MC33363 데이터 시트보기 (PDF) - ON Semiconductor
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MC33363 Datasheet PDF : 14 Pages
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MC33363
1.0 M
CT = 100 pF
500 k CT = 200 pF
200 k CT = 500 pF
100 k CT = 1.0 nF
50 k CT = 2.0 nF
VCC = 20 V
TA = 25°C
20 k CT = 5.0 nF
10 k CT = 10 nF
7.0
10
15 20
30
50
70
RT, TIMING RESISTOR (kW)
Figure 1. Oscillator Frequency
versus Timing Resistor
1.0
0.8
VCC = 20 V
CT = 1.0 mF
0.6
TA = 25°C
0.4
0.2
Inductor supply voltage and inductance value are
0.1 adjusted so that Ipk turn−off is achieved at 5.0 ms.
7.0
10
15 20
30 40 50
70
RT, TIMING RESISTOR (kW)
Figure 2. Power Switch Peak Drain Current
versus Timing Resistor
0.8
VCC = 20 V
TA = 25°C
0.5
0.3
0.2
0.15
0.1
0.08
7.0
10
15 20
30
50
70
RT, TIMING RESISTOR (kW)
Figure 3. Oscillator Charge/Discharge
Current versus Timing Resistor
70
RD/RT Ratio
Discharge Resistor
Pin 6 to GND
60
VCC = 20 V
CT = 2.0 nF
TA = 25°C
50
40
RC/RT Ratio
Charge Resistor
Pin 6 to Vreg
30
1.0
2.0
3.0
5.0
7.0
10
TIMING RESISTOR RATIO
Figure 4. Maximum Output Duty Cycle
versus Timing Resistor Ratio
100
80
Gain
60
Phase
40
0
VCC = 20 V
VO = 1.0 to 4.0 V
RL = 5.0 MW
30
CL = 2.0 pF
TA = 25°C
60
90
20
120
0
150
− 20
10
180
100
1.0 k 10 k
100 k 1.0 M 10 M
f, FREQUENCY (Hz)
Figure 5. Error Amp Open Loop Gain and
Phase versus Frequency
0
−1.0
Source Saturation
Vref
(Load to Ground)
− 2.0
2.0
1.0
Sink Saturation
(Load to Vref)
VCC = 20 V
TA = 25°C
GN
0
D
0
0.2
0.4
0.6
0.8
1.0
IO, OUTPUT LOAD CURRENT (mA)
Figure 6. Error Amp Output Saturation
Voltage versus Load Current
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