參數(shù)資料
型號: L7809C
廠商: 意法半導(dǎo)體
元件分類: 基準電壓源/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
文件大小: 1801K
代理商: L7809C
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
相關(guān)PDF資料
PDF描述
L7809CP 5.0 AMP POSITIVE VOLTAGE REGULATOR
L7809CT 5.0 AMP POSITIVE VOLTAGE REGULATOR
L7815AB PRECISION 1A REGULATORS
L7815ABD2T PRECISION 1A REGULATORS
L7815ABV PRECISION 1A REGULATORS
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
L7809CD2T 功能描述:線性穩(wěn)壓器 - 標準 9.0V 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
L7809CD2T-TR 功能描述:線性穩(wěn)壓器 - 標準 9.0V 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
L7809CD2T-TR-CUT TAPE 制造商:ST 功能描述:L7809 Series 9 V 1.5 A Three Terminal Positive Voltage Regulator - D2PAK
L7809CF 功能描述:線性穩(wěn)壓器 - 標準 +9 V out 1.5 A out 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
L7809CP 功能描述:線性穩(wěn)壓器 - 標準 9.0V 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