SGS Thomson Microelectronics L78M24ACDT, L78M24ABV, L78M24ABDT, L78M12ABV, L78M20ABV Datasheet
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L78M00AB/AC
SERIES
March1997
PRECISION 500mA REGULATORS
.OUTPUT CURRENT UP TO 0.5A
.OUTPUT VOLTAGES OF 5; 6; 8; 9: 10; 12; 15;
18; 20; 24V
.THERMALOVERLOAD PROTECTION
.SHORT CIRCUIT PROTECTION
.OUTPUT TRANSISTORS SOAPROTECTION
.± 2% OUTPUTVOLTAGETOLERANCE
.GUARANTEED IN EXTENDED TEMPERA-
TURERANGES
DESCRI PTIO N
The L78M00AB series of three-therminal 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
employsinternalcurrentlimiting,thermalshut-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 asfixedvoltageregulators,these
devices can be used with external components to
obtainadjustable voltages and currents.
TO-220
BLOCK DIAGRAM
1
3
DPAK
(TO-252)
1/15
ABSOLUTE MAXIMUM RATINGS
Symbol Parameter Value Unit
V
i
DC Input Voltage (for Vo= 5 to 18V)
(for Vo= 20, 24V)
35
40
V
V
I
o
Output Current Internally Limited
P
tot
Power Dissipation Internally Limited
T
stg
Storage Temperature -65 to 150
o
C
T
j
Operating Junction Temperature for L78M00AC
L78M00AB
0 to 125
-40 to 125
o
C
o
C
THERMAL DATA
TO-220 DPAK
R
thj-case
R
thj-amb
Thermal Resistance Junction-case MAX
Thermal Resistance Junction-ambient MAX
3
50
8
100
o
C/W
o
C/W
CONN E CTION DI A G RAM AND ORDE R C O DES (top view)
Order Codes Output Voltage
0 to 125 oC -40 to 125 oC
DPAK TO-220 DPAK
L78M05ACDT L78M05ABV L78M05ABDT 5V
L78M06ACDT L78M06ABV L78M06ABDT 6V
L78M08ACDT L78M08ABV L78M08ABDT 8V
L78M09ACDT L78M09ABV L78M09ABDT 9V
L78M10ACDT L78M10ABV L78M10ABDT 10V
L78M12ACDT L78M12ABV L78M12ABDT 12V
L78M15ACDT L78M15ABV L78M15ABDT 15V
L78M18ACDT L78M18ABV L78M18ABDT 18V
L78M20ACDT L78M20ABV L78M20ABDT 20V
L78M24ACDT L78M24ABV L78M24ABDT 24V
TO - 220 DPAK
L78M00AB/AC SERIES
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APPLICATION CIRCUIT
SCHEM ATIC DIA GRA M
L78M00AB/AC SERIES
3/15
TEST CIRCUITS
Figure 1 : DC Parameters. Figure 2 : Load Regulation.
Figure 3 : Ripple Rejection.
L78M00AB/AC SERIES
4/15
ELECTRICAL CHARACTERISTICS FOR L78M05XX (refer to the test circuits, Vi= 10V, Io= 350 mA,
Ci= 0.33 µF, Co= 0.1 µF, Tj= -40 to 125oC (AB), Tj= 0 to 125oC (AC) unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage Tj=25oC 4.9 5 5.1 V
V
o
Output Voltage Io= 5 mA to 350 mA
Vi= 7 to 20 V
4.8 5 5.2 V
∆V
o
Line Regulation Io= 200 mA Tj=25oC
Vi= 7 to 25 V
Vi= 8 to 25 V
100
30
mV
mV
∆V
o
Load Regulation Io= 5 to 500 mA Tj=25oC
I
o
= 5 to 200 mA Tj=25oC
100
50
mV
mV
I
d
Quiescent Current Tj=25oC6mA
∆I
d
Quiescent Current Change Io= 5 to 350 mA 0.5 mA
∆I
d
Quiescent Current Change Io = 200 mA Vi= 8 to 25 V 0.8 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA -0.5 mV/oC
e
N
Output Noise Voltage B = 10Hz to 100KHz Tj=25oC40µV
SVR Supply Voltage Rejection Io = 300 mA f = 120 Hz T
j
=25oC
Vi= 8 to 18 V
62 dB
V
d
Dropout Voltage Tj=25oC2V
I
sc
Short Circuit Current Tj=25oCVi= 35 V 300 mA
I
scp
Short Circuit Peack Current Tj=25oC 700 mA
ELECTRICAL CHARACTERISTICS FOR L78M06XX (refer to the test circuits, Vi= 11V, Io= 350 mA,
Ci= 0.33 µF, Co= 0.1 µF, Tj= -40 to 125oC (AB), Tj= 0 to 125oC (AC) unless otherwise specified)
Symbol Parameter Test Conditions Min. Typ. Max. Unit
V
o
Output Voltage Tj=25oC 5.88 6 6.12 V
V
o
Output Voltage Io= 5 mA to 350 mA
Vi= 8 to 21 V
5.75 6 6.3 V
∆V
o
Line Regulation Io= 200 mA Tj=25oC
Vi= 8 to 25 V
Vi= 9 to 25 V
100
30
mV
mV
∆V
o
Load Regulation Io= 5 to 500 mA Tj=25oC
Io= 5 to 200 mA Tj=25oC
120
60
mV
mV
I
d
Quiescent Current Tj=25oC6mA
∆I
d
Quiescent Current Change Io= 5 to 350 mA 0.5 mA
∆I
d
Quiescent Current Change Io = 200 mA Vi= 9 to 25 V 0.8 mA
∆
V
o
∆
T
Output Voltage Drift Io= 5 mA -0.5 mV/oC
e
N
Output Noise Voltage B = 10Hz to 100KHz Tj=25oC45µV
SVR Supply Voltage Rejection Io = 300 mA f = 120 Hz T
j
=25oC
Vi= 9 to 19 V
59 dB
V
d
Dropout Voltage Tj=25oC2V
I
sc
Short Circuit Current Tj=25oCVi= 35 V 270 mA
I
scp
Short Circuit Peack Current Tj=25oC 700 mA
L78M00AB/AC SERIES
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