Not to scale
TO-92
3-Pin
DSBGA
8-Pin
SOIC
8-Pin
1
1
1
2
3
Product
Folder
Order
Now
Technical
Documents
Tools &
Software
Support &
Community
Reference
Design
An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,
intellectual property matters and other important disclaimers. PRODUCTION DATA.
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
LM78L 100-mA Fixed Output Linear Regulator
1
1 Features
1• For lower cost alternative, see the UA78L
• Input voltage up to 30 V
• Output voltage tolerances of ±5% over the
temperature range
• Available output voltages: 5 V, 6.2 V, 8.2 V, 9 V,
12 V, and 15 V
• Output current of 100 mA
• Output transistor safe area protection
• Internal thermal overload protection
• Internal short-circuit current limit
• No external components
• Available in tiny DSBGA package
• Available in 3-pin TO-92 and 8-pin SOIC low
profile packages
2 Applications
•Battery chargers
•Portable instrumentation
•LED lighting
•Appliances
Package Options
3 Description
The LM78L series (LM78Lxx throughout this
document) of three terminal positive regulators is
available with several fixed output voltages, making
them useful in a wide range of applications. Used as
a Zener-diode and resistor combination replacement,
the LM78Lxx usually provides an effective output
impedance improvement of two orders of magnitude
and lower quiescent current. These regulators can
provide local, on-card regulation, eliminating
distribution problems associated with single-point
regulation. The available voltages 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 (LP)
package, the SOIC (D) package, and a chip-sized
package (8-Bump DSBGA) using TI's DSBGA
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 is too high for
the heat sinking provided, the thermal shutdown
circuit prevents the IC from overheating.
See the AN-1112 DSBGA Wafer Level Chip Scale
Package application note for DSBGA considerations.
For more information on the TO-92 package, see the
TO-92 Packing Options/Ordering Instructions
application report.
Device Information(1)
PART NUMBER PACKAGE BODY SIZE (NOM)
LM78L DSBGA (8) 1.30 mm × 1.30 mm
SOIC (8) 3.90 mm × 4.90 mm
TO-92 (3) 3.70 mm × 4.70 mm
(1) For all available packages, see the orderable addendum at
the end of the data sheet.
Fixed Output Regulator Circuit
2
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
www.ti.com
Product Folder Links: LM78L
Submit Documentation Feedback Copyright © 2000–2020, Texas Instruments Incorporated
Table of Contents
1 Features.................................................................. 1
2 Applications ........................................................... 1
3 Description............................................................. 1
4 Revision History..................................................... 2
5 Device Comparison Table..................................... 3
6 Pin Configuration and Functions......................... 4
7 Specifications......................................................... 5
7.1 Absolute Maximum Ratings ...................................... 5
7.2 ESD Ratings.............................................................. 5
7.3 Recommended Operating Conditions....................... 5
7.4 Thermal Information.................................................. 5
7.5 Electrical Characteristics — LM78L05...................... 6
7.6 Electrical Characteristics — LM78L09...................... 6
7.7 Electrical Characteristics — LM78L12...................... 7
7.8 Electrical Characteristics — LM78L15...................... 7
7.9 Electrical Characteristics — LM78L62...................... 8
7.10 Typical Characteristics............................................ 9
8 Detailed Description............................................ 11
8.1 Overview................................................................. 11
8.2 Functional Block Diagram....................................... 11
8.3 Feature Description................................................. 12
8.4 Device Functional Modes........................................ 12
