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PDF L79L08C Datasheet ( Hoja de datos )

Número de pieza L79L08C
Descripción NEGATIVE VOLTAGE REGULATORS
Fabricantes STMicroelectronics 
Logotipo STMicroelectronics Logotipo

Total 13 Páginas
		
L79L08C Hoja de datos, Descripción, Manual
L79L00
® SERIES
NEGATIVE VOLTAGE REGULATORS
s OUTPUT CURRENT UP TO 100 mA
s OUTPUT VOLTAGES OF-5; -6; -8; -9; -12;
-15V
s THERMAL OVERLOAD PROTECTION
s SHORT CIRCUIT PROTECTION
s NO EXTERNAL COMPONENTS ARE
REQUIRED
s AVAILABLEIN EITHER ± 5% (AC) OR ± 10%
(C) SELECTION
DESCRIPTION
The L79L00 series of three-terminal positive
regulators employ internal current limiting and
thermal shutdown, making them essentially
indestructible. If adequate heatsink is provided,
they can deliver up to 100 mA output current.
They are intended as fixed voltage regulators in a
wide range of applications including local or
on-card regulation for elimination of noise and
distribution problems associated with single-point
regulation. In addition, they can be used with
power pass elements to make high-current
voltage regulators.
The L79L00 series used as Zener diode/resistor
combination replacement, offers an effective
SO-8
SOT-89
TO-92
output impedance improvement of typically two
orders of magnetude, along with lower quiescent
current and lower noise.
BLOCK DIAGRAM
December 1999
1/13

1 page

L79L08C pdf
L79L00
ELECTRICAL CHARACTERISTICS FOR L79L08 (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -14V, Io = 40 mA, Ci = 0.33 µF, Co = 0.1 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Vo Output Voltage
Tj = 25 oC
-7.36 -8 -8.64
Vo Output Voltage
Vo Line Regulation
Vo Load Regulation
Id Quiescent Current
Io = 1 to 40 mA Vi = -10.5 to -23 V
Io = 1 to 70 mA Vi = -14 V
Vi = -10.5 to -23 V Tj = 25 oC
Vi = -11 to -23 V Tj = 25 oC
Io = 1 to 100 mA Tj = 25 oC
Io = 1 to 40 mA Tj = 25 oC
Tj = 25 oC
Tj = 125 oC
-7.2
-7.2
- 8. 8
- 8. 8
2 00
1 50
80
40
6
5.5
Id Quiescent Current Change Io = 1 to 40 mA
0.2
Id
eN
SVR
Quiescent Current Change
Output Noise Voltage
Supply Voltage Rejection
Vi = -11 to -23 V
B = 10Hz to 100KHz Tj = 25 oC
Io = 40 mA f = 120 Hz Tj = 25 oC
Vi = -12 to -23 V
1.5
60
36 45
Vd Dropout Voltage
1.7
Unit
V
V
V
mV
mV
mV
mV
mA
mA
mA
mA
µV
dB
V
ELECTRICAL CHARACTERISTICS FOR L79L09 (refer to the test circuits, Tj = 0 to 125 oC,
Vi = -15V, Io = 40 mA, Ci = 0.33 µF, Co = 0.1 µF unless otherwise specified)
Symbol
Parameter
Test Conditions
Min. Typ. Max.
Vo Output Voltage
Tj = 25 oC
-8.28 -9 -9.72
Vo Output Voltage
Vo Line Regulation
Vo Load Regulation
Id Quiescent Current
Io = 1 to 40 mA Vi = -11.5 to -23 V
Io = 1 to 70 mA Vi = -15 V
Vi = -11.5 to -23 V Tj = 25 oC
Vi = -12 to -23 V Tj = 25 oC
Io = 1 to 100 mA Tj = 25 oC
Io = 1 to 40 mA Tj = 25 oC
Tj = 25 oC
Tj = 125 oC
-8.1
-8.1
- 9. 9
- 9. 9
2 50
2 00
80
40
6
5.5
Id Quiescent Current Change Io = 1 to 40 mA
0.2
Id Quiescent Current Change
eN Output Noise Voltage
Vi = -12 to -23 V
B = 10Hz to 100KHz Tj = 25 oC
1.5
70
SVR Supply Voltage Rejection
Io = 40 mA f = 120 Hz Tj = 25 oC
Vi = -12 to -23 V
36 44
Vd Dropout Voltage
1.7
Unit
V
V
V
mV
mV
mV
mV
mA
mA
mA
mA
µV
dB
V
5/13

5 Page

L79L08C arduino
DIM.
A
B
B1
C
C1
D
D1
E
e
e1
H
L
MIN.
1.4
0.44
0.36
0.35
0.35
4.4
1.62
2.29
1.42
2.92
3.94
0.89
SOT-89 MECHANICAL DATA
mm
TYP.
MAX.
1.6
0.56
0.48
0.44
0.44
4.6
1.83
2.6
1.57
3.07
4.25
1.2
MIN.
55.1
17.3
14.2
13.8
13.8
173.2
63.8
90.2
55.9
115.0
155.1
35.0
mils
TYP.
L79L00
MAX.
63.0
22.0
18.9
17.3
17.3
181.1
72.0
102.4
61.8
120.9
167.3
47.2
P025H
11/13

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