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POSITIVE VOLTAGE REGULATORS
L78L00
SERIES
POSITIVE VOLTAGE REGULATORS
n
OUTPUT CURRENT UP TO 100 mA
OUTPUT VOLTAGES OF 3.3; 5; 6; 8; 9; 12;
15; 18; 24V
n
THERMAL OVERLOAD PROTECTION
n
SHORT CIRCUIT PROTECTION
n
n
NO EXTERNAL COMPONENTS ARE
REQUIRED
SO-8
n
AVAILABLE IN EITHER
±
5% (AC) OR
±
10%
(C) SELECTION
DESCRIPTION
The L78L00 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 L78L00 series used as Zener diode/resistor
combination replacement, offers an effective
TO-92
output impedance improvement of typically two
orders of magnetude, along with lower quiescent
current and lower noise.
BLOCK DIAGRAM
March 1998
1/17
L78L00
ABSOLUTE MAXIMUM RATING
Symbol
Parameter
Value
Unit
V
i
DC Input Voltage
V
o
= 3.3 V to 9 V
30
V
V
o
= 12 V to 15 V
35
V
V
o
= 18 V to 24 V
40
V
I
o
Output Current
100
mA
P
tot
Power Dissipation
I nternally limited (*)
T
stg
Storage Temperature Range
- 40 t o 150
o
C
o
C
o
C
(*) Our SO-8 package used for Voltage Regulators is modified internally to have pins 2, 3, 6 and 7 electrically commoned to the die attach
flag. This particular frame decreases the total thermal resistance of the package and increases its ability to dissipate power when an
appropriate area of copper on the printed circuit board is available for heatsinking. The external dimensions are the same as for the standard
SO-8
Operating Junction Temperature RangeFor L78L00C, L78L00AC
For L78L00AB
0to125
- 40 to 125
TEST CIRCUITS
2/17
T
op
L78L00
CONNECTION DIAGRAM AND ORDERING NUMBERS
(top view)
BOTTOM VIEW
pin 1 = OUT
pin 2 = GND
pin 3 = IN
SO-8
TO-92
ORDERING NUMBERS
Type
SO-8
TO-92
Output Voltage
L78L33AC
L78L33AB
L78L05C
L78L05AC
L78L05AB
L78L06C
L78L06AC
L78L06AB
L78L08C
L78L08AC
L78L08AB
L78L09C
L78L09AC
L78L09AB
L78L12C
L78L12AC
L78L12AB
L78L15C
L78L15AC
L78L15AB
L78L18C
L78L18AC
L78L18AB
L78L24C
L78L24AC
L78L24AB
L78L33ACD
L78L33ABD
L78L05CD
L78L05ACD
L78L05ABD
L78L06CD
L78L06ACD
L78L06ABD
L78L08CD
L78L08ACD
L78L08ABD
L78L09CD
L78L09ACD
L78L09ABD
L78L12CD
L78L12ACD
L78L12ABD
L78L15CD
L78L15ACD
L78L15ABD
L78L18CD
L78L18ACD
L78L18ABD
L78L24CD
L78L24ACD
L78L24ABD
L78L33ACZ
L78L33ABZ
L78L05CZ
L78L05ACZ
L78L05ABZ
L78L06CZ
L78L06ACZ
L78L06ABZ
L78L08CZ
L78L08ACZ
L78L08ABZ
L78L09CZ
L78L09ACZ
L78L09ABZ
L78L12CZ
L78L12ACZ
L78L12ABZ
L78L15CZ
L78L15ACZ
L78L15ABZ
L78L18CZ
L78L18ACZ
L78L18ABZ
L78L24CZ
L78L24ACZ
L78L24ABZ
3.3 V
3.3 V
5V
5V
5V
6V
6V
6V
8V
8V
8V
9V
9V
9V
12 V
12 V
12 V
15 V
15 V
15 V
18 V
18 V
18 V
24 V
24 V
24 V
3/17
L78L00
ELECTRICAL CHARACTERISTICS FOR L78L05
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= 10V, I
o
= 40 mA, C
i
= 0.33
m
F, C
o
= 0.1
m
F unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
o
Output Voltage
T
j
=25
o
C
4.6
5
5.4
V
V
o
Output Voltage
I
o
= 1 to 40 mA V
i
= 7 to 20 V
I
o
= 1 to 70 mA V
i
=10V
4.5
4.5
5.5
5.5
V
V
D
V
o
Line Regulation
V
i
=7to20V T
j
=25
o
C
V
i
=8to20V T
j
=25
o
C
200
150
mV
mV
D
V
o
Load Regulation
I
o
= 1 to 100 mA T
j
=25
o
C
I
o
= 1 to 40 mA
T
j
=25
o
C
60
30
mV
mV
I
d
