LM78L12ACZ/LFT4 - National Semiconductor

LM78LXX Series

January 15, 2012

3-Terminal Positive Regulators

General Description

The LM78LXX series of three terminal positive regulators is

available with several fixed output voltages making them use-

ful 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 regula-

tion. 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 tech-

nology. With adequate heat sinking the regulator can deliver

100mA 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 dissi-

pation. 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 100mA

■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

Connection Diagrams

SO-8 Plastic (M)

(Narrow Body)

774402

Top View

8-Bump micro SMD

774424

Top View

(Bump Side Down)

(TO-92)

Plastic Package (Z)

774403

Bottom View

micro SMD Marking Orientation

774433

Top View

LM78LXX Series 3-Terminal Positive Regulators

Ordering Information

Package

Type

NSC

Drawing

Output

Voltage

Operating

Temperature

Range

Order

Number

Supplied

micro SMD BPA08AAB 5.0V −40°C to 85°C LM78L05IBP OBSOLETE

LM78L05IBPX OBSOLETE

Thin micro SMD TPA08AAA

5.0V −40°C to 85°C LM78L05ITP Reel of 250

LM78L05ITPX Reel of 3000

9.0V −40°C to 85°C LM78L09ITP OBSOLETE

LM78L09ITPX Reel of 3000

SOIC Narrow M08A

5.0V

0°C to 125°C LM78L05ACM Rail of 95

LM78L05ACMX Reel of 2500

-40°C to 125°C LM78L05AIM Rail of 95

LM78L05AIMX Reel of 2500

12V 0°C to 125°C LM78L12ACM Rail of 95

LM78L12ACMX Reel of 2500

15V 0°C to 125°C LM78L15ACM Rail of 95

LM78L15ACMX Reel of 2500

TO-92 Z03A

5.0V 0°C to 125°C LM78L05ACZ Box of 1800

6.2V 0°C to 125°C LM78L62ACZ Box of 1800

8.2V 0°C to 125°C LM78L82ACZ OBSOLETE

9.0V 0°C to 125°C LM78L09ACZ OBSOLETE

12V 0°C to 125°C LM78L12ACZ Box of 1800

15V 0°C to 125°C LM78L15ACZ Box of 1800

www.ti.com 2

LM78LXX Series

Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,

please contact the Texas Instruments Sales Office/

Distributors for availability and specifications.

Power Dissipation (Note 5) Internally Limited

Input Voltage 35V

Storage Temperature −65°C to +150°C

ESD Susceptibility (Note 2) 1kV

Operating Junction Temperature

LM78LxxACZ, TO-92 0°C to 125°C

LM78LxxACM, SO-8 0°C to 125°C

LM78LxxAIM, SO-8 -40°C to 125°C

LM78LxxIBPX, micro SMD −40°C to 85°C

LM78LxxITP, Thin micro SMD −40°C to 85°C

Soldering Information

Infrared or Convection (20 sec.) 235°C

Wave Soldering (10 sec.) 260°C (lead time)

LM78LXX Electrical Characteristics Limits in standard typeface are for TJ = 25°C, Bold typeface applies

over the entire operating temperature range of the indicated package. Limits are guaranteed by production testing or

correlation techniques using standard Statistical Quality Control (SQC) methods. Unless otherwise specified: IO = 40mA, CI =

0.33μF, CO = 0.1μF.

LM78L05AC / LM78L05I

Unless otherwise specified, VIN = 10V

Symbol Parameter Conditions Min Typ Max Units

VOOutput Voltage 4.8 5 5.2

7V ≤ VIN ≤ 20V

1mA ≤ IO ≤ 40mA

(Note 3)

4.75 5.25

1mA ≤ IO ≤ 70mA

(Note 3)4.75 5.25

ΔVOLine Regulation 7V ≤ VIN ≤ 20V 18 75

8V ≤ VIN ≤ 20V 10 54

ΔVOLoad Regulation 1mA ≤ IO ≤ 100mA 20 60

1mA ≤ IO ≤ 40mA 5 30

IQQuiescent Current 3 5

ΔIQQuiescent Current Change 8V ≤ VIN ≤ 20V 1.0

1mA ≤ IO ≤ 40mA 0.1

VnOutput Noise Voltage f = 10 Hz to 100 kHz (Note

4) 40 μV

Ripple Rejection f = 120 Hz

8V ≤ VIN ≤ 16V 47 62 dB

IPK Peak Output Current 140 mA

Average Output Voltage Tempco IO = 5mA −0.65 mV/°C

VIN (Min) Minimum Value of Input Voltage

Required to Maintain Line Regulation

6.7 7 V

θJA Thermal Resistance

(8-Bump micro SMD)