9 Application and Implementation ........................ 13
9.1 Application Information............................................ 13
9.2 Typical Applications ................................................ 13
10 Power Supply Recommendations ..................... 16
11 Layout................................................................... 16
11.1 Layout Guidelines ................................................. 16
11.2 Layout Example .................................................... 17
12 Device and Documentation Support................. 18
12.1 Documentation Support ........................................ 18
12.2 Receiving Notification of Documentation Updates 18
12.3 Support Resources ............................................... 18
12.4 Trademarks........................................................... 18
12.5 Electrostatic Discharge Caution............................ 18
12.6 Glossary................................................................ 18
13 Mechanical, Packaging, and Orderable
Information........................................................... 18
4 Revision History
NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
Changes from Revision K (December 2016) to Revision L Page
• Changed product name to LM78L so document matches product folder .............................................................................. 1
• Added first Features bullet ..................................................................................................................................................... 1
• Added Device Comparison Table........................................................................................................................................... 3
Changes from Revision J (December 2013) to Revision K Page
• Added Applications section, Device Information table, Pin Configuration and Functions section, ESD Ratings table,
Recommended Operating Conditions table, Detailed Description section, Application and Implementation section,
Power Supply Recommendations section, Layout section, Device and Documentation Support section, and
Mechanical, Packaging, and Orderable Information section.................................................................................................. 1
• Deleted LM78L82 from the data sheet................................................................................................................................... 1
• Added Thermal Information table........................................................................................................................................... 1
• Deleted Lead temperature (soldering) information................................................................................................................. 5
• Changed RθJA values for D (SOIC) From: 180 To: 128.8, LP (TO-92) from 230 to 158.7, and YPB (DSBGA) From:
230.9 To 108.4 ....................................................................................................................................................................... 5
• Changed RθJC values for LP (TO-92) From: 60 To 75.2......................................................................................................... 5
Changes from Revision I (April 2013) to Revision J Page
• Added the AI suffix ................................................................................................................................................................. 6
3
LM78L
www.ti.com
SNVS754L –JANUARY 2000–REVISED JUNE 2020
Product Folder Links: LM78L
Submit Documentation FeedbackCopyright © 2000–2020, Texas Instruments Incorporated
5 Device Comparison Table
IOUT PARAMETER LM78xx UA78 LM340 LM340A UNIT
1.5 A
Input voltage range 7 - 35 7 - 38 7 - 35 7 - 35 V
Fixed output voltage option 5, 12, 15 5, 8, 10, 12, 15,
24 5, 12, 15 5, 12, 15 V
Load regulation accuracy 4 4 4 2 %
PSRR (120 Hz) 80 78 80 80 dB
Recommended operating temperature 0 - 125 0 - 125 0 - 125 0 - 125 °C
TO-220 TJA 23.9 19 23.9 23.9 °C/W
SOT-223 TJA 62.1 N/A 62.1 62.1 °C/W
TO-3 TJA 39 N/A 39 39 °C/W
