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參數資料
| 型號： | MC33025P |
| 廠商： | MOTOROLA INC |
| 元件分類： | 穩壓器 |
| 英文描述： | High Speed Double-Ended PWM Controller |
| 中文描述： | 2 A SWITCHING CONTROLLER, 1000 kHz SWITCHING FREQ-MAX, PDIP16 |
| 封裝： | PLASTIC, DIP-16 |
| 文件頁數： | 4/20頁 |
| 文件大小： | 516K |
| 代理商： | MC33025P |
MC34025 MC33025
4
MOTOROLA ANALOG IC DEVICE DATA
Gain
Phase
1
CT=
1. 100 nF
2. 47 nF
3. 22 nF
4. 10 nF
5. 4.7 nF
6. 2.2 nF
7. 1.0 nF
8. 470 pF
9. 220 pF
2
3
4
5
6
7
8
9
– 55
– 25
0
25
75
100
125
AV
,
fo
Figure 1. Timing Resistor versus
Oscillator Frequency
,
RT
100
1000
104
105
106
107
fosc, OSCILLATOR FREQUENCY (Hz)
Figure 2. Oscillator Frequency versus Temperature
1200
TA, AMBIENT TEMPERATURE (
°
C)
Figure 3. Error Amp Open Loop Gain and
Phase versus Frequency
10
100
1.0 k
10 k
100 k
1.0 M
10 M
f, FREQUENCY (Hz)
Figure 4. PWM Comparator Zero Duty Cycle
Threshold Voltage versus Temperature
–55
–25
0
25
50
75
100
TA, AMBIENT TEMPERATURE (
°
C)
Figure 5. Error Amp Small Signal
Transient Response
Figure 6. Error Amp Large Signal
Transient Response
125
0
45
90
135
°
C
θ
V
0.1
μ
s/DIV
0.1
μ
s/DIV
VCC = 15 V
RT = 3.6 k
CT = 1.0 nF
RT = 1.2 k
CT = 1.0 nF
RT = 36 k
CT = 1.0 nF
50
50 kHz
400 kHz
1.0 MHz
VCC = 15 V
Pin 7(9) = 0 V
VCC = 15 V
TA = +25
°
C
1.3
1.28
1.26
1.24
1.22
1.2
100 k
10 k
1.0 k
470
1000
800
600
400
200
120
100
80
60
40
20
0
0
– 20
2.55 V
2.5 V
2.45 V
3.0 V
2.5 V
2.0 V
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