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參數(shù)資料
| 型號(hào)： | L7812CD2T |
| 廠(chǎng)商： | 意法半導(dǎo)體 |
| 英文描述： | positive voltage regulators |
| 中文描述： | 正電壓調(diào)節(jié)器 |
| 文件頁(yè)數(shù)： | 23/34頁(yè) |
| 文件大小： | 1801K |
| 代理商： | L7812CD2T |
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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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| L7812CF | positive voltage regulators |
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| L7812CT | positive voltage regulators |
| L7812CV | positive voltage regulators |
| L7812T | Flat Jacketed Cable, 3603/50 28 AWG, .050 (1.27) |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| L7812CD2T-TR | 功能描述:線(xiàn)性穩(wěn)壓器 - 標(biāo)準(zhǔn) 12V 1.0A Positive RoHS:否 制造商:STMicroelectronics 輸出類(lèi)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(xiàn)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 |
| L7812CD2T-TR | 制造商:STMicroelectronics 功能描述:IC, LINEAR VOLT REGULATOR, 12V, D2-PAK-3 |
| L7812CD2T-TR-CUT TAPE | 制造商:ST 功能描述:L7812 Series 12 V 1.5 A Three Terminal Positive Voltage Regulator - D2PAK |
| L7812CDT-TR | 制造商:ST 功能描述:Positive voltage regulators |
| L7812CF | 制造商:STMICROELECTRONICS 制造商全稱(chēng):STMicroelectronics 功能描述:POSITIVE VOLTAGE REGULATORS |
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