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 zener
diode/resistor combination replacement, the LM78LXX usu-
ally results in an effective output impedance improvement of
two orders of magnitude, and lower quiescent current. These
regulators can provide local on card regulation, eliminating
the distribution problems associated with single point regu-
lation. 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 plastic TO-92 (Z) package,
the plastic SO-8 (M) package and a chip sized package
(8-Bump micro SMD) using National’s micro SMD package
technology. With adequate heat sinking the regulator can
deliver 100 mA output current. Current limiting is included 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
nLM78L05 in micro SMD package
nOutput voltage tolerances of ±5% over the temperature
range
nOutput current of 100 mA
nInternal thermal overload protection
nOutput transistor safe area protection
nInternal short circuit current limit
nAvailable in plastic TO-92 and plastic SO-8 low profile
packages
nNo external components
nOutput voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V, 15V
nSee AN-1112 for micro SMD considerations
Connection Diagrams
SO-8 Plastic (M)
(Narrow Body)
DS007744-2
Top View
8-Bump micro SMD
DS007744-24
Top View
(Bump Side Down)
(TO-92)
Plastic Package (Z)
DS007744-3
Bottom View
micro SMD Marking Orientation
DS007744-33
Top View
March 2002
LM78LXX Series 3-Terminal Positive Regulators
© 2002 National Semiconductor Corporation DS007744 www.national.com
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 −65˚C to +150˚C
Operating Junction Temperature
SO-8 0˚C to 125˚C
micro SMD −40˚C to 85˚C
Soldering Information
Infrared or Convection (20 sec.) 235˚C
Wave Soldering (10 sec.) 260˚C (lead time)
ESD Susceptibility (Note 2) 1kV
LM78LXX Electrical Characteristics Limits in standard typeface are for T
J
= 25˚C, Bold typeface ap-
plies over 0˚C to 125˚C for SO-8 package and −40˚C to 85˚C for micro SMD package. Limits are guaranteed by produc-
tion testing or correlation techniques using standard Statistical Quality Control (SQC) methods. Unless otherwise specified: I
O
= 40 mA, C
I
= 0.33 µF, C
O
= 0.1 µF.
LM78L05
Unless otherwise specified, V
IN
= 10V
Symbol Parameter Conditions Min Typ Max Units
V
O
Output Voltage 4.8 5 5.2
V
7V ≤V
IN
≤20V
1mA≤I
O
≤40 mA
(Note 3) 4.75 5.25
1mA≤I
O
≤70 mA
(Note 3) 4.75 5.25
∆V
O
Line Regulation 7V ≤V
IN
≤20V 18 75
mV
8V ≤V
IN
≤20V 10 54
∆V
O
Load Regulation 1 mA ≤I
O
≤100 mA 20 60
1mA≤I
O
≤40 mA 5 30
I
Q
Quiescent Current 3 5 mA∆I
Q
Quiescent Current Change 8V ≤V
IN
≤20V 1.0
1mA≤I
O
≤40 mA 0.1
V
n
Output Noise Voltage f = 10 Hz to 100 kHz
(Note 4) 40 µV
Ripple Rejection f = 120 Hz
8V ≤V
IN
≤16V 47 62 dB
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
O
=5mA −0.65 mV/˚C
V
IN
(Min) Minimum Value of Input Voltage
Required to Maintain Line Regulation 6.7 7 V
θ
JA
Thermal Resistance
(8-Bump micro SMD) 230.9 ˚C/W
LM78L62AC
Unless otherwise specified, V
IN
= 12V
Symbol Parameter Conditions Min Typ Max Units
