TL/H/7744
LM78LXX Series 3-Terminal Positive Regulators
February 1995
LM78LXX Series 3-Terminal Positive Regulators
General Description
The LM78LXX series of three terminal positive regulators is
available with several fixed output voltages making them
useful in a wide range of applications. When used as a ze-
ner diode/resistor combination replacement, the LM78LXX
usually results in an effective output impedance improve-
ment of two orders of magnitude, and lower quiescent cur-
rent. These regulators can provide local on card regulation,
eliminating the distribution problems associated with single
point regulation. The voltages available allow the LM78LXX
to be used in logic systems, instrumentation, HiFi, and other
solid state electronic equipment.
The LM78LXX is available in the metal three-lead TO-39(H)
package, the plastic TO-92 (Z) package, and the plastic
SO-8 (M) package. With adequate heat sinking the regulator
can deliver 100 mA output current. Current limiting is includ-
ed to limit the peak output current to a safe value. Safe area
protection for the output transistors is provided to limit inter-
nal power dissipation. If internal power dissipation becomes
too high for the heat sinking provided, the thermal shutdown
circuit takes over preventing the IC from overheating.
Features
YOutput voltage tolerances of g5% (LM78LXXAC) over
the temperature range
YOutput current of 100 mA
YInternal thermal overload protection
YOutput transistor safe area protection
YInternal short circuit current limit
YAvailable in plastic TO-92 and metal TO-39 and plastic
SO-8 low profile packages
YNo external components
YOutput voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V, 15V
Connection Diagrams
(TO-39)
Metal Can Package (H)
TL/H/77441
Bottom View
Order Number LM78L05ACH,
LM78L12ACH or LM78L15ACH
See NS Package Number H03A
SO-8 Plastic (M)
(Narrow Body)
TL/H/77442
Top View
Order Number LM78L05ACM,
LM78L12ACM or LM78L15ACM
See NS Package Number M08A
(TO-92)
Plastic Package (Z)
TL/H/77443
Bottom View
Order Number
LM78L05ACZ, LM78L09ACZ,
LM78L12ACZ, LM78L15ACZ,
LM78L62ACZ or LM78L82ACZ
See NS Package Number Z03A
C1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.
Absolute Maximum Ratings (Note 1)
If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
Power Dissipation (Note 5) Internally Limited
Input Voltage 35V
Storage Temperature b65§Ctoa
150§C
Operating Junction Temperature 0§Ctoa
125§C
Lead Temperature (Soldering, 10 seconds) 265§C
ESD Susceptibility (Note 2) 2 kV
LM78LXXAC Electrical Characteristics
Limits in standard typeface are for TJe25§C, bold typeface applies over the 0§Ctoa
125§C temperature range. Limits are
guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless
otherwise specified: IOe40 mA, CIe0.33 mF, COe0.1 mF.
LM78L05AC Unless otherwise specified, VIN e10V
Symbol Parameter Conditions Min Typ Max Units
VOOutput Voltage 4.8 5 5.2
V
7V sVIN s20V
1mAsI
Os40 mA 4.75 5.25
(Note 3)
1mAsI
Os70 mA 4.75 5.25
(Note 3)
DVOLine Regulation 7V sVIN s20V 18 75
mV
8V sVIN s20V 10 54
DVOLoad Regulation 1 mA sIOs100 mA 20 60
1mAsI
Os40 mA 5 30
IQQuiescent Current 3 5
mA
DIQQuiescent Current Change 8V sVIN s20V 1.0
1mAsI
Os40 mA 0.1
VnOutput Noise Voltage f e10 Hz to 100 kHz 40 mV
(Note 4)
DVIN
DVOUT
Ripple Rejection f e120 Hz 47 62 dB
8V sVIN s16V
IPK Peak Output Current 140 mA
DVO
DT
Average Output Voltage Tempco IOe5mA b
0.65 mV/§C
VIN Minimum Value of Input Voltage 6.7 7 V
(Min) Required to Maintain Line Regulation
2
LM78LXXAC Electrical Characteristics
Limits in standard typeface are for TJe25§C, bold typeface applies over the 0§Ctoa
125§C temperature range. Limits are
guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless
otherwise specified: IOe40 mA, CIe0.33 mF, COe0.1 mF. (Continued)
