Datasheet LM79L15ACMX, LM79L15ACMWA, LM79L15ACM, LM79L12ACMWA, LM79L12ACMDA Datasheet (NSC)

LM320L/LM79LXXAC/LM13121 Series
3-Terminal Negative Regulators

General Description

The LM320L/LM79LXXAC/LM13121 dual marked series of
3-terminal negative voltage regulators features fixed output
voltages of −5V, −12V, and −15V with output current capa­bilities in excess of 100mA. These devices were designed
using the latest computer techniques for optimizing the pack­aged IC thermal/electrical performance. The LM79LXXAC
series, even when combined with a minimum output com­pensation capacitor of 0.1µF, exhibits an excellent transient
response, a maximum line regulation of 0.07% V

O

/V, and a

maximum load regulation of 0.01% V

O

/mA.

The LM320L/LM79LXXAC/LM13121 series also includes, as
self-protection circuitry: safe operating area circuitry for out­put transistor power dissipation limiting, a temperature inde­pendent short circuit current limit for peak output current
limiting, and a thermal shutdown circuit to prevent excessive
junction temperature. Although designed primarily as fixed
voltage regulators, these devices may be combined with
simple external circuitry for boosted and/or adjustable volt­ages and currents. The LM79LXXAC series is available in

the 3-lead TO-92 package, 8-lead SOIC package, and the
6-Bump micro SMD package. The LM320L series is avail­able in the 3-lead TO-92 package.

For output voltage other than −5V, −12V and −15V, the
LM137L series provides an output voltage range from 1.2V
to 47V.

Features

n Preset output voltage error is less than±5% overload,

line and temperature

n Specified at an output current of 100mA
n Easily compensated with a small 0.1µF output

capacitor

n Internal short-circuit, thermal and safe operating area

protection

n Easily adjustable to higher output voltages
n Maximum line regulation less than 0.07% V

OUT

/V

n Maximum load regulation less than 0.01% V

OUT

/mA

n See AN-1112 for micro SMD considerations

Typical Applications

Fixed Output Regulator

00774801

*Required if the regulator is located far from the power supply filter. A 1µF
aluminum electrolytic may be substituted.

*

*

Required for stability. A 1µF aluminum electrolytic may be substituted.

Adjustable Output Regulator

00774803

−V0= −5V − (5V/R1 + IQ)•R2,

5V/R1

>

3I

Q

Connection Diagrams

6-Bump micro SMD

00774820

Bump Side Down

TO-92 Plastic Package (Z)

00774802

Bottom View

January 2003

LM320L/LM79LXXAC/LM13121 Series 3-Terminal Negative Regulators

© 2003 National Semiconductor Corporation DS007748 www.national.com

Connection Diagrams (Continued)

SO-8 Plastic (Narrow Body)

00774804

Top View

Ordering Information

Package Part Number Package Marking Transport Media NSC Drawing

8-Lead SOIC LM79L05ACM LM79L05ACM 95 Units/Rail M08A

LM79L05ACMX 2.5k Units Tape and Reel

LM79L13ACM LM79L12ACM 95 Units/Rail

LM79L13ACMX 2.5k Units Tape and Reel

LM79L15ACM LM79L15ACM 95 Units/Rail

LM79L15ACMX 2.5k Units Tape and Reel

3-Pin TO-92 LM13121Z-5.0 320L79L05 1800 Units Per Box Z03A

LM13121Z-12 320L79L12 1800 Units Per Box

LM13121Z-15 320L79L15 1800 Units Per Box

6-Bump

micro SMD

LM79L05ACTL XTPB 250 Units Tape and Reel TLA06AMA

LM79L05ACTLX 3k Units Tape and Reel

LM320L/LM79LXXAC/LM13121

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Absolute Maximum Ratings (Note 1)

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales Office/
Distributors for availability and specifications.

Input Voltage

V

O

= −5V, −12V, −15V −35V

Internal Power Dissipation (Note 2) Internally Limited

Operating Temperature Range 0˚C to +70˚C

Maximum Junction Temperature +125˚C

Storage Temperature Range −55˚C to +150˚C

Lead Temperature

(Soldering, 10 sec.) 260˚C

Electrical Characteristics (Note 3)

TA= 0˚C to +70˚C unless otherwise noted.