TO-263 TJA 44.8 25.3 44.8 44.8 °C/W
0.5 A
LM78Mxx UA78MxxC UA78MxxI LM341
Input voltage range 7.2 - 35 5.3 - 30 5.3 - 30 7.2 - 35 V
Fixed output voltage option 5 3.3, 5, 6, 8, 9,
10, 12 3.3, 5 5 V
Load regulation accuracy 4 3 3 4 %
PSRR (120 Hz) 78 80 80 78 dB
Recommended operating temperature –40 - 125 0 - 125 –40 - 125 –40 - 125 °C
TO-220 TJA 22.6 19 19 22.6 °C/W
SOT-223 TJA N/A 53 53 N/A °C/W
TO-3 TJA 162.4 N/A N/A N/A °C/W
TO-252 Powerflex TJA N/A 28 28 N/A °C/W
TO-252 TJA 38 30.3 30.3 N/A °C/W
0.1 A
LM78LxxAC LM78LxxAI,
LM78LxxIT UA78LxxC UA78LxxI
Input voltage range 7.0 - 30 7.0 - 30 4.75 - 30 4.75 - 30 V
Fixed output voltage option 5, 6.2, 12, 15 5, 9 2.6, 5, 6.2, 8, 9,
10, 12, 15 5 V
Load regulation accuracy (A/non -A) 4 4 4, 8 4, 8 %
PSRR (120 Hz) 62 62 51 51 dB
Recommended operating temperature 0 - 125 –40 - 125 0 - 125 –40 - 125 °C
SOT-89 TJA N/A N/A 54.7 54.7 °C/W
SO-8 TJA 128.8 128.8 115 115 °C/W
DSBGA TJA N/A 108.4 N/A N/A °C/W
TO-92 TJA 158.7 N/A 143.6 143.6 °C/W
1 VOUT
2 GND
3 VIN
Not to scale
A B C
3
2
1
Not to scale
VOUT NC GND
VOUT GND
VIN VIN NC
1VOUT 8 VIN
2GND 7 GND
3GND 6 GND
4NC 5 NC
Not to scale
4
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
www.ti.com
Product Folder Links: LM78L
Submit Documentation Feedback Copyright © 2000–2020, Texas Instruments Incorporated
6 Pin Configuration and Functions
YPB Package
8-Pin DSBGA
Top View
D Package
8-Pin SOIC
Top View
LP Package
3-Pin TO-92
Bottom View
Pin Functions
PIN I/O DESCRIPTION
NAME DSBGA SOIC TO-92
GND C2, C3 2, 3, 6, 7 2 — Ground
NC B3, C1 4, 5 — — No connection
VIN A1, B1 8 3 I Input supply voltage pin
VOUT A2, A3 1 1 O Output voltage pin
5
LM78L
www.ti.com
SNVS754L –JANUARY 2000–REVISED JUNE 2020
Product Folder Links: LM78L
Submit Documentation FeedbackCopyright © 2000–2020, Texas Instruments Incorporated
(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings
only, which do not imply functional operation of the device at these or any other conditions beyond those indicated under Recommended
Operating Conditions. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.
(2) If Military/Aerospace specified devices are required, please contact the Texas Instruments Sales Office/Distributors for availability and
specifications.
7 Specifications
7.1 Absolute Maximum Ratings
over operating free-air temperature range (unless otherwise noted)(1)(2)
MIN MAX UNIT
Input voltage 35 V
Power dissipation Internally limited
Operating junction temperature, TJ
LM78LxxACZ (TO-92) 0 125
°C
LM78LxxACM (SOIC) 0 125
LM78LxxAIM (SOIC) –40 125
LM78LxxITP (thin DSBGA) –40 85
Storage temperature, Tstg –65 150 °C
(1) Human body model, 1.5 kΩin series with 100 pF.
7.2 ESD Ratings VALUE UNIT
V(ESD) Electrostatic discharge Human-body model (HBM),(1) ±1000 V
7.3 Recommended Operating Conditions
over operating free-air temperature range (unless otherwise noted) MIN NOM MAX UNIT
Input voltage 30 V
Continuous output current 100 mA
TJJunction temperature
LM78LxxACZ (TO-92) 0 125
°C
LM78LxxACM (SOIC) 0 125
LM78LxxAIM (SOIC) –40 125
LM78LxxITP (DSBGA) –40 85
(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application
report.
7.4 Thermal Information
THERMAL METRIC(1) LM78Lxx
UNITD (SOIC) LP (TO-92) YPB (DSBGA)
8 PINS 3 PINS 8 PINS
RθJA Junction-to-ambient thermal resistance 128.8 158.7 108.4 °C/W
RθJC(top) Junction-to-case (top) thermal resistance 76 75.2 1.3 °C/W
RθJB Junction-to-board thermal resistance 69.3 n/a 31.4 °C/W
ψJT Junction-to-top characterization parameter 26.3 30.2 4.5 °C/W
ψJB Junction-to-board characterization parameter 68.8 138.2 31.4 °C/W
RθJC(bot) Junction-to-case (bottom) thermal resistance — — — °C/W
6
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
www.ti.com
Product Folder Links: LM78L
Submit Documentation Feedback Copyright © 2000–2020, Texas Instruments Incorporated
(1) For the operating ranges of each package, see Absolute Maximum Ratings.
(2) Limits are ensured by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.
(3) Power dissipation ≤0.75 W.
(4) Recommended minimum load capacitance of 0.01 µF to limit high-frequency noise.
