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參數(shù)資料
| 型號： | MC33161PG |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 電源管理 |
| 英文描述： | Universal Voltage Monitors |
| 中文描述： | 2-CHANNEL POWER SUPPLY SUPPORT CKT, PDIP8 |
| 封裝： | LEAD FREE, PLASTIC, DIP-8 |
| 文件頁數(shù)： | 14/18頁 |
| 文件大?。?/td> | 225K |
| 代理商： | MC33161PG |
MC34161, MC33161, NCV33161
http://onsemi.com
14
Figure 27. StepDown Converter
+
1.27V
+
1.27V
+
2.8V
+
0.6V
+
2.54V
Reference
+
+
+
4
1
7
2
3
5
6
8
0.005
470
0.01
1.8k
+
330
V
in
12V
4.7k
1.6k
0.01
47k
1N5819
MPS750
470 H
+
1000
V
O
5.0V/250mA
Test
Conditions
Results
Line Regulation
V
in
= 9.5 V to 24 V, I
O
= 250 mA
40 mV =
±
0.1%
Load Regulation
V
in
= 12 V, I
O
= 0.25 mA to 250 mA
2.0 mV =
±
0.2%
Output Ripple
V
in
= 12 V, I
O
= 250 mA
50 mVpp
Efficiency
V
in
= 12 V, I
O
= 250 mA
87.8%
The above figure shows the MC34161 configured as a stepdown converter. Channel 1 monitors the output voltage while Channel
2 performs the oscillator function. Upon initial powerup, the converters output voltage will be below nominal, and the output of Channel
1 will allow the oscillator to run. The external switch transistor will eventually pumpup the output capacitor until its voltage exceeds
the input threshold of Channel 1. The output of Channel 1 will then switch low and disable the oscillator. The oscillator will commence
operation when the output voltage falls below the lower threshold of Channel 1.
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| MC33161PG | 制造商:ON Semiconductor 功能描述:Voltage Regulator IC |
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