V
O
Output Voltage 5.95 6.2 6.45
V
8.5V ≤V
IN
≤20V
1mA≤I
O
≤40 mA
(Note 3) 5.9 6.5
1mA≤I
O
≤70 mA
(Note 3) 5.9 6.5
∆V
O
Line Regulation 8.5V ≤V
IN
≤20V 65 175
mV
9V ≤V
IN
≤20V 55 125
∆V
O
Load Regulation 1 mA ≤I
O
≤100 mA 13 80
1mA≤I
O
≤40 mA 6 40
LM78LXX Series
www.national.com 2
LM78L62AC (Continued)
Unless otherwise specified, V
IN
= 12V
Symbol Parameter Conditions Min Typ Max Units
I
Q
Quiescent Current 2 5.5 mA∆I
Q
Quiescent Current Change 8V ≤V
IN
≤20V 1.5
1mA≤I
O
≤40 mA 0.1
V
n
Output Noise Voltage f = 10 Hz to 100 kHz
(Note 4) 50 µV
Ripple Rejection f = 120 Hz
10V ≤V
IN
≤20V 40 46 dB
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
O
=5mA −0.75 mV/˚C
V
IN
(Min) Minimum Value of Input Voltage
Required to Maintain Line Regulation 7.9 V
LM78L82AC
Unless otherwise specified, V
IN
= 14V
Symbol Parameter Conditions Min Typ Max Units
V
O
Output Voltage 7.87 8.2 8.53
V
11V ≤V
IN
≤23V
1mA≤I
O
≤40 mA
(Note 3) 7.8 8.6
1mA≤I
O
≤70 mA
(Note 3) 7.8 8.6
∆V
O
Line Regulation 11V ≤V
IN
≤23V 80 175
mV
12V ≤V
IN
≤23V 70 125
∆V
O
Load Regulation 1 mA ≤I
O
≤100 mA 15 80
1mA≤I
O
≤40 mA 8 40
I
Q
Quiescent Current 2 5.5 mA∆I
Q
Quiescent Current Change 12V ≤V
IN
≤23V 1.5
1mA≤I
O
≤40 mA 0.1
V
n
Output Noise Voltage f = 10 Hz to 100 kHz
(Note 4) 60 µV
Ripple Rejection f = 120 Hz
12V ≤V
IN
≤22V 39 45 dB
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
O
=5mA −0.8 mV/˚C
V
IN
(Min) Minimum Value of Input Voltage
Required to Maintain Line Regulation 9.9 V
LM78L09AC
Unless otherwise specified, V
IN
= 15V
Symbol Parameter Conditions Min Typ Max Units
V
O
Output Voltage 8.64 9.0 9.36
V
11.5V ≤V
IN
≤24V
1mA≤I
O
≤40 mA
(Note 3) 8.55 9.45
1mA≤I
O
≤70 mA
(Note 3) 8.55 9.45
LM78LXX Series
www.national.com3
LM78L09AC (Continued)
Unless otherwise specified, V
IN
= 15V
Symbol Parameter Conditions Min Typ Max Units
∆V
O
Line Regulation 11.5V ≤V
IN
≤24V 100 200
mV
13V ≤V
IN
≤24V 90 150
∆V
O
Load Regulation 1 mA ≤I
O
≤100 mA 20 90
1mA≤I
O
≤40 mA 10 45
I
Q
Quiescent Current 2 5.5 mA∆I
Q
Quiescent Current Change 11.5V ≤V
IN
≤24V 1.5
1mA≤I
O
≤40 mA 0.1
V
n
Output Noise Voltage 70 µV
Ripple Rejection f = 120 Hz
15V ≤V
IN
≤25V 38 44 dB
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
O
=5mA −0.9 mV/˚C
V
IN
(Min) Minimum Value of Input Voltage
Required to Maintain Line Regulation 10.7 V
LM78L12AC
Unless otherwise specified, V
IN
= 19V
Symbol Parameter Conditions Min Typ Max Units
V
O
Output Voltage 11.5 12 12.5
V
14.5V ≤V
IN
≤27V
1mA≤I
O
≤40 mA
(Note 3) 11.4 12.6
1mA≤I
O
≤70 mA
(Note 3) 11.4 12.6
∆V
O
Line Regulation 14.5V ≤V
IN
≤27V 30 180
mV
16V ≤V
IN
≤27V 20 110
∆V
O
Load Regulation 1 mA ≤I
O
≤100 mA 30 100
1mA≤I
O
≤40 mA 10 50
I
Q
Quiescent Current 3 5 mA∆I
Q
Quiescent Current Change 16V ≤V
IN
≤27V 1
1mA≤I
O
≤40 mA 0.1
V
n
Output Noise Voltage 80 µV
Ripple Rejection f = 120 Hz
15V ≤V
IN
≤25 40 54 dB
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
O
=5mA −1.0 mV/˚C
V
IN
(Min) Minimum Value of Input Voltage
Required to Maintain Line Regulation 13.7 14.5 V
LM78LXX Series
www.national.com 4
