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參數資料
| 型號： | MC33063AVDR2G |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 穩壓器 |
| 英文描述： | Dual High Efficiency, Low Noise, Synchronous Step-Down Switching Regulators |
| 中文描述： | 1.5 A SWITCHING REGULATOR, 100 kHz SWITCHING FREQ-MAX, PDSO8 |
| 封裝： | LEAD FREE, SOIC-8 |
| 文件頁數： | 4/13頁 |
| 文件大小： | 168K |
| 代理商： | MC33063AVDR2G |
MC34063A, MC33063A, NCV33063A
http://onsemi.com
4
t
on
V
CC
= 5.0 V
Pin 7 = V
CC
Pin 5 = GND
T
A
= 25
°
C
t
off
Figure 2. Output Switch OnOff Time versus
Oscillator Timing Capacitor
Figure 3. Timing Capacitor Waveform
0.01 0.02
0.05
0.1
0.2
0.5 1.0
2.0
5.0 10
C
T
, OSCILLATOR TIMING CAPACITOR (nF)
,
o
t
μ
10 s/DIV
,
O
V
2
V
CC
= 5.0 V
Pin 7 = V
CC
Pin 2 = GND
Pins 1, 5, 8 = Open
C
T
= 1.0 nF
T
A
= 25
°
C
1000
500
200
100
50
20
10
5.0
2.0
1.0
Figure 4. Emitter Follower Configuration Output
Saturation Voltage versus Emitter Current
Figure 5. Common Emitter Configuration Output
Switch Saturation Voltage versus
Collector Current
Figure 6. Current Limit Sense Voltage
versus Temperature
Figure 7. Standby Supply Current versus
Supply Voltage
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
,
C
V
I
E
, EMITTER CURRENT (A)
V
CC
= 5.0 V
Pins 1, 7, 8 = V
CC
Pins 3, 5 = GND
T
A
= 25
°
C
(See Note 7)
,
C
V
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
I
C
, COLLECTOR CURRENT(A)
Darlington Connection
Forced = 20
55
25
0
25
50
75
100
125
,
I
V
T
A
, AMBIENT TEMPERATURE (
°
C)
V
CC
= 5.0 V
I
chg
= I
dischg
0
5.0
10
15
20
25
30
35
40
,
C
I
V
CC
, SUPPLY VOLTAGE (V)
C
T
= 1.0 nF
Pin 7 = V
Pin 2 = GND
1.8
1.7
1.6
1.5
1.4
1.3
1.2
1.1
1.0
1.1
1.0
0.9
0.8
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
400
380
360
340
320
300
280
260
240
220
200
3.6
3.2
2.4
2.0
1.6
1.2
0.8
0.4
0
2.8
V
CC
= 5.0 V
Pin 7 = V
CC
Pins 2, 3, 5 = GND
T
A
= 25
°
C
(See Note 7)
7. Low duty cycle pulse techniques are used during test to maintain junction temperature as close to ambient temperature as possible.
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