230.9 °C/W

3 www.ti.com

LM78LXX Series

LM78L62AC

Unless otherwise specified, VIN = 12V

Symbol Parameter Conditions Min Typ Max Units

VOOutput Voltage 5.95 6.2 6.45

8.5V ≤ VIN ≤ 20V

1mA ≤ IO ≤ 40mA

(Note 3)

5.9 6.5

1mA ≤ IO ≤ 70mA

(Note 3)5.9 6.5

ΔVOLine Regulation 8.5V ≤ VIN ≤ 20V 65 175

9V ≤ VIN ≤ 20V 55 125

ΔVOLoad Regulation 1mA ≤ IO ≤ 100mA 13 80

1mA ≤ IO ≤ 40mA 6 40

IQQuiescent Current 2 5.5

ΔIQQuiescent Current Change 8V ≤ VIN ≤ 20V 1.5

1mA ≤ IO ≤ 40mA 0.1

VnOutput Noise Voltage f = 10 Hz to 100 kHz

(Note 4)50 μV

Ripple Rejection f = 120 Hz

10V ≤ VIN ≤ 20V 40 46 dB

IPK Peak Output Current 140 mA

Average Output Voltage Tempco IO = 5mA −0.75 mV/°C

VIN (Min) Minimum Value of Input Voltage

Required to Maintain Line Regulation

7.9 V

LM78L82AC

Unless otherwise specified, VIN = 14V

Symbol Parameter Conditions Min Typ Max Units

VOOutput Voltage 7.87 8.2 8.53

11V ≤ VIN ≤ 23V

1mA ≤ IO ≤ 40mA

(Note 3)

7.8 8.6

1mA ≤ IO ≤ 70mA

(Note 3)7.8 8.6

ΔVOLine Regulation 11V ≤ VIN ≤ 23V 80 175

12V ≤ VIN ≤ 23V 70 125

ΔVOLoad Regulation 1mA ≤ IO ≤ 100mA 15 80

1mA ≤ IO ≤ 40mA 8 40

IQQuiescent Current 2 5.5

ΔIQQuiescent Current Change 12V ≤ VIN ≤ 23V 1.5

1mA ≤ IO ≤ 40mA 0.1

VnOutput Noise Voltage f = 10 Hz to 100 kHz

(Note 4)60 μV

Ripple Rejection f = 120 Hz

12V ≤ VIN ≤ 22V 39 45 dB

IPK Peak Output Current 140 mA

www.ti.com 4

LM78LXX Series

Symbol Parameter Conditions Min Typ Max Units

Average Output Voltage Tempco IO = 5mA −0.8 mV/°C

VIN (Min) Minimum Value of Input Voltage

Required to Maintain Line Regulation 9.9 V

LM78L09AC / LM78L09I

Unless otherwise specified, VIN = 15V

Symbol Parameter Conditions Min Typ Max Units

VOOutput Voltage 8.64 9.0 9.36

11.5V ≤ VIN ≤ 24V

1mA ≤ IO ≤ 40mA

(Note 3)

8.55 9.45

1mA ≤ IO ≤ 70mA

(Note 3)8.55 9.45

ΔVOLine Regulation 11.5V ≤ VIN ≤ 24V 100 200

13V ≤ VIN ≤ 24V 90 150

ΔVOLoad Regulation 1mA ≤ IO ≤ 100mA 20 90

1mA ≤ IO ≤ 40mA 10 45

IQQuiescent Current 2 5.5

ΔIQQuiescent Current Change 11.5V ≤ VIN ≤ 24V 1.5

1mA ≤ IO ≤ 40mA 0.1

VnOutput Noise Voltage 70 μV

Ripple Rejection f = 120 Hz

15V ≤ VIN ≤ 25V 38 44 dB

IPK Peak Output Current 140 mA

Average Output Voltage Tempco IO = 5mA −0.9 mV/°C

VIN (Min) Minimum Value of Input Voltage

Required to Maintain Line Regulation 10.7 V

LM78L12AC

Unless otherwise specified, VIN = 19V

Symbol Parameter Conditions Min Typ Max Units

VOOutput Voltage 11.5 12 12.5

14.5V ≤ VIN ≤ 27V

1mA ≤ IO ≤ 40mA

(Note 3)

