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January 2004
s
OUTPUT CURRENT TO 0.5A
s
OUTPUT VOLTAGES OF 5; 6; 8; 9; 12; 15;
18; 20; 24V
s
THERMAL OVERLOAD PROTECTION
s
SHORT CIRCUIT PROTECTION
s
OUTPUT TRANSITION SOA PROTECTION
DESCRIPTION
The L78M00 series of three-terminal positive
regulators is available in TO-220, TO-220FP,
DPAK and IPAK packages and with several fixed
output voltages, making it useful in a wide range of
applications. These regulators can provide local
on-card regulation, eliminating the distribution
problems associated with single point regulation.
Each type employs internal current limiting,
thermal shut-down and safe area protection,
making it essentially indestructible. If adequate
heat sinking is provided, they can deliver over
0.5A output current. Although designed primarily
as fixed voltage regulators, these devices can be
used
with
external
components
to
obtain
adjustable voltage and currents.
L78M00
SERIES
POSITIVE VOLTAGE REGULATORS
SCHEMATIC DIAGRAM
TO-220
DPAK
TO-220FP
IPAK
L78M00 SERIES
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ABSOLUTE MAXIMUM RATINGS
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
THERMAL DATA
SHEMATIC DIAGRAM
Symbol
Parameter
Value
Unit
V
I
DC Input Voltage
(for V
O
= 5 to 18V)
(for V
O
= 20, 24V)
35
40
V
V
I
O
Output Current
Internally Limited
mA
P
D
Power Dissipation
Internally Limited
mW
T
stg
Storage Temperature Range
-65 to +150
C
T
op
Operating Junction Temperature Range
0 to +150
C
Symbol
Parameter
TO-220
TO-220FP
DPAK
IPAK
Unit
R
thj-case
Thermal Resistance Junction-case
3
5
8
C/W
R
thj-amb
Thermal Resistance Junction-ambient
50
60
100
C/W
L78M00 SERIES
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ELECTRICAL CHARACTERISTICS OF L78M05C (refer to the test circuits, T
J
= 25C, V
I
= 10V,
I
O
= 350 mA, C
I
= 0.33 F, C
O
= 0.1 F unless otherwise specified).
ELECTRICAL CHARACTERISTICS OF L78M06C (refer to the test circuits, T
J
= 25C, V
I
= 11V,
I
O
= 350 mA, C
I
= 0.33 F, C
O
= 0.1 F unless otherwise specified).
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
O
Output Voltage
4.8
5
5.2
V
V
O
Output Voltage
I
O
= 5 to 350 mA
V
I
= 7 to 20 V
4.75
5
5.25
V
V
O
Line Regulation
V
I
= 7 to 25 V
I
O
= 200 mA
100
mV
V
I
= 8 to 25 V
I
O
= 200 mA
50
V
O
Load Regulation
I
O
= 5 to 500 mA
T
J
= 25C
100
mV
I
O
= 5 to 200 mA
T
J
= 25C
50
I
d
Quiescent Current
6
mA
I
d
Quiescent Current Change
I
O
= 5 to 350 mA
0.5
mA
I
O
= 200 mA
V
I
= 8 to 25 V
0.8
V
O
/
T Output Voltage Drift
I
O
= 5 mA
T
J
= 0 to 125C
-0.5
mV/C
SVR
Supply Voltage Rejection
V
I
= 8 to 18 V
f = 120Hz
I
O
= 300mA
62
dB
eN
Output Noise Voltage
B =10Hz to 100KHz
40
V
V
d
Dropout Voltage
2
V
I
sc
Short Circuit Current
V
I
= 35 V
300
mA
Symbol
Parameter
Test Conditions
Min.
Typ.
Max.
Unit
V
O
Output Voltage
5.75
6
6.25
V
V
O
Output Voltage
I
O
= 5 to 350 mA
V
I
= 8 to 21 V
5.7
6
6.3
V
V
O
Line Regulation
V
I
= 8 to 25 V
I
O
= 200 mA
100
mV
V
I
= 9 to 25 V
I
O
= 200 mA
50
V
O
Load Regulation
I
O
= 5 to 500 mA
T
J
= 25C
120
mV
I
O
= 5 to 200 mA
T
J
= 25C
60
I
d
Quiescent Current
6
mA
I
d
Quiescent Current Change
I
O
= 5 to 350 mA
0.5
mA
I
O
= 200 mA
V
I
= 9 to 25 V
0.8
V
O
/
T Output Voltage Drift
I
O
= 5 mA
T
J
= 0 to 125C
-0.5
mV/C
SVR
Supply Voltage Rejection
V
I
= 9 to 19 V
f = 120Hz
I
O
= 300mA
59
dB
eN
Output Noise Voltage
B =10Hz to 100KHz
45
V
V
d
Dropout Voltage
2
V
I
sc
Short Circuit Current
V
I
= 35 V
270
mA
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