LM78L62AC Unless otherwise specified, VIN e12V
Symbol Parameter Conditions Min Typ Max Units
VOOutput Voltage 5.95 6.2 6.45
V
8.5V sVIN s20V
1mAsI
Os40 mA 5.9 6.5
(Note 3)
1mAsI
Os70 mA 5.9 6.5
(Note 3)
DVOLine Regulation 8.5V sVIN s20V 65 175
mV
9V sVIN s20V 55 125
DVOLoad Regulation 1 mA sIOs100 mA 13 80
1mAsI
Os40 mA 6 40
IQQuiescent Current 2 5.5
mA
DIQQuiescent Current Change 8V sVIN s20V 1.5
1mAsI
Os40 mA 0.1
VnOutput Noise Voltage f e10 Hz to 100 kHz 50 mV
(Note 4)
DVIN
DVOUT
Ripple Rejection f e120 Hz 40 46 dB
10V sVIN s20V
IPK Peak Output Current 140 mA
DVO
DT
Average Output Voltage Tempco IOe5mA b
0.75 mV/§C
VIN Minimum Value of Input Voltage 7.9 V
(Min) Required to Maintain Line Regulation
3
LM78LXXAC Electrical Characteristics
Limits in standard typeface are for TJe25§C, bold typeface applies over the 0§Ctoa
125§C temperature range. Limits are
guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless
otherwise specified: IOe40 mA, CIe0.33 mF, COe0.1 mF. (Continued)
LM78L82AC Unless otherwise specified, VIN e14V
Symbol Parameter Conditions Min Typ Max Units
VOOutput Voltage 7.87 8.2 8.53
V
11V sVIN s23V
1mAsI
Os40 mA 7.8 8.6
(Note 3)
1mAsI
Os70 mA 7.8 8.6
(Note 3)
DVOLine Regulation 11V sVIN s23V 80 175
mV
12V sVIN s23V 70 125
DVOLoad Regulation 1 mA sIOs100 mA 15 80
1mAsI
Os40 mA 8 40
IQQuiescent Current 2 5.5
mA
DIQQuiescent Current Change 12V sVIN s23V 1.5
1mAsI
Os40 mA 0.1
VnOutput Noise Voltage f e10 Hz to 100 kHz 60 mV
(Note 4)
DVIN
DVOUT
Ripple Rejection f e120 Hz 39 45 dB
12V sVIN s22V
IPK Peak Output Current 140 mA
DVO
DT
Average Output Voltage Tempco IOe5mA b
0.8 mV/§C
VIN Minimum Value of Input Voltage 9.9 V
(Min) Required to Maintain Line Regulation
4
LM78LXXAC Electrical Characteristics
Limits in standard typeface are for TJe25§C, bold typeface applies over the 0§Ctoa
125§C temperature range. Limits are
guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless
otherwise specified: IOe40 mA, CIe0.33 mF, COe0.1 mF. (Continued)
LM78L09AC Unless otherwise specified, VIN e15V
Symbol Parameter Conditions Min Typ Max Units
VOOutput Voltage 8.64 9.0 9.36
V
11.5V sVIN s24V
1mAsI
Os40 mA 8.55 9.45
(Note 3)
1mAsI
Os70 mA 8.55 9.45
(Note 3)
DVOLine Regulation 11.5V sVIN s24V 100 200
mV
13V sVIN s24V 90 150
DVOLoad Regulation 1 mA sIOs100 mA 20 90
1mAsI
Os40 mA 10 45
IQQuiescent Current 2 5.5
mA
DIQQuiescent Current Change 11.5V sVIN s24V 1.5
1mAsI
Os40 mA 0.1
VnOutput Noise Voltage 70 mV
DVIN
DVOUT
Ripple Rejection f e120 Hz 38 44 dB
15V sVIN s25V
IPK Peak Output Current 140 mA
DVO
DT
Average Output Voltage Tempco IOe5mA b
0.9 mV/§C
VIN Minimum Value of Input Voltage 10.7 V
(Min) Required to Maintain Line Regulation
5
LM78LXXAC Electrical Characteristics
Limits in standard typeface are for TJe25§C, bold typeface applies over the 0§Ctoa
125§C temperature range. Limits are
guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless
otherwise specified: IOe40 mA, CIe0.33 mF, COe0.1 mF. (Continued)
LM78L12AC Unless otherwise specified, VIN e19V
Symbol Parameter Conditions Min Typ Max Units
VOOutput Voltage 11.5 12 12.5
V
14.5V sVIN s27V
1mAsI
Os40 mA 11.4 12.6
(Note 3)
1mAsI
Os70 mA 11.4 12.6
(Note 3)
DVOLine Regulation 14.5V sVIN s27V 30 180
mV
16V sVIN s27V 20 110
DVOLoad Regulation 1 mA sIOs100 mA 30 100
1mAsI
Os40 mA 10 50
IQQuiescent Current 3 5
mA
DIQQuiescent Current Change 16V sVIN s27V 1
1mAsI
Os40 mA 0.1
VnOutput Noise Voltage 80 mV
DVIN
DVOUT
Ripple Rejection f e120 Hz 40 54 dB
15V sVIN s25V
IPK Peak Output Current 140 mA
DVO
DT
Average Output Voltage Tempco IOe5mA b
1.0 mV/§C
VIN Minimum Value of Input Voltage 13.7 14.5 V
(Min) Required to Maintain Line Regulation
6
LM78LXXAC Electrical Characteristics
Limits in standard typeface are for TJe25§C, bold typeface applies over the 0§Ctoa
