L78M00AB/AC
SERIES
PRECISION 500mA REGULATORS
s
s
s
s
s
s
s
OUTPUT CURRENT TO 0.5A
OUTPUT VOLTAGES OF 5; 6; 8; 9; 10; 12;
15; 18; 20; 24V
THERMAL OVERLOAD PROTECTION
SHORT CIRCUIT PROTECTION
OUTPUT TRANSITION SOA PROTECTION
±2% OUTPUT VOLTAGE TOLERANCE
GUARANTEED IN EXTENDED
TEMPERATURE RANGE
TO-220
DESCRIPTION
The L78M00AB series of three-terminal positive
regulators is available in TO-220 and DPAK
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
DPAK
voltage regulators, these devices can be used
with external components to obtain adjustable
voltage and currents.
SCHEMATIC DIAGRAM
October 2003
1/17
L78M00AB/AC SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol
V
I
I
O
P
tot
T
stg
T
op
DC Input Voltage
Output Current
Power Dissipation
Storage Temperature Range
Operating Junction Temperature for L78M00AC
Range
for L78M00AB
Parameter²
for V
O
= 5 to 18V
for V
O
= 20, 24V
Value
35
40
Internally Limited
Internally Limited
-65 to +150
0 to 125
-40 to 125
°C
°C
Unit
V
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
THERMAL DATA
Symbol
R
thj-case
R
thj-amb
Parameter
Thermal Resistance Junction-case
Thermal Resistance Junction-ambient
MAX
MAX
TO-220
3
50
DPAK
8
100
Unit
°C/W
°C/W
SHEMATIC DIAGRAM
2/17
L78M00AB/AC SERIES
ELECTRICAL CHARACTERISTICS OF L78M05XX
(refer to the test circuits, V
I
= 10V, I
O
= 350 mA,
C
I
= 0.33 µF, C
O
= 0.1 µF, T
J
= -40 to 125°C (AB), T
J
= 0 to 125°C (AC) unless otherwise specified)
Symbol
V
O
V
O
∆V
O
∆V
O
I
d
∆I
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
T
J
= 25°C
I
O
= 5 to 350 mA
V
I
= 7 to 20 V
T
J
= 25°C
T
J
= 25°C
V
I
= 7 to 25 V, I
O
= 200 mA
V
I
= 8 to 25 V, I
O
= 200 mA
I
O
= 5 to 500 mA
I
O
= 5 to 200 mA
T
J
= 25°C
I
O
= 5 to 350 mA
I
O
= 200 mA
∆V
O
/∆T Output Voltage Drift
SVR
eN
V
d
I
sc
I
scp
Supply Voltage Rejection
Output Noise Voltage
Dropout Voltage
Short Circuit Current
Short Circuit Peak Current
I
O
= 5 mA
V
I
= 8 to 18 V
I
O
= 300mA
B =10Hz to 100KHz
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
V
I
= 35 V
f = 120Hz
T
J
= 25°C
T
J
= 25°C
62
40
2
300
700
V
I
= 8 to 25 V
-0.5
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
4.9
4.8
Typ.
5
5
Max.
5.1
5.2
100
50
100
50
6
0.5
0.8
mV/°C
dB
µV
V
mA
mA
mA
mA
mV
Unit
V
V
mV
ELECTRICAL CHARACTERISTICS OF L78M06XX
(refer to the test circuits, V
I
= 11V, I
O
= 350 mA,
C
I
= 0.33 µF, C
O
= 0.1 µF, T
J
= -40 to 125°C (AB), T
J
= 0 to 125°C (AC) unless otherwise specified)
Symbol
V
O
V
O
∆V
O
∆V
O
I
d
∆I
d
Parameter
Output Voltage
Output Voltage
Line Regulation
Load Regulation
Quiescent Current
Quiescent Current Change
T
J
= 25°C
I
O
= 5 to 350 mA
V
I
= 8 to 21 V
T
J
= 25°C
T
J
= 25°C
V
I
= 8 to 25 V, I
O
= 200 mA
V
I
= 9 to 25 V, I
O
= 200 mA
I
O
= 5 to 500 mA
I
O
= 5 to 200 mA
T
J
= 25°C
I
O
= 5 to 350 mA
I
O
= 200 mA
∆V
O
/∆T Output Voltage Drift
SVR
eN
V
d
I
sc
I
scp
Supply Voltage Rejection
Output Noise Voltage
Dropout Voltage
Short Circuit Current
Short Circuit Peak Current
I
O
= 5 mA
V
I
= 9 to 19 V
I
O
= 300mA
B =10Hz to 100KHz
T
J
= 25°C
T
J
= 25°C
T
J
= 25°C
V
I
= 35 V
f = 120Hz
T
J
= 25°C
59
45
2
270
700
V
I
= 9 to 25 V
-0.5
T
J
= 25°C
T
J
= 25°C
Test Conditions
Min.
5.88
5.75
Typ.
6
6
Max.
6.12
6.3
100
30
120
60
6
0.5
0.8
mV/°C
dB
µV
V
mA
mA
mA
mA
mV
Unit
V
V
mV
5/17
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