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ST78L20 Scheda tecnica(PDF) 2 Page - SEMTECH ELECTRONICS LTD.

Il numero della parte ST78L20
Spiegazioni elettronici  3-Terminal positive voltage regulator
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Produttore elettronici  SEMTECH_ELEC [SEMTECH ELECTRONICS LTD.]
Homepage  http://www.semtech.net.cn
Logo SEMTECH_ELEC - SEMTECH ELECTRONICS LTD.

ST78L20 Scheda tecnica(HTML) 2 Page - SEMTECH ELECTRONICS LTD.

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Dated : 07/12/2002
®
SEMTECH ELECTRONICS LTD.
(Subsidiary of Sino-Tech International Holdings Limited, a company
listed on the Hong Kong Stock Exchange, Stock Code: 724)
ST 78L20
Electrical Characteristics
(Unless otherwise specified, VIN=29V, IOUT=40mA, CIN=0.33μF, COUT=0.1μF, Tj=25°C)
Symbol
Test Condition
Min.
Typ.
Max.
Unit
Output Voltage
VOUT
19.2
20
20.8
V
Input Regulation
Reg. line
23.5V
≤V
IN≤35V
-
33
330
mV
24V
≤V
IN≤35V
-
28
285
Load Regulation
Reg. load
1.0mA
≤I
OUT≤100mA
-
33
180
mV
1.0mA
≤I
OUT≤40mA
-
17
90
Output Voltage
VOUT
23.5V
≤V
IN≤35V
19.0
-
21
V
1.0mA
≤I
OUT≤40mA
VOUT
VIN=29V,
19.0
-
21
V
1.0mA
≤I
OUT≤70mA
Quiescent Current
IB
-
3.3
6.5
mA
Quiescent
Current
With line
ΔI
B
24V
≤V
IN≤35V
-
-
1.5
mA
Change
With load
1.0mA
≤I
OUT≤40mA
-
-
0.1
Output Noise Voltage
VNO
Ta=25
°C,
10Hz
≤f≤100KHz
-
170
-
μV
Ripple Rejection
RR
f=120Hz,
25V
≤V
IN≤35V,Tj=25°C
31
37
-
dB
Dropout Voltage
⎢V
IN-VOUT
Tj=25°C
-
1.7
-
V
Average Temperature
Coefficient of Output Voltage
TCVO
IOUT=5mA
-
-1.7
-
mV/
°C


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