125§C temperature range. Limits are
guaranteed by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless
otherwise specified: IOe40 mA, CIe0.33 mF, COe0.1 mF. (Continued)
LM78L15AC Unless otherwise specified, VIN e23V
Symbol Parameter Conditions Min Typ Max Units
VOOutput Voltage 14.4 15.0 15.6
V
17.5V sVIN s30V
1mAsI
Os40 mA 14.25 15.75
(Note 3)
1mAsI
Os70 mA 14.25 15.75
(Note 3)
DVOLine Regulation 17.5V sVIN s30V 37 250
mV
20V sVIN s30V 25 140
DVOLoad Regulation 1 mA sIOs100 mA 35 150
1mAsI
Os40 mA 12 75
IQQuiescent Current 3 5
mA
DIQQuiescent Current Change 20V sVIN s30V 1
1mAsI
Os40 mA 0.1
VnOutput Noise Voltage 90 mV
DVIN
DVOUT
Ripple Rejection f e120 Hz 37 51 dB
18.5V sVIN s28.5V
IPK Peak Output Current 140 mA
DVO
DT
Average Output Voltage Tempco IOe5mA b
1.3 mV/§C
VIN Minimum Value of Input Voltage 16.7 17.5 V
(Min) Required to Maintain Line Regulation
Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Electrical specifications do not apply when operating the device
outside of its stated operating conditions.
Note 2: Human body model, 1.5 kXin series with 100 pF.
Note 3: Power dissipation s0.75W.
Note 4: Recommended minimum load capacitance of 0.01 mF to limit high frequency noise.
Note 5: Typical thermal resistance values for the packages are:
HPackage: Rth(J-C) e26 §C/W, Rth(J-A) e120 §C/W
ZPackage: Rth(J-C) e60 §C/W, Rth(J-A) e230 §C/W
MPackage: Rth(J-A) e180 §C/W
7
Typical Performance Characteristics
Dissipation (Z Package)
Maximum Average Power
Dissipation (H Package)
Maximum Average Power
Peak Output Current
TL/H/77444
Dropout Voltage Ripple Rejection Output Impedance
TL/H/77445
Quiescent Current Quiescent Current
TL/H/77446
8
Equivalent Circuit
LM78LXX
TL/H/77447
Typical Applications
Fixed Output Regulator
TL/H/77448
*Required if the regulator is located more than 3×from the power supply
filter.
**See Note 4 in the electrical characteristics table.
Adjustable Output Regulator
TL/H/77449
VOUT e5V a(5V/R1 aIQ)R2
5V/R1 l3I
Q
, load regulation (Lr)&[(R1 aR2)/R1](Lrof LM78L05)
9
Typical Applications (Continued)
Current Regulator
TL/H/774410
IOUT e(VOUT/R1) aIQ
lIQe1.5 mA over line and load changes
5V, 500 mA Regulator with Short Circuit Protection
*Solid tantalum.
TL/H/774411
**Heat sink Q1.
***Optional: Improves ripple rejection and transient response.
Load Regulation: 0.6% 0 sILs250 mA pulsed with tON e50 ms.
g15V, 100 mA Dual Power Supply
TL/H/774412
*Solid tantalum.
Variable Output Regulator 0.5V-18V
TL/H/774413
*Solid tantalum.
VOUT eVGa5V, R1 e(bVIN/IQ LM78L05)
VOUT e5V (R2/R4) for (R2 aR3) e(R4 aR5)
A 0.5V output will correspond to (R2/R4) e0.1 (R3/R4) e0.9
10
Physical Dimensions inches (millimeters)
Metal Can Package (H)
Order Number LM78L05ACH, LM78L12ACH or LM78L15ACH
NS Package Number H03A
S.O. Package (M)
Order Number LM78L05ACM, LM78L12ACM or LM78L15ACM
NS Package Number M08A
11
LM78LXX Series 3-Terminal Positive Regulators
Physical Dimensions inches (millimeters) (Continued)
Molded Offset TO-92 (Z)
Order Number LM78L05ACZ, LM78L09ACZ, LM78L62ACZ,
LM78L82ACZ, LM78L12ACZ or LM78L15ACZ
NS Package Number Z03A
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SEMICONDUCTOR CORPORATION. As used herein:
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systems which, (a) are intended for surgical implant support device or system whose failure to perform can
into the body, or (b) support or sustain life, and whose be reasonably expected to cause the failure of the life
failure to perform, when properly used in accordance support device or system, or to affect its safety or
with instructions for use provided in the labeling, can effectiveness.
be reasonably expected to result in a significant injury
to the user.
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