ST L78M00AB, L78M00AC User Manual
PRECISION 500mA REGULATORS
■ 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 INEXTENDED
TEMPERATURE RANGE
DESCRIPTION
The L78M00AB series of three-terminal positive
regulators is available in TO-220 and DPAK
packages and with several fixed outp ut 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
L78M00AB/AC
SERIES
TO-220
DPAK
voltage regulators, these devices can be used
with external components to obtain adjustable
voltage an d currents.
SCHEMATIC DIAGRAM
1/17October 2003
L78M00AB/AC SERIES
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter² Value Unit
V
I
P
T
T
Absolute Maximum Ratings are those values beyond which damage to the device may occur. Functional operation under these condition is
not implied.
DC Input Voltage for VO= 5 to 18V
I
Output Current
O
Power Dissipation
tot
Storage Temperature Range
stg
OperatingJunctionTemperature
op
Range
= 20, 24V
for V
O
for L78M00AC 0 to 125
for L78M00AB -40 to 125
THERMAL DATA
Symbol Parameter TO-220 DPAK Unit
R
thj-case
R
thj-amb
Thermal Resistance Junction-case MAX
Thermal Resistance Junction-ambient MAX
38°C/W
50 100 °C/W
SHEMATIC DIAGRAM
35
40
Internally Limited
Internally Limited
-65 to +150 °C
V
°C
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CONNECTION DIAGRAM (t op v iew)
TO-220 DPAK
ORDERING CODES
TYPE TO-220 DPAK (*) OUTPUT VOLTAGE
L78M05AB L78M05ABV L78M05ABDT 5 V
L78M05AC L78M05ACDT 5 V
L78M06AB L78M06ABV L78M06ABDT 6 V
L78M06AC L78M06ACDT 6 V
L78M08AB L78M08ABV L78M08ABDT 8 V
L78M08AC L78M08ACDT 8 V
L78M09AB L78M09ABV L78M09ABDT 9 V
L78M09AC L78M09ACDT 9 V
L78M10AB L78M10ABV L78M10ABDT 10 V
L78M10AC L78M10ACDT 10 V
L78M12AB L78M12ABV L78M12ABDT 12 V
L78M12AC L78M12ACDT 12 V
L78M15AB L78M15ABV L78M15ABDT 15 V
L78M15AC L78M15ACDT 15 V
L78M18AB L78M18ABV L78M18ABDT 18 V
L78M18AC L78M18ACDT 18 V
L78M20AB L78M20ABV L78M20ABDT 20 V
L78M20AC L78M20ACDT 20 V
L78M24AB L78M24ABV L78M24ABDT 24 V
L78M24AC L78M24ACDT 24 V
L78M00AB/AC SE RIES
(*) Available in Tape & Reel with the suffix "-TR".
APPLICATION CIRCUITS
3/17
L78M00AB/AC SERIES
TEST CIRCUITS
Figure1 : DC Parameter
Figure2 : Load Regulation
Figure3 : Ripple Rejection
4/17
L78M00AB/AC SE RIES
ELECTRICAL CHARACTERISTICS OF L78M05XX (refer to the t est circuits, VI= 10V, IO=350mA,
C
=0.33µF,CO=0.1µF,TJ= -40 to 125°C (AB), TJ= 0 to 125°C (AC) unless otherwise specified)
I
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
Output Voltage TJ= 25°C 4.9 5 5.1 V
O
Output Voltage IO= 5 to 350 mA VI= 7 to 20 V 4.8 5 5.2 V
V
O
∆V
∆V
∆V
SVR Supply Voltage Rejection V
Line Regulation VI= 7 to 25 V, IO= 200 mA TJ= 25°C 100 mV
O
= 8 to 25 V, IO= 200 mA TJ=25°C 50
V
I
Load Regulation IO= 5 to 500 mA TJ= 25°C 100 mV
O
I
= 5 to 200 mA TJ= 25°C 50
O
Quiescent Current TJ= 25°C 6 mA
I
d
Quiescent Current Change IO= 5 to 350 mA 0.5 mA
∆I
d
= 200 mA VI= 8 to 25 V 0.8
I
O
/∆T Output Voltage Drift IO= 5 mA -0.5 mV/°C
O
= 8 to 18 V f = 120Hz
I
= 300mA TJ= 25°C
I
O
eN Output Noise Voltage B =10Hz to 100KHz T
Dropout Voltage TJ= 25°C 2 V
V
d
Short Circuit Current TJ= 25°C VI= 35 V 300 mA
I
sc