7.5 Electrical Characteristics — LM78L05
Typical values apply for TJ= 25°C, Minimum and Maximum limits apply for the entire operating temperature range of the
package(1)(2), IO= 40 mA, CI= 0.33 µF, CO= 0.1 µF, VIN = 10 V (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOOutput voltage TJ= 25°C 4.8 5 5.2 VVIN = 7 V to 20 V, IO= 1 mA to 40 mA(3) 4.75 5.25
IO= 1 mA to 70 mA(3) 4.75 5.25
ΔVO
Line regulation VIN = 7 V to 20 V, TJ= 25°C 18 75
mV
VIN = 8 V to 20 V, TJ= 25°C 10 54
Load regulation IO= 1 mA to 100 mA, TJ= 25°C 20 60
IO= 1 mA to 40 mA, TJ= 25°C 5 30
IQQuiescent current TJ= 25°C 3 5 mA
ΔIQQuiescent current change VIN = 8 V to 20 V 1 mA
IO= 1 mA to 40 mA 0.1
VnOutput noise voltage f = 10 Hz to 100 kHz(4) 40 µV
ΔVIN/ΔVORipple rejection f = 120 Hz, VIN = 8 V to 16 V, TJ= 25°C 47 62 dB
IPK Peak output current 140 mA
ΔVO/ΔTAverage output voltage temperature
coefficient IO= 5 mA –0.65 mV/°C
VIN(MIN) Minimum value of input voltage
required to maintain line regulation TJ= 25°C 6.7 7 V
(1) For the operating ranges of each package, see Absolute Maximum Ratings.
(2) Limits are ensured by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.
(3) Power dissipation ≤0.75 W.
7.6 Electrical Characteristics — LM78L09
Typical values apply for TJ= 25°C, Minimum and Maximum limits apply for the entire operating temperature range of the
package(1)(2), IO= 40 mA, CI= 0.33 µF, CO= 0.1 µF, VIN = 15 V (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOOutput voltage TJ= 25°C 8.64 9 9.36 VVIN = 11.5 V to 24 V, IO= 1 mA to 40 mA(3) 8.55 9.45
IO= 1 mA to 70 mA(3) 8.55 9.45
ΔVO
Line regulation VIN = 11.5 V to 24 V, TJ= 25°C 100 200
mV
VIN = 13 V to 24 V, TJ= 25°C 90 150
Load regulation IO= 1 mA to 100 mA, TJ= 25°C 20 90
IO= 1 mA to 40 mA, TJ= 25°C 10 45
IQQuiescent current TJ= 25°C 2 5.5 mA
ΔIQQuiescent current change VIN = 11.5 V to 24 V 1.5 mA
IO= 1 mA to 40 mA 0.1
VnOutput noise voltage 70 µV
ΔVIN/ΔVORipple rejection f = 120 Hz, VIN = 15 V to 25 V, TJ= 25°C 38 44 dB
IPK Peak output current 140 mA
ΔVO/ΔTAverage output voltage temperature
coefficient IO= 5 mA –0.9 mV/°C
VIN(MIN) Minimum value of input voltage
required to maintain line regulation 10.7 V
7
LM78L
www.ti.com
SNVS754L –JANUARY 2000–REVISED JUNE 2020
Product Folder Links: LM78L
Submit Documentation FeedbackCopyright © 2000–2020, Texas Instruments Incorporated
(1) For the operating ranges of each package, see Absolute Maximum Ratings.
(2) Limits are ensured by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.
(3) Power dissipation ≤0.75 W.
