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參數資料
| 型號： | MC78BC43NTR |
| 廠商： | ON SEMICONDUCTOR |
| 元件分類： | 基準電壓源/電流源 |
| 英文描述： | Micropower Voltage Regulator |
| 中文描述： | 4.3 V FIXED POSITIVE LDO REGULATOR, 0.2 V DROPOUT, PDSO5 |
| 封裝： | PLASTIC, SOT-23, 5 PIN |
| 文件頁數： | 6/8頁 |
| 文件大小： | 60K |
| 代理商： | MC78BC43NTR |
MC78BC00 Series
http://onsemi.com
6
External PNP Transistor
The external pin of this IC is protected by a current limit
circuit from the destruction caused by excess current. The
R2 resistor shown in Figure 10 is used for the protection of
the external transistor, although this circuit can operate
without the resistor. Resistor R2 should be determined via
the input voltage, output voltage, output current,
temperature and the H
FE
of the external pass transistor.
Figure 10. External PNP
Out
MJD32C
Ext
10 F
3
4
V
O
In
R1
R2
MC78BCXXNTR
.033 F
Figure 11. Typical Application
Out
5.0 V
MJD32C
V
O
Ext
V
DD
1
2
In
3
4
5
CE
Gnd
10 F
10 F
MC78BC50NTR
10 k
.033 F
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