LM78L15AC
Unless otherwise specified, V
IN
= 23V
Symbol Parameter Conditions Min Typ Max Units
V
O
Output Voltage 14.4 15.0 15.6
V
17.5V ≤V
IN
≤30V
1mA≤I
O
≤40 mA
(Note 3) 14.25 15.75
1mA≤I
O
≤70 mA
(Note 3) 14.25 15.75
∆V
O
Line Regulation 17.5V ≤V
IN
≤30V 37 250
mV
20V ≤V
IN
≤30V 25 140
∆V
O
Load Regulation 1 mA ≤I
O
≤100 mA 35 150
1mA≤I
O
≤40 mA 12 75
I
Q
Quiescent Current 3 5 mA∆I
Q
Quiescent Current Change 20V ≤V
IN
≤30V 1
1mA≤I
O
≤40 mA 0.1
V
n
Output Noise Voltage 90 µV
Ripple Rejection f = 120 Hz
18.5V ≤V
IN
≤28.5V 37 51 dB
I
PK
Peak Output Current 140 mA
Average Output Voltage Tempco I
O
=5mA −1.3 mV/˚C
V
IN
(Min) Minimum Value of Input Voltage
Required to Maintain Line Regulation 16.7 17.5 V
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 kΩin series with 100 pF.
Note 3: Power dissipation ≤0.75W.
Note 4: Recommended minimum load capacitance of 0.01 µF to limit high frequency noise.
Note 5: Typical thermal resistance values for the packages are:
ZPackage: θJC = 60 ˚C/W, = θJA = 230 ˚C/W
MPackage: θJA = 180 ˚C/W
micro SMD Package: θJA = 230.9˚C/W
LM78LXX Series
www.national.com5
Typical Performance Characteristics
Maximum Average Power
Dissipation (Z Package)
DS007744-14
Peak Output Current
DS007744-16
Dropout Voltage
DS007744-17
Ripple Rejection
DS007744-18
Output Impedance
DS007744-19
Quiescent Current
DS007744-20
Quiescent Current
DS007744-21
LM78LXX Series
www.national.com 6
Equivalent Circuit
Typical Applications
LM78LXX
DS007744-7
Fixed Output Regulator
DS007744-8
*Required if the regulator is located more than 3" from the power supply filter.
**See (Note 4) in the electrical characteristics table.
LM78LXX Series
www.national.com7
Typical Applications (Continued)
Adjustable Output Regulator
DS007744-9
VOUT = 5V + (5V/R1 + IQ)R2
5V/R1 >3I
Q
, load regulation (Lr)≈[(R1 + R2)/R1] (Lrof LM78L05)
Current Regulator
DS007744-10
IOUT =(V
OUT/R1) + IQ
>IQ= 1.5 mA over line and load changes
5V, 500 mA Regulator with Short Circuit Protection
DS007744-11
*Solid tantalum.
**Heat sink Q1.
***Optional: Improves ripple rejection and transient response.
Load Regulation: 0.6% 0 ≤IL≤250 mA pulsed with tON = 50 ms.
±15V, 100 mA Dual Power Supply
DS007744-12
*Solid tantalum.
LM78LXX Series
www.national.com 8
Typical Applications (Continued)
Variable Output Regulator 0.5V-18V
DS007744-13
*Solid tantalum.
VOUT =V
G+ 5V, R1 = (−VIN/IQ LM78L05)
VOUT = 5V (R2/R4) for (R2 + R3) = (R4 + R5)
A 0.5V output will correspond to (R2/R4) = 0.1 (R3/R4) = 0.9
LM78LXX Series
www.national.com9
Physical Dimensions inches (millimeters) unless otherwise noted
NOTES: UNLESS OTHERWISE SPECIFIED
1. EPOXY COATING
2. 63Sn/37Pb EUTECTIC BUMP
3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.
4. PIN A1 IS ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION. REMAINING PINS ARE
NUMBERED COUNTERCLOCKWISE.
5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X
1
IS PACKAGE WIDTH, X
2
IS
PACKAGE LENGTH AND X
3
IS PACKAGE HEIGHT.
6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC.
