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L4940 数据表(PDF) 4 Page - STMicroelectronics

部件名 L4940
功能描述  VERY LOW DROP 1.5 A REGULATORS
PDF  13 Pages
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制造商  STMICROELECTRONICS [STMicroelectronics]
网页  http://www.st.com
标志 STMICROELECTRONICS - STMicroelectronics

L4940 数据表(HTML) 4 Page - STMicroelectronics

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ELECTRICAL CHARACTERISTICS FOR L4940V85 (refer to the test circuits, Tj =25
oC,
Vi = 10.5V, Ci = 0.1
µF, Co =22 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Vo
Output Voltage
Io = 500 mA
8.3
8.5
8.7
V
Vo
Output Voltage
Io = 5 mA to 1500 mA
Vi = 10.2 to 16 V
8.15
8.5
8.85
V
Vi
Operating Input Voltage
Io = 5 mA
17
V
∆Vo
Line Regulation
Io = 5 mA
Vi = 9.5 to 17 V
4
9
mV
∆Vo
Load Regulation
Io = 5 to 1500 mA
Io = 500 to 1000 mA
12
8
30
16
mV
IQ
Quiescent Current
Io =5 mA
Io = 1.5 A Vi = 10.2 V
4
30
8
50
mA
∆IQ
Quiescent Current Change
Io =5 mA
Io = 1.5 A Vi = 10.2 to 16 V
2.5
15
mA
∆Vo
∆T
Output Voltage Drift
0.8
mV/
oC
SVR
Supply Voltage Rejection
Io = 1 A
f = 120 Hz
58
66
dB
Vd
Dropout Voltage
Io = 0.5 A
Io = 1.5 A
200
500
400
900
mV
Isc
Short Circuit Current
Vi =14 V
Vi = 10.2 V
2
2.2
2.7
2.9
A
ELECTRICAL CHARACTERISTICS FOR L4940V5 (refer to the test circuits, Tj =25
oC,
Vi = 7V, Ci = 0.1
µF, Co =22 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
Vo
Output Voltage
Io = 500 mA
4.9
5
5.1
V
Vo
Output Voltage
Io = 5 mA to 1500 mA
Vi = 6.5 to 16 V
4.855.2
V
Vi
Operating Input Voltage
Io = 5 mA
17
V
∆Vo
Line Regulation
Io = 5 mA
Vi = 6 to 17 V
4
10
mV
∆Vo
Load Regulation
Io = 5 to 1500 mA
Io = 500 to 1000 mA
8
5
25
15
mV
IQ
Quiescent Current
Io =5 mA
Io = 1.5 A Vi = 6.5 V
5
30
8
50
mA
∆IQ
Quiescent Current Change
Io =5 mA
Io = 1.5 A Vi = 6.5 to 16 V
3
15
mA
∆Vo
∆T
Output Voltage Drift
0.5
mV/
oC
SVR
Supply Voltage Rejection
Io = 1 A
f = 120 Hz
58
68
dB
Vd
Dropout Voltage
Io = 0.5 A
Io = 1.5 A
200
500
400
900
mV
Isc
Short Circuit Current
Vi =14 V
Vi = 6.5 V
2
2.2
2.7
2.9
A
L4940 series
4/13



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