參數(shù)資料
型號(hào): AMC7580-X.XPF
廠商: Electronic Theatre Controls, Inc.
元件分類: 基準(zhǔn)電壓源/電流源
英文描述: Cap-Free, NMOS, 150mA Low Dropout Regulator with Reverse Current Protection
中文描述: 無電容,NMOS管,150mA的低壓差穩(wěn)壓器的反向電流保護(hù)
文件頁數(shù): 8/12頁
文件大?。?/td> 336K
代理商: AMC7580-X.XPF
AMC DOC. #: AMC7580_E (LF)
Feb 2005
AMC7580
7A L
OW
D
ROPOUT
R
EGULATOR
Figure 4.
Capaci nce
Effects
ta
ESL
Effects
ESR
Effects
Slope, V/t =
I/C
Point at which regulator
takes control
z
Output Voltage
The AMC7580-ADJ develops a 1.25V reference voltage between the Sense pin and the Adjust pin (Figure 5).
Placing a resistor between these two terminals causes a constant current to flow thought R1 and down though R2 to
set the output voltage. In general R1 is chosen so that this current is the specified minimum load current of 10 mA.
The current out of the Adjust pin is small, typically 50
μ
A and it adds to the current for R1. For best regulation the
top of the resistor divider should be connected directly to the Sense pin.
Figure 5 Setting Output Voltage
Figure 6. Optional Clamp Diodes Protect
Against Input Crowbar Circuit
D2
D1
R2
R1
ADJ
AMC7580
-ADJ
SENSE
V
POWER
V
CONTROL
R2
R1
I
ADJ
= 50
μ
A
ADJ
V
REF
AMC7580
-ADJ
SENSE
V
OUT
V
POWER
V
CONTROL
Copyright
2002, ADD Microtech Corp.
8
www.addmtek.com
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