8-Bump micro SMD
Order Number LM78L05IBP or LM78L05IBPX
NS Package Number BPA08AAB
X
1
= 1.285 X
2
= 1.285 X
3
= 0.850
LM78LXX Series
www.national.com 10
Physical Dimensions inches (millimeters) unless otherwise noted (Continued)
S.O. Package (M)
Order Number LM78L05ACM, LM78L12ACM or LM78L15ACM
NS Package Number M08A
Molded Offset TO-92 (Z)
Order Number LM78L05ACZ, LM78L09ACZ, LM78L12ACZ,
LM78L15ACZ, LM78L62ACZ or LM78L82ACZ
NS Package Number Z03A
LM78LXX Series
www.national.com11
Notes
LIFE SUPPORT POLICY
NATIONAL’S PRODUCTS ARE NOT AUTHORIZED FOR USE AS CRITICAL COMPONENTS IN LIFE SUPPORT
DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:
1. Life support devices or systems are devices or
systems which, (a) are intended for surgical implant
into the body, or (b) support or sustain life, and
whose failure to perform when properly used in
accordance with instructions for use provided in the
labeling, can be reasonably expected to result in a
significant injury to the user.
2. A critical component is any component of a life
support device or system whose failure to perform
can be reasonably expected to cause the failure of
the life support device or system, or to affect its
safety or effectiveness.
National Semiconductor
Corporation
Americas
Email: support@nsc.com
National Semiconductor
Europe Fax: +49 (0) 180-530 85 86
Email: europe.support@nsc.com
Deutsch Tel: +49 (0) 69 9508 6208
English Tel: +44 (0) 870 24 0 2171
Français Tel: +33 (0) 1 41 91 8790
National Semiconductor
Asia Pacific Customer
Response Group
Tel: 65-2544466
Fax: 65-2504466
Email: ap.support@nsc.com
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Japan Ltd.
Tel: 81-3-5639-7560
Fax: 81-3-5639-7507
www.national.com
LM78LXX Series 3-Terminal Positive Regulators
National does not assume any responsibility for use of any circuitry described, no circuit patent licenses are implied and National reserves the right at any time without notice to change said circuitry and specifications.
National P/N LM78L05 - 3-Terminal Positive Regulators
See A/D Converters
Products
Products > Analog - Regulators > Linear Regulators - Standard/NPN > Positive Voltage - Fixed > LM78L05
LM78L05 Product Folder
3-Terminal Positive Regulators
See Also: LM3480 - better line/load/dropout voltage
Generic P/N 78L05
General
Description Features Datasheet Package
& Models Samples
& Pricing Design
Tools Application
Notes
Parametric Table Parametric Table
Multiple Output Capability No
On/Off Pin No
Error Flag -
Input Voltage, min (Volt) 6.70
Input Voltage, max (Volt) 35
Output Current, max 100 mA
Watchdog -
Output Voltage (Volt) 5
Datasheet
Title Size in Kbytes Date View Online Download Receive via Email
LM78LXX Series 3-Terminal
Positive Regulators 198 Kbytes 5-Mar-02 View Online Download Receive via Email
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Electronic
Orders
Budgetary
Pricing Std
Pack
Size
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Marking
Type Pins MSL SPICE IBIS Qty $US each
LM78L05IBP microSMD 8MSL Full
production N/A N/A
Samples
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of
250
¢1¢IP
$I 1
LM78L05IBPX microSMD 8MSL Full
production N/A N/A 1K+ $0.1500 reel
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LM78L05ACM SOIC
NARROW 8MSL Full
production N/A N/A
24 Hour
Samples
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of
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[logo]¢2¢T
LM78L
05ACM
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National P/N LM78L05 - 3-Terminal Positive Regulators
LM78L05ACMX SOIC
NARROW 8MSL Full
production N/A N/A
Buy Now
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2500
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LM78L
05ACM
LM78L05ACZ TO 92 3MSL Full
production N/A N/A
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LM78L
05ACZ
LM78L05 MDC Die Full
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Samples
tray
of
N/A -
LM78L05 MWC Wafer Full
production N/A N/A
wafer
jar
of
N/A
-
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 zener diode/resistor combination
replacement, the LM78LXX usually results in an effective output impedance improvement of two orders of
magnitude, and lower quiescent current. 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 plastic TO-92 (Z) package, the plastic SO-8 (M) package and a chip sized
package (8-Bump micro SMD) using National's micro SMD package technology. With adequate heat sinking
the regulator can deliver 100 mA output current. Current limiting is included to limit the peak output current
to a safe value. Safe area protection for the output transistors is provided to limit internal 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
● LM78L05 in micro SMD package
● Output voltage tolerances of ±5% over the temperature range
● Output current of 100 mA
● Internal thermal overload protection
● Output transistor safe area protection
● Internal short circuit current limit
● Available in plastic TO-92 and plastic SO-8 low profile packages
● No external components
● Output voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V, 15V
● See AN-1112 for micro SMD considerations
Design Tools
Title Size in Kbytes Date View Online Download Receive via Email
LM78L05IBP Micro SMD
Qualification Package 4172 Kbytes 17-Apr-2000 View Online Download Receive via Email
If you have trouble printing or viewing PDF file(s), see Printing Problems.