11.4 12.6

1mA ≤ IO ≤ 70mA

(Note 3)11.4 12.6

ΔVOLine Regulation 14.5V ≤ VIN ≤ 27V 30 180

16V ≤ VIN ≤ 27V 20 110

ΔVOLoad Regulation 1mA ≤ IO ≤ 100mA 30 100

1mA ≤ IO ≤ 40mA 10 50

IQQuiescent Current 3 5

ΔIQQuiescent Current Change 16V ≤ VIN ≤ 27V 1

1mA ≤ IO ≤ 40mA 0.1

VnOutput Noise Voltage 80 μV

5 www.ti.com

LM78LXX Series

Symbol Parameter Conditions Min Typ Max Units

Ripple Rejection f = 120 Hz

15V ≤ VIN ≤ 25 40 54 dB

IPK Peak Output Current 140 mA

Average Output Voltage Tempco IO = 5mA −1.0 mV/°C

VIN (Min) Minimum Value of Input Voltage

Required to Maintain Line Regulation 13.7 14.5 V

LM78L15AC

Unless otherwise specified, VIN = 23V

Symbol Parameter Conditions Min Typ Max Units

VOOutput Voltage 14.4 15.0 15.6

17.5V ≤ VIN ≤ 30V

1mA ≤ IO ≤ 40mA

(Note 3)

14.25 15.75

1mA ≤ IO ≤ 70mA

(Note 3)14.25 15.75

ΔVOLine Regulation 17.5V ≤ VIN ≤ 30V 37 250

20V ≤ VIN ≤ 30V 25 140

ΔVOLoad Regulation 1mA ≤ IO ≤ 100mA 35 150

1mA ≤ IO ≤ 40mA 12 75

IQQuiescent Current 3 5

ΔIQQuiescent Current Change 20V ≤ VIN ≤ 30V 1

1mA ≤ IO ≤ 40mA 0.1

VnOutput Noise Voltage 90 μV

Ripple Rejection f = 120 Hz

18.5V ≤ VIN ≤ 28.5V 37 51 dB

IPK Peak Output Current 140 mA

Average Output Voltage Tempco IO = 5mA −1.3 mV/°C

VIN (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 kΩ in series with 100pF.

Note 3: Power dissipation ≤ 0.75W.

Note 4: Recommended minimum load capacitance of 0.01μF to limit high frequency noise.

Note 5: Typical thermal resistance values for the packages are:

Z Package: θJC = 60 °C/W, = θJA = 230 °C/W

M Package: θJA = 180 °C/W

micro SMD Package: θJA = 230.9°C/W

www.ti.com 6

LM78LXX Series

Typical Performance Characteristics

Maximum Average Power Dissipation (Z Package)

774414

Peak Output Current

774416

Dropout Voltage

774417

Ripple Rejection

774418

Output Impedance

774419

Quiescent Current

774420

7 www.ti.com

LM78LXX Series

Quiescent Current

774421

Equivalent Circuit

LM78LXX

774407

www.ti.com 8

LM78LXX Series

Typical Applications

Fixed Output Regulator

774408

*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

774409

VOUT = 5V + (5V/R1 + IQ) R2

5V/R1 > 3 IQ, load regulation (Lr) ≈ [(R1 + R2)/R1] (Lr of LM78L05)

Current Regulator

774410

IOUT = (VOUT/R1) + IQ

>IQ = 1.5mA over line and load changes

5V, 500mA Regulator with Short Circuit Protection

774411

*Solid tantalum.

**Heat sink Q1.

***Optional: Improves ripple rejection and transient response.

Load Regulation: 0.6% 0 ≤ IL ≤ 250mA pulsed with tON = 50ms.

9 www.ti.com

LM78LXX Series

±15V, 100mA Dual Power Supply

774412

*Solid tantalum.

Variable Output Regulator 0.5V-18V

774413

*Solid tantalum.

VOUT = VG + 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

www.ti.com 10

LM78LXX Series

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 COUNTERCLOCK-

WISE.

5. XXX IN DRAWING NUMBER REPRESENTS PACKAGE SIZE VARIATION WHERE X1 IS PACKAGE WIDTH, X2 IS PACKAGE LENGTH AND X3 IS PACKAGE

HEIGHT.