Short Circuit Peak Current TJ= 25°C 700 mA
I
scp
= 25°C 40 µV
J
62 dB
ELECTRICAL CHARACTERISTICS OF L78M06XX (refer to the t est circuits, V
C
=0.33µF,CO=0.1µF,TJ= -40 to 125°C (AB), TJ= 0 to 125°C (AC) unless otherwise specified)
I
= 11V, IO=350mA,
I
Symbol Parameter Test Conditions Min. Typ. Max. Unit
Output Voltage TJ= 25°C 5.88 6 6.12 V
V
O
Output Voltage IO= 5 to 350 mA VI= 8 to 21 V 5.75 6 6.3 V
V
O
∆V
∆V
∆V
SVR Supply Voltage Rejection V
Line Regulation VI= 8 to 25 V, IO= 200 mA TJ= 25°C 100 mV
O
= 9 to 25 V, IO= 200 mA TJ=25°C 30
V
I
Load Regulation IO= 5 to 500 mA TJ= 25°C 120 mV
O
= 5 to 200 mA TJ= 25°C 60
I
O
Quiescent Current TJ= 25°C 6 mA
I
d
∆I
Quiescent Current Change IO= 5 to 350 mA 0.5 mA
d
= 200 mA VI= 9 to 25 V 0.8
I
O
/∆T Output Voltage Drift IO= 5 mA -0.5 mV/°C
O
= 9 to 19 V f = 120Hz
I
I
= 300mA TJ= 25°C
O
59 dB
eN Output Noise Voltage B =10Hz to 100KHz 45 µV
V
Dropout Voltage TJ= 25°C 2 V
d
Short Circuit Current TJ= 25°C VI= 35 V 270 mA
I
sc
Short Circuit Peak Current TJ= 25°C 700 mA
I
scp
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L78M00AB/AC SERIES
ELECTRICAL CHARACTERISTICS OF L78M08XX (refer to the t est circuits, VI= 14V, IO=350mA,
C
=0.33µF,CO=0.1µF,TJ= -40 to 125°C (AB), TJ= 0 to 125°C (AC) unless otherwise specified)
I
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
Output Voltage TJ= 25°C 7.84 8 8.16 V
O
Output Voltage IO= 5 to 350 mA VI= 10.5 to 23 V 7.7 8 8.3 V
V
O
∆V
∆V
∆V
SVR Supply Voltage Rejection V
Line Regulation VI= 10.5 to 25 V, IO= 200 mA TJ= 25°C 100 mV
O
=11to25V,IO= 200 mA TJ= 25°C 30
V
I
Load Regulation IO= 5 to 500 mA TJ= 25°C 160 mV
O
I
= 5 to 200 mA TJ= 25°C 80
O
Quiescent Current TJ= 25°C 6 mA
I
d
Quiescent Current Change IO= 5 to 350 mA 0.5 mA
∆I
d
= 200 mA VI= 10.5 to 25 V 0.8
I
O
/∆T Output Voltage Drift IO= 5 mA -0.5 mV/°C
O
= 11.5 to 21.5 V f = 120Hz
I
= 300mA TJ= 25°C
I
O
eN Output Noise Voltage B =10Hz to 100KHz T
Dropout Voltage TJ= 25°C 2 V
V
d
Short Circuit Current TJ= 25°C VI= 35 V 250 mA
I
sc
Short Circuit Peak Current TJ= 25°C 700 mA
I
scp
= 25°C 52 µV
J
56 dB
ELECTRICAL CHARACTERISTICS OF L78M09XX (refer to the t est circuits, V
=0.33µF,CO=0.1µF,TJ= -40 to 125°C (AB), TJ= 0 to 125°C (AC) unless otherwise specified)
C
I
= 14V, IO=350mA,
I
Symbol Parameter Test Conditions Min. Typ. Max. Unit
Output Voltage TJ= 25°C 8.82 9 9.18 V
V
O
Output Voltage IO= 5 to 350 mA VI= 11.5 to 24 V 8.64 9 9.36 V
V
O
∆V
∆V
∆V
SVR Supply Voltage Rejection V
Line Regulation VI= 11.5 to 25 V, IO= 200 mA TJ= 25°C 100 mV
O
=12to25V,IO= 200 mA TJ=25°C 30
V
I
Load Regulation IO= 5 to 500 mA TJ= 25°C 180 mV
O
= 5 to 200 mA TJ= 25°C 90
I
O
Quiescent Current TJ= 25°C 6 mA
I
d
∆I
Quiescent Current Change IO= 5 to 350 mA 0.5 mA
d
= 200 mA VI= 11.5 to 25 V 0.8
I
O
/∆T Output Voltage Drift IO= 5 mA -0.5 mV/°C
O
= 12.5 to 23 V f = 120Hz
I
I
= 300mA TJ= 25°C
O
eN Output Noise Voltage B =10Hz to 100KHz T
Dropout Voltage TJ= 25°C 2 V
V
d
I
Short Circuit Current TJ= 25°C VI= 35 V 250 mA
sc
Short Circuit Peak Current TJ= 25°C 700 mA
I
scp
= 25°C 52 µV
J
56 dB
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