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National P/N LM78L05 - 3-Terminal Positive Regulators
Application Notes
Title Size in
Kbytes Date View Online Download Receive via
Email
AN-1081: Application Note 1081 A Low Cost, Low Parts-
Count DC/DC Converter With Multiple Outputs 45
Kbytes
2-
Mar-
99 View Online Download Receive via
Email
AN-1112: Application Note 1112 Micro SMD Wafer Level
Chip Scale Package 620
Kbytes
27-
Mar-
02 View Online Download Receive via
Email
Application Note 1112 Micro SMD Wafer Level Chip Scale
Package (JAPANESE)171
Kbytes
View Online
Download
Receive via
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If you have trouble printing or viewing PDF file(s), see Printing Problems.
[Information as of 5-Aug-2002]
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National P/N LM78L15 - 3-Terminal Positive Regulators
See A/D Converters
Products
Products > Analog - Regulators > Linear Regulators - Standard/NPN > Positive Voltage - Fixed > LM78L15
LM78L15 Product Folder
3-Terminal Positive Regulators
See Also: LM3480 - better line/load/dropout voltage
Generic P/N 78L15
General
Description Features Datasheet Package
& Models Samples
& Pricing
Parametric Table Parametric Table
Multiple Output Capability No
On/Off Pin No
Error Flag -
Input Voltage, min (Volt) 16.70
Input Voltage, max (Volt) 35
Output Current, max 100 mA
Watchdog -
Output Voltage (Volt) 15
Datasheet
Title Size in Kbytes Date View Online Download Receive via Email
LM78LXX Series 3-Terminal
Positive Regulators 198 Kbytes 5-Mar-02 View Online Download Receive via Email
If you have trouble printing or viewing PDF file(s), see Printing Problems.
Package Availability, Models, Samples & Pricing
Part Number Package Status Models Samples &
Electronic
Orders
Budgetary
Pricing Std
Pack
Size
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Marking
Type Pins MSL SPICE IBIS Qty $US each
LM78L15ACM SOIC
NARROW 8MSL Full
production N/A N/A
Buy Now
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of
95
[logo]¢2¢T
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15ACM
LM78L15ACMX SOIC
NARROW 8MSL Full
production N/A N/A
Buy Now
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of
2500
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LM78L
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LM78L15ACZ TO 92 3MSL Full
production N/A N/A
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15ACZ
LM78L15AC MDC Die Full
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National P/N LM78L15 - 3-Terminal Positive Regulators
LM78L15AC MWC Wafer Full
production N/A N/A
wafer
jar
of
N/A
-
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 zener diode/resistor combination
replacement, the LM78LXX usually results in an effective output impedance improvement of two orders of
magnitude, and lower quiescent current. 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 plastic TO-92 (Z) package, the plastic SO-8 (M) package and a chip sized
package (8-Bump micro SMD) using National's micro SMD package technology. With adequate heat sinking
the regulator can deliver 100 mA output current. Current limiting is included to limit the peak output current
to a safe value. Safe area protection for the output transistors is provided to limit internal 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
● LM78L05 in micro SMD package
● Output voltage tolerances of ±5% over the temperature range
● Output current of 100 mA
● Internal thermal overload protection
● Output transistor safe area protection
● Internal short circuit current limit
● Available in plastic TO-92 and plastic SO-8 low profile packages
● No external components
● Output voltages of 5.0V, 6.2V, 8.2V, 9.0V, 12V, 15V
● See AN-1112 for micro SMD considerations
[Information as of 5-Aug-2002]
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