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LM2940 Datasheet(PDF) 5 Page - Unisonic Technologies

Part No. LM2940
Description  1A LOW-DROPOUT POSITIVE VOLTAGE REGULATOR
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Maker  UTC [Unisonic Technologies]
Homepage  http://www.utc-ic.com
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LM2940 Datasheet(HTML) 5 Page - Unisonic Technologies

 
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LM2940
LINEAR INTEGRATED CIRCUIT
UNISONICTECHNOLOGIESCO.,LTD
5 of 11
www.unisonic.com.tw
QW-R102-016.E
ELECTRICAL CHARACTERISTICS(Cont.)
UTC LM2940-12V
PARAMETER
SYMBOL
TEST CONDITIONS
MIN
TYP
MAX
UNIT
Output Voltage
VOUT
13.6V ≤ VIN ≤ 26V, 5mA ≤ IOUT ≤ 1A
11.64 12.00 12.36
V
Line regulation
VOUT
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
20
120
mV
Load Regulation
VOUT
50mA ≤ IOUT ≤ 1A
55
120
mV
Output Impedance
Ro
100 mADC and 20mArms, fo=120Hz
80
mΩ
Quiescent Current
IQ
VOUT +2V ≤ VIN ≤ 26V, IOUT =5mA
10
15
mA
Output Noise Voltage
eN
10Hz-100kHz, IOUT =5mA
360
µVrms
Ripple Rejection
RR
fo=120Hz, 1Vrms, IOUT =100mA
54
66
dB
Long Term Stability
48
mV/
1000Hr
IOUT =1A
0.5
0.8
Dropout Voltage
VD
IOUT =100mA
0.11
0.15
V
Short Circuit Current
ISC
(Note)
1.6
1.9
A
Maximum Line Transient
TIN
Ro=100Ω, T ≤ 100ms
60
75
V
Reverse Polarity DC Input Voltage
VRIN
Ro=100Ω
-15
-30
V
Reverse Polarity Transient Input
Voltage
VTRRI
Ro=100Ω, T≤100ms
-50
-75
V
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
Ro
100 mADC 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
IOUT =1A
0.5
0.8
Dropout Voltage
VD
IOUT =100mA
0.11
0.15
V
Short Circuit Current
ISC
(Note)
1.6
1.9
A
Maximum Line Transient
TIN
Ro=100Ω, T ≤ 100ms
60
75
V
Reverse Polarity DC Input Voltage
VRIN
Ro=100Ω
-15
-30
V
Reverse Polarity Transient Input
Voltage
VTRRI
Ro=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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