7.7 Electrical Characteristics — LM78L12
Typical values apply for TJ= 25°C, Minimum and Maximum limits apply for the entire operating temperature range of the
package(1)(2), IO= 40 mA, CI= 0.33 µF, CO= 0.1 µF, VIN = 19 V (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOOutput voltage TJ= 25°C 11.5 12 12.5 VVIN = 14.5 V to 27 V, IO= 1 mA to 40 mA(3) 11.4 12.6
IO= 1 mA to 70 mA(3) 11.4 12.6
ΔVO
Line regulation VIN = 14.5 V to 27 V, TJ= 25°C 30 180
mV
VIN = 16 V to 27 V, TJ= 25°C 20 110
Load regulation IO= 1 mA to 100 mA, TJ= 25°C 30 100
IO= 1 mA to 40 mA, TJ= 25°C 10 50
IQQuiescent current TJ= 25°C 3 5 mA
ΔIQQuiescent current change VIN = 16 V to 27 V 1 mA
IO= 1 mA to 40 mA 0.1
VnOutput noise voltage 80 µV
ΔVIN/ΔVORipple rejection f = 120 Hz, VIN = 15 V to 25 V, TJ= 25°C 40 54 dB
IPK Peak output current 140 mA
ΔVO/ΔTAverage output voltage temperature
coefficient IO= 5 mA –1 mV/°C
VIN(MIN) Minimum value of input voltage
required to maintain line regulation TJ= 25°C 13.7 14.5 V
(1) For the operating ranges of each package, see Absolute Maximum Ratings.
(2) Limits are ensured by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.
(3) Power dissipation ≤0.75 W.
7.8 Electrical Characteristics — LM78L15
Typical values apply for TJ= 25°C, Minimum and Maximum limits apply for the entire operating temperature range of the
package(1)(2), IO= 40 mA, CI= 0.33 µF, CO= 0.1 µF, VIN = 23 V (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOOutput voltage TJ= 25°C 14.4 15 15.6 VVIN = 17.5 V to 30 V, IO= 1 mA to 40 mA(3) 14.25 15.75
IO= 1 mA to 70 mA(3) 14.25 15.75
ΔVO
Line regulation VIN = 17.5 V to 30 V, TJ= 25°C 37 250
mV
VIN = 20 V to 30 V, TJ= 25°C 25 140
Load regulation IO= 1 mA to 100 mA, TJ= 25°C 35 150
IO= 1 mA to 40 mA, TJ= 25°C 12 75
IQQuiescent current TJ= 25°C 3 5 mA
ΔIQQuiescent current change VIN =20 V to 30 V 1 mA
IO= 1 mA to 40 mA 0.1
VnOutput noise voltage 90 µV
ΔVIN/ΔVORipple rejection f = 120 Hz, VIN = 18.5 V to 28.5 V, TJ= 25°C 37 51 dB
IPK Peak output current 140 mA
ΔVO/ΔTAverage output voltage temperature
coefficient IO= 5 mA –1.3 mV/°C
VIN(MIN) Minimum value of input voltage
required to maintain line regulation TJ= 25°C 16.7 17.5 V
8
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
www.ti.com
Product Folder Links: LM78L
Submit Documentation Feedback Copyright © 2000–2020, Texas Instruments Incorporated
(1) For the operating ranges of each package, see Absolute Maximum Ratings.
(2) Limits are ensured by production testing or correlation techniques using standard Statistical Quality Control (SQC) methods.
(3) Power dissipation ≤0.75 W.
(4) Recommended minimum load capacitance of 0.01 µF to limit high-frequency noise.
7.9 Electrical Characteristics — LM78L62
Typical values apply for TJ= 25°C, Minimum and Maximum limits apply for the entire operating temperature range of the
package(1)(2), IO= 40 mA, CI= 0.33 µF, CO= 0.1 µF, VIN = 12 V (unless otherwise noted).