6. REFERENCE JEDEC REGISTRATION MO-211, VARIATION BC.

8-Bump micro SMD

NS Package Number BPA08AAB

X1 = 1.285mm X2 = 1.285mm X3 = 0.850mm

11 www.ti.com

LM78LXX Series

8-Bump Thin micro SMD

NS Package Number TPA08AAA

X1 = 1.285mm X2 = 1.285mm X3 = 0.500mm

S.O. Package (M)

NS Package Number M08A

www.ti.com 12

LM78LXX Series

Molded Offset TO-92 (Z)

NS Package Number Z03A

13 www.ti.com

LM78LXX Series

Notes

LM78LXX Series 3-Terminal Positive Regulators

www.ti.com

IMPORTANT NOTICE

Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, modifications, enhancements, improvements,

and other changes to its products and services at any time and to discontinue any product or service without notice. Customers should

obtain the latest relevant information before placing orders and should verify that such information is current and complete. All products are

sold subject to TI’s terms and conditions of sale supplied at the time of order acknowledgment.

TI warrants performance of its hardware products to the specifications applicable at the time of sale in accordance with TI’s standard

warranty. Testing and other quality control techniques are used to the extent TI deems necessary to support this warranty. Except where

mandated by government requirements, testing of all parameters of each product is not necessarily performed.

TI assumes no liability for applications assistance or customer product design. Customers are responsible for their products and

applications using TI components. To minimize the risks associated with customer products and applications, customers should provide

adequate design and operating safeguards.

TI does not warrant or represent that any license, either express or implied, is granted under any TI patent right, copyright, mask work right,

or other TI intellectual property right relating to any combination, machine, or process in which TI products or services are used. Information

published by TI regarding third-party products or services does not constitute a license from TI to use such products or services or a

warranty or endorsement thereof. Use of such information may require a license from a third party under the patents or other intellectual

property of the third party, or a license from TI under the patents or other intellectual property of TI.

Reproduction of TI information in TI data books or data sheets is permissible only if reproduction is without alteration and is accompanied

by all associated warranties, conditions, limitations, and notices. Reproduction of this information with alteration is an unfair and deceptive

business practice. TI is not responsible or liable for such altered documentation. Information of third parties may be subject to additional

restrictions.

Resale of TI products or services with statements different from or beyond the parameters stated by TI for that product or service voids all

express and any implied warranties for the associated TI product or service and is an unfair and deceptive business practice. TI is not

responsible or liable for any such statements.

TI products are not authorized for use in safety-critical applications (such as life support) where a failure of the TI product would reasonably

be expected to cause severe personal injury or death, unless officers of the parties have executed an agreement specifically governing

such use. Buyers represent that they have all necessary expertise in the safety and regulatory ramifications of their applications, and

acknowledge and agree that they are solely responsible for all legal, regulatory and safety-related requirements concerning their products

and any use of TI products in such safety-critical applications, notwithstanding any applications-related information or support that may be

provided by TI. Further, Buyers must fully indemnify TI and its representatives against any damages arising out of the use of TI products in

such safety-critical applications.

TI products are neither designed nor intended for use in military/aerospace applications or environments unless the TI products are

specifically designated by TI as military-grade or "enhanced plastic."Only products designated by TI as military-grade meet military

specifications. Buyers acknowledge and agree that any such use of TI products which TI has not designated as military-grade is solely at

the Buyer's risk, and that they are solely responsible for compliance with all legal and regulatory requirements in connection with such use.

TI products are neither designed nor intended for use in automotive applications or environments unless the specific TI products are

designated by TI as compliant with ISO/TS 16949 requirements. Buyers acknowledge and agree that, if they use any non-designated

products in automotive applications, TI will not be responsible for any failure to meet such requirements.

Following are URLs where you can obtain information on other Texas Instruments products and application solutions:

Products Applications

Audio www.ti.com/audio Automotive and Transportation www.ti.com/automotive

Amplifiers amplifier.ti.com Communications and Telecom www.ti.com/communications

Data Converters dataconverter.ti.com Computers and Peripherals www.ti.com/computers

DLP®Products www.dlp.com Consumer Electronics www.ti.com/consumer-apps

DSP dsp.ti.com Energy and Lighting www.ti.com/energy

Clocks and Timers www.ti.com/clocks Industrial www.ti.com/industrial

Interface interface.ti.com Medical www.ti.com/medical

Logic logic.ti.com Security www.ti.com/security

Power Mgmt power.ti.com Space, Avionics and Defense www.ti.com/space-avionics-defense

Microcontrollers microcontroller.ti.com Video and Imaging www.ti.com/video

RFID www.ti-rfid.com

OMAP Mobile Processors www.ti.com/omap

Wireless Connectivity www.ti.com/wirelessconnectivity

TI E2E Community Home Page e2e.ti.com

Mailing Address: Texas Instruments, Post Office Box 655303, Dallas, Texas 75265