Output Voltage −5V −12V −15V

Input Voltage (unless otherwise noted) −10V −17V −20V Units

Symbol Parameter Conditions Min Typ Max Min Typ Max Min Typ Max

V

O

Output
Voltage

TJ= 25˚C, IO= 100mA −5.2 −5 −4.8 −12.5 −12 −11.5 −15.6 −15 −14.4

1mA ≤ IO≤ 100mA −5.25 −4.75 −12.6 −11.4 −15.75 −14.25

V

MIN

≤ VIN≤ V

MAX

(−20 ≤ VIN≤ −7.5) (−27 ≤ VIN≤ −14.8) (−30 ≤ VIN≤ −18) V

1mA ≤ I

O

≤ 40mA −5.25 −4.75 −12.6 −11.4 −15.75 −14.25

V

MIN

≤ VIN≤ V

MAX

(−20 ≤ VIN≤ −7) (−27 ≤ VIN≤ −14.5) (−30 ≤ VIN≤ −17.5)

∆V

O

Line
Regulation

TJ= 25˚C, IO= 100mA 60 45 45 mV

V

MIN

≤ VIN≤ V

MAX

(−20 ≤ VIN≤ −7.3) (−27 ≤ VIN≤ −14.6) (−30 ≤ VIN≤ −17.7) V

T

J

= 25˚C, IO= 40mA 60 45 45 mV

V

MIN

≤ VIN≤ V

MAX

(−20 ≤ VIN≤ −7) (−27 ≤ VIN≤ −14.5) (−30 ≤ VIN≤ −17.5) V

∆V

O

Load
Regulation

TJ= 25˚C

50 100 125 mV

1mA ≤ IO≤ 100mA

∆V

O

Long Term
Stability

IO= 100mA 20 48 60 mV/khrs

I

Q

Quiescent
Current

IO= 100mA 2 6 2 6 2 6 mA

∆I

Q

Quiescent
Current

1mA ≤ IO≤ 100mA 0.3 0.3 0.3

Change 1mA ≤ IO≤ 40mA 0.1 0.1 0.1 mA

I

O

= 100mA 0.25 0.25 0.25 mA

V

MIN

≤ VIN≤ V

MAX

(−20 ≤ VIN≤ −7.5) (−27 ≤ VIN≤ −14.8) (−30 ≤ VIN≤ −18) V

V

n

Output Noise
Voltage

TJ= 25˚C, IO= 100mA

40 96 120 µV

f = 10Hz − 10kHz

Ripple
Rejection

TJ= 25˚C, IO= 100mA

50 52 50 dB

f = 120Hz

Input Voltage T

J

= 25˚C, IO= 100mA −7.3 −14.6 −17.7 V

Required to I

O

= 40mA −7.0 −14.5 −17.5 V

Maintain Line

Regulation

Note 1: Absolute Maximum Ratings indicate limits beyond which damage to the device may occur. Operating Ratings indicate conditions for which the device is
functional, but do not guarantee specific performance limits.

Note 2: Thermal resistance of Z package is 60˚C/W θ

JC

, 232˚C/W θJAat still air, and 88˚C/W at 400 ft/min of air. The M package θJAis 180˚C/W in still air. The

maximum junction temperature shall not exceed 125˚C on electrical parameters.

Note 3: To ensure constant junction temperature, low duty cycle pulse testing is used.

LM320L/LM79LXXAC/LM13121

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Typical Performance Characteristics

Maximum Average Power Dissipation (TO-92) Peak Output Current

00774811

00774812

Short Circuit Output Current Dropout Voltage

00774813

00774814

Ripple Rejection

Output Voltage vs. Temperature (Normalized to 1V

@

25˚C)

00774815

00774816

LM320L/LM79LXXAC/LM13121

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Typical Performance Characteristics (Continued)

Quiescent Current Output Impedance

00774817 00774818

Typical Applications

±

15V, 100mA Dual Power Supply

00774806

LM320L/LM79LXXAC/LM13121

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Schematic Diagrams

−5V

00774809

−12V and −15V

00774810

LM320L/LM79LXXAC/LM13121

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Physical Dimensions inches (millimeters)

unless otherwise noted

SOIC Package (M)

NS Package Number M08A

Molded Offset TO-92 (Z)

NS Package Number Z03A

LM320L/LM79LXXAC/LM13121

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Physical Dimensions inches (millimeters) unless otherwise noted (Continued)

NOTES: UNLESS OTHERWISE SPECIFIED

1. EPOXY COATING.

2. 63Sn/67Pb EUTECTIC BUMP.

3. RECOMMEND NON-SOLDER MASK DEFINED LANDING PAD.

4. PIN A1 ESTABLISHED BY LOWER LEFT CORNER WITH RESPECT TO TEXT ORIENTATION.

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 JEEC REGISTRATION MO-211, VARIATION BC.

6-Bump micro SMD

NS Package Number TLA06AMA

X

1

= 1006µm X2= 1793µm X3= 600µm

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DEVICES OR SYSTEMS WITHOUT THE EXPRESS WRITTEN APPROVAL OF THE PRESIDENT AND GENERAL
COUNSEL OF NATIONAL SEMICONDUCTOR CORPORATION. As used herein:

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whose failure to perform when properly used in
accordance with instructions for use provided in the
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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.

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LM320L/LM79LXXAC/LM13121 Series 3-Terminal Negative 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.