PARAMETER TEST CONDITIONS MIN TYP MAX UNIT
VOOutput voltage TJ= 25°C 5.95 6.2 6.45 VVIN = 8.5 V to 20 V, IO= 1 mA to 40 mA(3) 5.9 6.5
IO= 1 mA to 70 mA(3) 5.9 6.5
ΔVO
Line regulation VIN = 8.5 V to 20 V, TJ= 25°C 65 175
mV
VIN = 9 V to 20 V, TJ= 25°C 55 125
Load regulation IO= 1 mA to 100 mA, TJ= 25°C 13 80
IO= 1 mA to 40 mA, TJ= 25°C 6 40
IQQuiescent current TJ= 25°C 2 5.5 mA
ΔIQQuiescent current change VIN = 8 V to 20 V 1.5 mA
IO= 1 mA to 40 mA 0.1
VnOutput noise voltage f = 10 Hz to 100 kHz(4) 50 µV
ΔVIN/ΔVORipple rejection f = 120 Hz, VIN = 10 V to 20 V, TJ= 25°C 40 46 dB
IPK Peak output current 140 mA
ΔVO/ΔTAverage output voltage temperature
coefficient IO= 5 mA –0.75 mV/°C
VIN(MIN) Minimum value of input voltage
required to maintain line regulation 7.9 V
9
LM78L
www.ti.com
SNVS754L –JANUARY 2000–REVISED JUNE 2020
Product Folder Links: LM78L
Submit Documentation FeedbackCopyright © 2000–2020, Texas Instruments Incorporated
7.10 Typical Characteristics
LP Package
Figure 1. Maximum Average Power Dissipation Figure 2. Peak Output Current
Figure 3. Dropout Voltage Figure 4. Ripple Rejection
Figure 5. Output Impedance Figure 6. Quiescent Current
11
LM78L
www.ti.com
SNVS754L –JANUARY 2000–REVISED JUNE 2020
Product Folder Links: LM78L
Submit Documentation FeedbackCopyright © 2000–2020, Texas Instruments Incorporated
8 Detailed Description
8.1 Overview
The LM78Lxx series of positive regulators is available in the following fixed output voltages: 5 V, 6.2 V, 8.2 V,
9 V, 12 V, and 15 V. The regulator can be configured to an adjustable output by connecting the GND pin to the
center of a resistive voltage divider as shown in Figure 10. In this configuration, the fixed output voltage acts as
the reference voltage across R1 allowing the output to be adjusted by changing the resistor.
8.2 Functional Block Diagram
12
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
www.ti.com
Product Folder Links: LM78L
Submit Documentation Feedback Copyright © 2000–2020, Texas Instruments Incorporated
8.3 Feature Description
8.3.1 Load Regulation
These devices regulate the voltage between the VOUT and GND pins, and can be made adjustable by using a
resistive voltage divider. The output voltage tolerance is ±5% over temperature.
8.3.2 Protection
The LM78Lxx series of regulators has internal thermal overload protection that automatically shuts off the device
if the operating temperature becomes too high. There is also internal short-circuit current limit and output
transistor safe area protection that shuts down the device if the output current becomes too high.
8.4 Device Functional Modes
8.4.1 Normal Operation
The VOUT pin sources current necessary to set the voltage on VOUT at a fixed voltage above the GND pin. See
Specifications for VOof each device.
8.4.2 Shutdown
The device automatically shuts down if the output current or its internal temperature becomes too high.
13
LM78L
www.ti.com
SNVS754L –JANUARY 2000–REVISED JUNE 2020
Product Folder Links: LM78L
Submit Documentation FeedbackCopyright © 2000–2020, Texas Instruments Incorporated
9 Application and Implementation
NOTE
Information in the following applications sections is not part of the TI component
specification, and TI does not warrant its accuracy or completeness. TI’s customers are
responsible for determining suitability of components for their purposes. Customers should
validate and test their design implementation to confirm system functionality.
9.1 Application Information
These devices are versatile and high-performance regulators with a wide temperature range and tight line and
load regulation. An input capacitor is required if the regulator is placed more than 3 inches from the power supply
filter. TI recommends a minimum load capacitance of 0.01 µF to limit high frequency.
9.2 Typical Applications
9.2.1 Fixed Output Regulator
*Required if the regulator is located more than 3 inches from the power supply filter.
**Recommended minimum load capacitance of 0.01 µF to limit high-frequency noise.
Figure 8. Fixed Output Regulator Circuit
9.2.1.1 Design Requirements
The device component count is very minimal. No external components are usually required. However, TI
recommends input or output capacitors depending on the distance between the device and the power supply and
if extra filtering is needed at the output.
The output voltage is set based on the selection of the two resistors (R1 and R2), as shown in Figure 14.
