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參數(shù)資料
| 型號(hào)： | AN79L24M |
| 英文描述： | Negative Fixed Voltage Regulator |
| 中文描述： | 負(fù)固定電壓穩(wěn)壓器 |
| 文件頁數(shù)： | 10/11頁 |
| 文件大小： | 175K |
| 代理商： | AN79L24M |
AN79Lxx/AN79LxxM Series
Voltage Regulators
10
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 at output. A capacitor of 0.1
μ
F to
0.47
μ
F should be connected near an input pin.
C
O
: Deadly needed to prevent from oscillation (0.33
μ
F to 1.0
μ
F). It
is recommended to use a capacitor of a small internal imped-
ance (ex. tantalum capacitor) when using it under a low tem-
perature.
When any sudden change of load current is likely to occur, con-
nect 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 Example
Figure 1
C
O
V
O
C
I
V
I
D
i
1
3
2
In
GND
Out
Figure 2
C
O
Output
1
3
2
+
V
O
2
μ
F
1
μ
F
I
Bias
AN79Lxx
3
1
2
R
2
R
1
V
O
'
V
I
Input
Common
Output
|
V
O
|
=
V
O
' 1
+
+
I
Q
R
1
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
.
n
n
n
n
n
·
·
·
·
·
·
·
·
·
·
·
·
n
n
n
n
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AN79N12 | Negative Fixed Voltage Regulator |
| AN79N18 | Negative Fixed Voltage Regulator |
| AN79N24 | Negative Fixed Voltage Regulator |
| AN79N05 | Negative Fixed Voltage Regulator |
| AN79N07 | Negative Fixed Voltage Regulator |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AN79L24ME1 | 功能描述:IC REG LDO -24V .1A TO243 RoHS:否 類別:集成電路 (IC) >> PMIC - 穩(wěn)壓器 - 線性 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 穩(wěn)壓器拓?fù)浣Y(jié)構(gòu):正，固定式 輸出電壓:3V 輸入電壓:最高 5.5V 電壓 - 壓降（標(biāo)準(zhǔn)）:0.4V @ 300mA 穩(wěn)壓器數(shù)量:1 電流 - 輸出:300mA（最小值） 電流 - 限制（最?。?350mA 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:TO-236-3，SC-59，SOT-23-3 供應(yīng)商設(shè)備封裝:SC-59-3 包裝:Digi-Reel® 產(chǎn)品目錄頁面:1134 (CN2011-ZH PDF) 其它名稱:AP130-30WLDIDKR |
| AN79LXX | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:3-pin negative output voltage regulator (100 mA type) |
| AN79LXXM | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:3-pin negative output voltage regulator (100 mA type) |
| AN79M00 | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:3-pin Negative Output Voltage Regulators 500mA Type |
| AN79M00F | 制造商:PANASONIC 制造商全稱:Panasonic Semiconductor 功能描述:3-pin Negative Output Voltage Regulators 500mA Type |
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