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PDF L4940 Data sheet ( Hoja de datos )
| Número de pieza | L4940 | |
| Descripción | VERY LOW DROP 1.5 A REGULATORS | |
| Fabricantes | STMicroelectronics | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de L4940 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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® L4940 series
VERY LOW DROP 1.5 A REGULATORS
s PRECISE 5 V, 8.5 V, 10 V, 12 V OUTPUTS
s LOW DROPOUT VOLTAGE (500 mV typ
at 1.5A)
s VERY LOW QUIESCENT CURRENT
s THERMAL SHUTDOWN
s SHORT CIRCUIT PROTECTION
s REVERSE POLARITY PROTECTION
DESCRIPTION
The L4940 series of three terminal positive
regulators is available in TO-220 and D2PAK
package and with several fixed output voltages,
making it useful in a wide range of industrial and
consumer applications. Thanks to its very low
input/output voltage drop, these devices are
particularly suitable for battery powered
equipments, reducing consumption and
prolonging battery life. Each type employs
internal current limiting, antisaturation circuit,
thermal shut-down and safe area protection.
TO-220
D2PAK
TO-263
BLOCK DIAGRAM
November 1999
1/13
1 page  
L4940 series
ELECTRICAL CHARACTERISTICS FOR L4940V10 (refer to the test circuits, Tj = 25 oC,
Vi = 12V, Ci = 0.1 µF, Co = 22 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Vo Output Voltage
Vo Output Voltage
Vi Operating Input Voltage
∆Vo Line Regulation
∆Vo Load Regulation
IQ Quiescent Current
∆IQ Quiescent Current Change
∆Vo Output Voltage Drift
∆T
Io = 500 mA
Io = 5 mA to 1500 mA
Vi = 11.7 to 16 V
Io = 5 mA
Io = 5 mA Vi = 11 to 17 V
Io = 5 to 1500 mA
Io = 500 to 1000 mA
Io = 5 mA
Io = 1.5 A Vi = 11.7 V
Io = 5 mA
Io = 1.5 A Vi = 11.7 to 16 V
9.8 10 10.2
9.6 10 10.4
17
38
15 35
10 20
48
30 50
2
13
1
SVR Supply Voltage Rejection
Vd Dropout Voltage
Is c Short Circuit Current
Io = 1 A f = 120 Hz
Io = 0.5 A
Io = 1.5 A
Vi = 14 V
Vi = 11.7 V
56 62
200 400
500 900
2 2.7
2.2 2.9
Unit
V
V
V
mV
mV
mA
mA
m V/ oC
dB
mV
A
A
ELECTRICAL CHARACTERISTICS FOR L4940V12 (refer to the test circuits, Tj = 25 oC,
Vi = 14V, Ci = 0.1 µF, Co = 22 µF unless otherwise specified)
Symbol
Parameter
Vo Output Voltage
Vo Output Voltage
Vi Operating Input Voltage
∆Vo Line Regulation
∆Vo Load Regulation
IQ Quiescent Current
∆IQ Quiescent Current Change
∆Vo Output Voltage Drift
∆T
Test Conditions
Io = 500 mA
Io = 5 mA to 1500 mA
Vi = 13.8 to 17 V
Io = 5 mA
Io = 5 mA Vi = 13 to 17 V
Io = 5 to 1500 mA
Io = 500 to 1000 mA
Io = 5 mA
Io = 1.5 A Vi = 13.8 V
Io = 5 mA
Io = 1.5 A Vi = 13.8 to 16 V
Min.
11.75
11.5
Typ.
12
12
Max.
12 .2 5
12.5
17
37
15 35
10 25
48
30 50
1.5
10
1.2
SVR Supply Voltage Rejection
Vd Dropout Voltage
Is c Short Circuit Current
Zo Output Impedance
Io = 1 A f = 120 Hz
Io = 0.5 A
Io = 1.5 A
Vi = 14 V
f = 1KHz Io = 0.5A
55 61
200 400
500 900
2 2.7
40
Unit
V
V
V
mV
mV
mA
mA
m V/ oC
dB
mV
A
mΩ
5/13
5 Page 
DIM.
A
C
D
D1
E
F
F2
G
H2
H3
L2
L3
L5
L6
L7
Dia.
L4940 series
MIN.
2.4
1.2
0.35
0.61
1.15
4.95
10.05
26.3
2.6
15.1
6
3.65
TO-220 MECHANICAL DATA
mm
TYP.
5.08
16.2
26.7
MAX.
4.8
1.37
2.8
1.35
0.55
0.94
1.4
5.21
10.4
10.4
27.1
3
15.8
6.6
3.85
MIN.
0.094
0.047
0.014
0.024
0.045
0.195
0.396
1.035
0.102
0.594
0.236
0.144
inch
TYP.
0.200
0.638
1.051
MAX.
0.189
0.054
0.110
0.053
0.022
0.037
0.055
0.205
0.409
0.409
1.067
0.118
0.622
0.260
0.152
P011D
11/13
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet L4940.PDF ] | |
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