9.2.1.2 Detailed Design Procedure
9.2.1.2.1 Input Capacitor
An input capacitor is required if the regulator is placed more than 3 inches from the power supply filter. A 0.33-µF
capacitor on the input is suitable for most applications.
9.2.1.2.2 Output Capacitor
TI recommends a minimum load capacitance of 0.01 µF to limit high-frequency noise.
Load Current (mA)
Input - Output Differential (V)
0 20 40 60 80 100
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
25qC
14
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
www.ti.com
Product Folder Links: LM78L
Submit Documentation Feedback Copyright © 2000–2020, Texas Instruments Incorporated
Typical Applications (continued)
9.2.1.3 Application Curve
Figure 9. LM78Lxx Dropout
9.2.2 Other Application Circuits
Figure 10 to Figure 14 show application circuit examples using the LM78Lxx devices. Customers must fully
validate and test these circuits before implementing a design based on these examples. Unless otherwise noted,
the design procedures in Fixed Output Regulator are applicable to these designs.
VO= 5 V + (5 V / R1 + IQ) × R2*
* The 5 V represents the fixed output voltage of the LM78L05. If using one of the other LM78Lxx devices, use that
fixed output voltage value when calculating VO.
IQ< 5 V / (3 × R1)
Load regulation (LR) of LM78L05 ≈(R1 + R2) / R1
Figure 10. Adjustable Output Regulator Circuit
15
LM78L
www.ti.com
SNVS754L –JANUARY 2000–REVISED JUNE 2020
Product Folder Links: LM78L
Submit Documentation FeedbackCopyright © 2000–2020, Texas Instruments Incorporated
Typical Applications (continued)
IOUT = (VO/ R1) + IQ
IQ= 1.5 mA over line and load changes
Figure 11. Current Regulator Circuit
*Solid tantalum
**Heat sink Q1
***Optional: Improves ripple rejection and transient response.
Load Regulation = 0.6%, IL= 0 mA to 250 mA pulsed with tON = 50 ms.
Figure 12. 5-V, 500-mA Regulator With Short-Circuit Protection Circuit
*Solid tantalum
Figure 13. ±15-V, 100-mA Dual Power Supply Circuit
16
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
www.ti.com
Product Folder Links: LM78L
Submit Documentation Feedback Copyright © 2000–2020, Texas Instruments Incorporated
Typical Applications (continued)
*Solid tantalum
VO= VG+ 5 V, R1 = (–VIN / IQ(LM78L05))
VO= 5 V (R2 / R4) for (R2 + R3) = (R4 + R5)
A 0.5-V output will correspond to (R2 / R4) = 0.1, (R3 / R4) = 0.9
Figure 14. Variable Output Regulator Circuit (0.5 V to 18 V)
10 Power Supply Recommendations
The linear regulator input supply must be well regulated and kept at a voltage level to not exceed the maximum
input to output voltage differential allowed by the device. The minimum dropout voltage (VIN – VO) must be met
with extra headroom when possible to keep the output well regulated. A 0.33-µF or higher capacitor must be
placed at the input to bypass noise.
11 Layout
11.1 Layout Guidelines
For the best overall performance, some layout guidelines may be disregarded. Place all circuit components on
the same side of the circuit board and as near as practical to the respective linear regulator pins. Traces must be
kept short and wide to reduce the amount of parasitic elements in the system. The actual width and thickness of
traces depends on the current carrying capability and heat dissipation required by the end system.
18
LM78L
SNVS754L –JANUARY 2000–REVISED JUNE 2020
www.ti.com
Product Folder Links: LM78L
Submit Documentation Feedback Copyright © 2000–2020, Texas Instruments Incorporated
12 Device and Documentation Support
12.1 Documentation Support
12.1.1 Related Documentation
For related documentation see the following:
• Texas Instruments, UA78L00 Series Positive-Voltage Linear Regulators data sheet
• Texas Instruments, AN-1112 DSBGA Wafer Level Chip Scale Package application note
• Texas Instruments, TO-92 Packing Options/Ordering Instructions application report
12.2 Receiving Notification of Documentation Updates
To receive notification of documentation updates, navigate to the device product folder on ti.com. In the upper
right corner, click on Alert me to register and receive a weekly digest of any product information that has
changed. For change details, review the revision history included in any revised document.
