
−25
0
25
50
75
100
125
VCC = 12 V
0
TA, AMBIENT TEMPERATURE (°C)
20
40
60
80
100
−55
−25
0
25
50
75
100
125
2.0
0
ISink, OUTPUT SINK CURRENT (mA)
0.4
0.8
1.2
1.6
0
0.4
0.8
1.2
1.6
2.0
1.5
VComp, COMPENSATION VOLTAGE (V)
2.0
2.5
3.0
3.5
4.0
0
20
40
60
80
100
4.5
VCC = 12 V
VComp = 3.25 V
RL = 100 k
TA = +25°C
VFB(th) Max = 5.15 V
VFB(th) Min = 4.95 V
VFB(th) Typ = 5.05 V
VCC = 12 V
VFB = VFB(th)
VCC = 12 V
VFB = 5.5 V
TA = +25°C
VCC = 12 V
TA = +25°C
VCC = 12 V




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