- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄200634 > UPC16318 Useage of Three-Terminal Regulators | User＇s Manual[05/2000] PDF資料下載
參數(shù)資料
| 型號： | UPC16318 |
| 英文描述： | Useage of Three-Terminal Regulators | User＇s Manual[05/2000] |
| 中文描述： | 使用三端穩(wěn)壓器|用戶手冊[05/2000] |
| 文件頁數(shù)： | 35/35頁 |
| 文件大?。?/td> | 187K |
| 代理商： | UPC16318 |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁第32頁第33頁第34頁當(dāng)前第35頁
User’s Manual G12702EJ8V0UM00
9
Figure 3-3. (Simplified) Band Gap Reference Circuit of
PC7800A Series
VREF
VIN
GND
<2> Error amplifier
This circuit controls the output voltage by detecting and comparing the reference voltage created by the
reference voltage circuit and the resistor split output voltage. If VOUT is the output voltage and VREF is the
reference voltage (refer to Figure 3-1), the following relationship holds.
VOUT =
VREF ........................................................................................................................ (3 - 1)
Here, A is the open loop gain of the error amplifier and
β = RA / (RA + RB).
<3> Active load (constant current circuit)
Expression (3 - 1) becomes the following if the open loop gain A of the error amplifier is sufficiently large
compared to 1.
VOUT = VREF/
β
A small bias current and high resistance are realized by using a constant current circuit in the error amplifier
load to make A 60 to 80 dB.
<4> Output stage power transistor
The output stage power transistor supplies current to the load. Although normally a Darlington form NPN, the
low saturation type of power supply IC uses a PNP single transistor.
.
A
β (1 + A)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UPC29S78 | Useage of Three-Terminal Regulators | User＇s Manual[05/2000] |
| UPC3025 | Useage of Three-Terminal Regulators | User＇s Manual[05/2000] |
| UPC1663B | Analog IC |
| UPC1663C | Analog IC |
| UPC1663P | Analog IC |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UPC16320 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:動靜態(tài)VFD驅(qū)動,36段輸出,三線串行輸入數(shù)據(jù) |
| UPC16324 | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Useage of Three-Terminal Regulators | User＇s Manual[05/2000] |
| UPC1651G | 制造商:NEC 制造商全稱:NEC 功能描述:WIDE BAND UHF SILICON MMIC AMPLIFIER |
| UPC1652G | 制造商:NEC 制造商全稱:NEC 功能描述:SILICON MONOLITHIC BIPOLAR INTEGRATED CIRCUIT WIDE BAND AMPLIFIER |
| UPC1653A | 制造商:未知廠家 制造商全稱:未知廠家 功能描述:Analog IC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。