12.3 Support Resources
TI E2E™ support forums are an engineer's go-to source for fast, verified answers and design help — straight
from the experts. Search existing answers or ask your own question to get the quick design help you need.
Linked content is provided "AS IS" by the respective contributors. They do not constitute TI specifications and do
not necessarily reflect TI's views; see TI's Terms of Use.
12.4 Trademarks
E2E is a trademark of Texas Instruments.
All other trademarks are the property of their respective owners.
12.5 Electrostatic Discharge Caution
This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with
appropriate precautions. Failure to observe proper handling and installation procedures can cause damage.
ESD damage can range from subtle performance degradation to complete device failure. Precision integrated circuits may be more
susceptible to damage because very small parametric changes could cause the device not to meet its published specifications.
12.6 Glossary
SLYZ022 —TI Glossary.
This glossary lists and explains terms, acronyms, and definitions.
13 Mechanical, Packaging, and Orderable Information
The following pages include mechanical, packaging, and orderable information. This information is the most
current data available for the designated devices. This data is subject to change without notice and revision of
this document. For browser-based versions of this data sheet, refer to the left-hand navigation.
PACKAGE OPTION ADDENDUM
www.ti.com 11-Jan-2021
Addendum-Page 1
PACKAGING INFORMATION
Orderable Device Status
(1)
Package Type Package
Drawing Pins Package
Qty Eco Plan
(2)
Lead finish/
Ball material
(6)
MSL Peak Temp
(3)
Op Temp (°C) Device Marking
(4/5)
Samples
LM78L05ACM NRND SOIC D 8 95 Non-RoHS
& Green Call TI Call TI 0 to 125 LM78L
05ACM
LM78L05ACM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM 0 to 125 LM78L
05ACM
LM78L05ACMX NRND SOIC D 8 2500 Non-RoHS
& Green Call TI Call TI 0 to 125 LM78L
05ACM
LM78L05ACMX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM 0 to 125 LM78L
05ACM
LM78L05ACZ/LFT1 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type 0 to 125 LM78L
05ACZ
LM78L05ACZ/LFT3 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type 0 to 125 LM78L
05ACZ
LM78L05ACZ/LFT4 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type 0 to 125 LM78L
05ACZ
LM78L05ACZ/LFT7 ACTIVE TO-92 LP 3 2000 RoHS & Green SN N / A for Pkg Type 0 to 125 LM78L
05ACZ
LM78L05ACZ/NOPB ACTIVE TO-92 LP 3 1800 RoHS & Green SN N / A for Pkg Type 0 to 125 LM78L
05ACZ
LM78L05AIM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM78L
05AM
LM78L05AIMX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM -40 to 125 LM78L
05AM
LM78L05ITP/NOPB ACTIVE DSBGA YPB 8 250 RoHS & Green SNAGCU Level-1-260C-UNLIM -40 to 85 P
03
LM78L05ITPX/NOPB ACTIVE DSBGA YPB 8 3000 RoHS & Green SNAGCU Level-1-260C-UNLIM -40 to 85 P
03
LM78L09ITPX/NOPB ACTIVE DSBGA YPB 8 3000 RoHS & Green SNAGCU Level-1-260C-UNLIM -40 to 85 P
02
LM78L12ACM NRND SOIC D 8 95 Non-RoHS
& Green Call TI Call TI 0 to 125 LM78L
12ACM
LM78L12ACM/NOPB ACTIVE SOIC D 8 95 RoHS & Green SN Level-1-260C-UNLIM 0 to 125 LM78L
12ACM
LM78L12ACMX/NOPB ACTIVE SOIC D 8 2500 RoHS & Green SN Level-1-260C-UNLIM 0 to 125 LM78L