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LM2940 Datasheet(PDF) 6 Page - E-Tech Electronics LTD

Part # LM2940
Description  1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
Download  12 Pages
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Manufacturer  ETL [E-Tech Electronics LTD]
Direct Link  http://e-tech.com.hk
Logo ETL - E-Tech Electronics LTD

LM2940 Datasheet(HTML) 6 Page - E-Tech Electronics LTD

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LM2940
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
6 of 12
www.unisonic.com.tw
QW-R102-016.M
ELECTRICAL CHARACTERISTICS(Cont.)
UTC LM2940-15V
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output Voltage
VOUT
16.75V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
14.55 15.00 15.45
V
Line regulation
VOUT
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
20
150
mV
Load Regulation
VOUT
50mA ≤ IOUT ≤ 1A
70
150
mV
Output Impedance
ROUT
100mA DC and 20mARMS, fO=120Hz
100
mΩ
Quiescent Current
IQ
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
10
15
mA
Output Noise Voltage
eN
10Hz-100kHz, IOUT =5mA
450
μVRMS
Ripple Rejection
RR
fO=120Hz, 1VRMS, IOUT =100mA
52
64
dB
Long Term Stability
60
mV/1000Hr
Dropout Voltage
VD
IOUT =1A
0.5
0.8
V
IOUT =100mA
0.11
0.15
Short Circuit Current
ISC
(Note)
2.5
A
Maximum Line Transient
TIN
ROUT=100Ω, T ≤ 100ms
60
75
V
Reverse Polarity DC Input Voltage
VRIN
ROUT=100Ω
-15
-30
V
Reverse Polarity Transient Input
Voltage
VTRRI
ROUT=100Ω, T ≤ 100ms
-50
-75
V
Note: Output current will decrease with temperature increase but will not drop below 1A at the maximum specified
temperature.


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