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參數(shù)資料
| 型號(hào)： | AN7810F |
| 廠商： | PANASONIC CORP |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | ECONOLINE: REC3-S_DRW(Z)/H* - 3W DIP Package- 1kVDC Isolation- Wide Input 2:1 & 4:1- Regulated Output- 100% Burned In- UL94V-0 Package Material- Continuous Short Circiut Protection- Efficiency to 80% |
| 中文描述： | 10 V FIXED POSITIVE REGULATOR, PSFM3 |
| 封裝： | TO-220, 3 PIN |
| 文件頁(yè)數(shù)： | 9/10頁(yè) |
| 文件大小： | 507K |
| 代理商： | AN7810F |
Voltage Regulators
AN78xx/AN78xxF Series
9
I
Usage Notes
1. Cautions for a basic circuit
C
I
: When a wiring from a smoothing circuit to a three-pin regulator
is long, it is likely to oscillate in output. A capacitor of 0.1
μ
F to
0.47
μ
F should be connected near an input pin.
C
O
: When any sudden change of load current is likely to occur,
connect an electrolytic capacitor of 10
μ
F to 100
μ
F to improve a
transitional response of output voltage.
D
i
: Normally unnecessary. But add it in the case that there is a
residual voltage at the output capacitor Co even after switching
off the supply power because a current is likely to flow into an
output pin of the IC and damage the IC.
2. Other caution items
1) Short-circuit between the input pin and GND pin
If the input pin is short-circuitted to GND or is cut
off when a large capacitance capacitor has been con-
nected to the IC's load, a voltage of a capacitor con-
nected to an output pin is applied between input/out-
put of the IC and this likely results in damage of the
IC. It is necessary, therefore, to connect a diode, as
shown in figure 2, to counter the reverse bias between
input/output pins.
2) Floating of GND pin
If a GND pin is made floating in an operating mode, an unstabilized input voltage is outputted. In this case, a
thermal protection circuit inside the IC does not normally operate. In this state, if the load is short-circuited or
overloaded, it is likely to damage the IC.
I
Application Circuit Examples
1. Current bootstrap circuit
I
Basic Regulator Circuit
C
I
: C
I
is necessary when the input line is long.
C
O
: C
O
improves the transient response.
C
O
C
I
Input
Output
AN78xx
AN78xxF
Common
1
3
2
V
O
V
O
V
O
'
0.33
μ
F
0.1
μ
F
V
I
V
I
I
O
I
Bias
V
O
=
V
O
'
+
I
Bias
+
R
1
2
V
O
'
3
Q
1
AN78xx
AN78xxF
2
AN78xx
AN78xxF
1
3
1
3
R
2
R
1
Note) V
O
varies due to sample to sample variation
of I
Bias
.
Never fail to adjust individually with R
1
.
Figure 1
C
O
V
O
C
I
V
I
D
i
1
3
2
In
GND
Out
Output
Figure 2
C
O
1
3
2
+
2. Adjustable output regulator
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AN7810NSP | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
| AN7812 | 制造商:PASONI 功能描述: 制造商:Panasonic Industrial Company 功能描述:IC |
| AN7812F | 制造商:Panasonic Industrial Company 功能描述:IC |
| AN7812NSP | 制造商:Panasonic Industrial Company 功能描述: |
| AN7812R | 制造商:Panasonic Industrial Company 功能描述:IC |
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