參數(shù)資料
型號： MC33025PG
廠商： ON SEMICONDUCTOR
元件分類： 穩(wěn)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： LEAD FREE, PLASTIC, DIP-16
文件頁數(shù)： 4/20頁
文件大?。?/td> 482K
代理商： MC33025PG
MC34025, MC33025
http://onsemi.com
4
Gain
Phase
1
C
T
=
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
T
A
, AMBIENT TEMPERATURE (
°
C)
25
75
100
125
AV
,
fo
Figure 2. Timing Resistor versus
Oscillator Frequency
,
RT
100
1000
10
4
10
5
10
6
10
7
f
osc
, OSCILLATOR FREQUENCY (Hz)
Figure 3. Oscillator Frequency versus Temperature
Figure 4. 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 5. PWM Comparator Zero Duty Cycle
Threshold Voltage versus Temperature
55
25
0
25
50
75
100
T
A
, AMBIENT TEMPERATURE (
°
C)
Figure 6. Error Amp Small Signal
Transient Response
Figure 7. Error Amp Large Signal
Transient Response
Ω
125
0
45
90
135
°
C
θ
V
0.1 s/DIV
0.1 s/DIV
V
CC
= 15 V
R
T
= 3.6 k
C
T
= 1.0 nF
R
T
= 1.2 k
C
T
= 1.0 nF
R
T
= 36 k
C
T
= 1.0 nF
50
50 kHz
400 kHz
1.0 MHz
V
CC
= 15 V
Pin 7(9) = 0 V
V
CC
= 15 V
T
A
= +25
°
C
1.3
1.28
1.26
1.24
1.22
1.2
100 k
10 k
1.0 k
470
1200
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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