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參數(shù)資料
| 型號： | L7818CV |
| 廠商： | 意法半導(dǎo)體 |
| 元件分類： | 基準(zhǔn)電壓源/電流源 |
| 英文描述： | 5.0 AMP POSITIVE VOLTAGE REGULATOR |
| 中文描述： | 5.0放大器正電壓穩(wěn)壓器 |
| 文件頁數(shù)： | 23/34頁 |
| 文件大?。?/td> | 1801K |
| 代理商： | L7818CV |
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L7800 SERIES
23/34
Figure 35: Adjustable Output Voltage with Temperature Compensation
NOTE: Q
2
is connected as a diode in order to compensate the variation of the Q
1
V
BE
with the temperature. C allows a slow rise time of the V
O
.
Figure 36: Light Controllers (V
Omin
= V
XX
+ V
BE
)
Figure 37: Protection against Input Short-Circuit with High Capacitance Loads
Application with high capacitance loads and an output voltage greater than 6 volts need an external diode (see fig. 33) to protect the device
against input short circuit. In this case the input voltage falls rapidly while the output voltage decrease slowly. The capacitance discharges by
means of the Base-Emitter junction of the series pass transistor in the regulator. If the energy is sufficiently high, the transistor may be de-
stroyed. The external diode by-passes the current from the IC to ground.
V
O
= V
XX
( R
)
+ V
BE
1
V
O
rises when the light goes up
V
O
falls when the light goes up
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L7818CV | 制造商:STMicroelectronics 功能描述:IC REGULATOR +18V |
| L7818CV-DG | 制造商:STMicroelectronics 功能描述:LINEAR VOLTAGE REGULATORS & VREF - Bulk 制造商:STMicroelectronics 功能描述:IC REG LDO 18V 1.5A TO220 制造商:STMicroelectronics 功能描述:Standard Regulator Pos 18V 1.5A 3-Pin(3+Tab) TO-220 Tube 制造商:ST 功能描述:POSITIVE VOLTAGE REGULATORS |
| L7818T | 功能描述:線性穩(wěn)壓器 - 標(biāo)準(zhǔn) 18V 1.0A Positive RoHS:否 制造商:STMicroelectronics 輸出類型: 極性: 輸出電壓:1.8 V 輸出電流:150 mA 負(fù)載調(diào)節(jié): 最大輸入電壓:5.5 V 線路調(diào)整率: 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOT-323-5L |
| L7820 | 制造商:STMICROELECTRONICS 制造商全稱:STMicroelectronics 功能描述:POSITIVE VOLTAGE REGULATORS |
| L7820-02 | 制造商:HAMAMATSU 制造商全稱:Hamamatsu Corporation 功能描述:Light level control of light source Sensitivity control of optical sensor |
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