Quiescent Current
T
j
=25
o
C
T
j
= 125
o
C
6
5.5
mA
mA
D
I
d
Quiescent Current Change
I
o
= 1 to 40 mA
0.2
mA
D
I
d
Quiescent Current Change
V
i
=8to20V
1.5
mA
eN
Output Noise Voltage
B = 10Hz to 100KHz T
j
=25
o
C
40
m
V
SVR Supply Voltage Rejection
I
o
= 40 mA f = 120 Hz T
j
=25
o
C
V
i
= 8 to 18 V
40
49
dB
V
d
Dropout Voltage
1. 7
V
ELECTRICAL CHARACTERISTICS FOR L78L06
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= 12V, I
o
= 40 mA, C
i
= 0.33
m
F, C
o
= 0.1
m
F unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
o
Output Voltage
T
j
=25
o
C
5.52
6
6.48
V
V
o
Output Voltage
I
o
= 1 to 40 mA V
i
= 8.5 to 20 V
I
o
= 1 to 70 mA V
i
=12V
5.4
5.4
6.6
6.6
V
V
D
V
o
Line Regulation
V
i
= 8.5 to 20 V T
j
=25
o
C
V
i
=9to20V T
j
=25
o
C
200
150
mV
mV
D
V
o
Load Regulation
I
o
= 1 to 100 mA T
j
=25
o
C
I
o
= 1 to 40 mA
T
j
=25
o
C
60
30
mV
mV
I
d
Quiescent Current
T
j
=25
o
C
T
j
= 125
o
C
6
5.5
mA
mA
D
I
d
Quiescent Current Change
I
o
= 1 to 40 mA
0.2
mA
D
I
d
Quiescent Current Change
V
i
=8to20V
1.5
mA
eN
Output Noise Voltage
B = 10Hz to 100KHz T
j
=25
o
C
50
m
V
SVR Supply Voltage Rejection
I
o
= 40 mA f = 120 Hz T
j
=25
o
C
V
i
= 9 to 20 V
38
46
dB
V
d
Dropout Voltage
1. 7
V
4/17
L78L00
ELECTRICAL CHARACTERISTICS FOR L78L08
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= 14V, I
o
= 40 mA, C
i
= 0.33
m
F, C
o
= 0.1
m
F unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
o
Output Voltage
T
j
=25
o
C
7.36
8
8.64
V
V
o
Output Voltage
I
o
= 1 to 40 mA V
i
= 10.5 to 23 V
I
o
= 1 to 70 mA V
i
=14V
7.2
7.2
8.8
8.8
V
V
D
V
o
Line Regulation
V
i
= 10.5 to 23 V T
j
=25
o
C
V
i
=11to23V T
j
=25
o
C
200
150
mV
mV
D
V
o
Load Regulation
I
o
= 1 to 100 mA T
j
=25
o
C
I
o
= 1 to 40 mA
T
j
=25
o
C
80
40
mV
mV
I
d
Quiescent Current
T
j
=25
o
C
T
j
= 125
o
C
6
5.5
mA
mA
D
I
d
Quiescent Current Change
I
o
= 1 to 40 mA
0.2
mA
D
I
d
Quiescent Current Change
V
i
=11to23V
1.5
mA
eN
Output Noise Voltage
B = 10Hz to 100KHz T
j
=25
o
C
60
m
V
SVR Supply Voltage Rejection
I
o
= 40 mA f = 120 Hz T
j
=25
o
C
V
i
=12to23V
36
45
dB
V
d
Dropout Voltage
1. 7
V
ELECTRICAL CHARACTERISTICS FOR L78L09
(refer to the test circuits, T
j
= 0 to 125
o
C,
V
i
= 15V, I
o
= 40 mA, C
i
= 0.33
m
F, C
o
= 0.1
m
F unless otherwise specified)
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
o
Output Voltage
T
j
=25
o
C
8.28
9
9.72
V
V
o
Output Voltage
I
o
= 1 to 40 mA V
i
= 11.5 to 23 V
I
o
= 1 to 70 mA V
i
=15V
8.1
8.1
9.9
9.9
V
V
D
V
o
Line Regulation
V
i
= 11.5 to 23 V T
j
=25
o
C
V
i
=12to23V T
j
=25
o
C
250
200
mV
mV
D
V
o
Load Regulation
I
o
= 1 to 100 mA T
j
=25
o
C
I
o
= 1 to 40 mA
T
j
=25
o
C
80
40
mV
mV
I
d
Quiescent Current
T
j
=25
o
C
T
j
= 125
o
C
6
5.5
mA
mA
D
I
d
Quiescent Current Change
I
o
= 1 to 40 mA
0.2
mA
D
I
d
Quiescent Current Change
V
i
=12to23V
1.5
mA
eN
Output Noise Voltage
B = 10Hz to 100KHz T
j
=25
o
C
70
m
V
SVR Supply Voltage Rejection
I
o
= 40 mA f = 120 Hz T
j
=25
o
C
V
i
=12to23V
36
44
dB
V
d
Dropout Voltage
1. 7
V
5/17
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