NSC LM340LAZ-5.0, LM340LAZ-15, LM340LAZ-12, LM340LAH-12 Datasheet

February 1995

LM140L/LM340L Series 3-Terminal Positive Regulators

General Description

The LM140L series of three terminal positive regulators is
available with several fixed output voltages making them
useful in a wide range of applications. The LM140LA is an
improved version of the LM78LXX series with a tighter out­put voltage tolerance (specified over the full military temper­ature range), higher ripple rejection, better regulation and
lower quiescent current. The LM140LA regulators have

g

2% V

0.01%/mA load regulation. When used as a zener diode/re-

specification, 0.04%/V line regulation, and

OUT

sistor combination replacement, the LM140LA 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 LM140LA to be used
in logic systems, instrumentation, Hi-Fi, and other solid state
electronic equipment. Although designed primarily as fixed
voltage regulators, these devices can be used with external
components to obtain adjustable voltages and currents.

The LM140LA/LM340LA are available in the low profile
metal three lead TO-39 (H) and the LM340LA are also avail­able in the plastic TO-92 (Z). 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 transistor is provided to
limit internal power dissipation. If internal power dissipation

becomes too high for the heat sinking provided, the thermal
shut-down circuit takes over, preventing the IC from over­heating.

For applications requiring other voltages, see LM117L Data
Sheet.

Features

Y

Line regulation of 0.04%/V

Y

Load regulation of 0.01%/mA

Y

Output voltage tolerances ofg2% at T

g

4% over the temperature range (LM140LA)

g

3% over the temperature range (LM340LA)

Y

Output current of 100 mA

Y

Internal thermal overload protection

Y

Output transistor safe area protection

Y

Internal short circuit current limit

Y

Available in metal TO-39 low profile package

e

j

25§C and

(LM140LA/LM340LA) and plastic TO-92 (LM340LA)

Output Voltage Options

LM140LA-5.0 5V LM340LA-5.0 5V

LM140LA-12 12V LM340LA-12 12V

LM140LA-15 15V LM340LA-15 15V

LM140L/LM340L Series 3-Terminal Positive Regulators

Connection Diagrams

TO-39 Metal Can Package (H)

Bottom View

Order Number LM140LAH-5.0, LM140LAH-5.0/883, LM140LAH-12,

LM140LAH-12/883, LM140LAH-15, LM140LAH-15/883, LM340LAH-5.0, LM340LAH-12 or LM340LAH-15

See NS Package Number H03A

TO-92 Plastic Package (Z)

Bottom View

Order Number LM340LAZ-5.0, LM340LAZ-12 or LM340LAZ-15

See NS Package Number Z03A

C

1995 National Semiconductor Corporation RRD-B30M115/Printed in U. S. A.

TL/H/7782

TL/H/7782– 2

TL/H/7782– 3

Absolute Maximum Ratings

If Military/Aerospace specified devices are required,
please contact the National Semiconductor Sales
Office/Distributors for availability and specifications.
(Note 4)

Input Voltage 35V

Internal Power Dissipation (Note 1) Internally Limited

Electrical Characteristics

Test conditions unless otherwise specified. T
C

IN

e

0.33 mF, C

O

e

0.01 mF.

eb

55§Ctoa125§C (LM140LA), T

A

Output Voltage Option 5.0V 12V 15V

Input Voltage (unless otherwise noted) 10V 19V 23V Units

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

V

Output Voltage T

O

Output Voltage LM140LA I
Over Temp.
(Note 3)

DVOLine Regulation T

Load Regulation T

e

25§C 4.9 5 5.1 11.75 12 12.25 14.7 15 15.3

j

e1b

100 mA 4.8 5.2 11.5 12.5 14.4 15.6

O

LM340LA I

e

25§CI

j

e

25§CI

j

e1b

100 mA or 4.85 5.15 11.65 12.35 14.55 15.45

O

e1b

I

V

I
V

I

40 mA and

O

O

O

O

O

e

V

()V

IN

e

40 mA 18 30 30 65 37 70

e

()V

IN

e

100 mA 18 30 30 65 37 70

e

()V

IN

e1b

40 mA 5 20 10 40 12 50

e1b

100 mA

Long Term
Stability 1000 hrs

I

Quiescent T

O

Current T

DI

Quiescent T

Q

Current Change

V

Output Noise T

N

Voltage f

DV

IN

Ripple Rejection fe120 Hz, V

DV

OUT

e

25§C 3 4.5 3 4.5 3.1 4.5

j

e

125§C

j

e

25§C DLoad I

j

e1b

40 mA 0.1 0.1 0.1

O

DLine 0.5 0.5 0.5 mA

e

V

()V

IN

e

25§C (Note 2)

j

e

10 Hz–10 kHz

e

()V 5562 4754 4552

IN

Input Voltage
Required to
Maintain Line

e

T

j

25§C, I

e

40 mA 7 14.2 17.3 V

O

Regulation

Note 1: Thermal resistance of H-package is typically 26§C/W ijC, 250§C/W ijAstill air, and 94§C/W ijA400 lf/min of air. For the Z-package is 60§C/W ijC, 232§C/

still air, and 88§C/W ijAat 400 lf/min of air. The maximum junction temperature shall not exceed 125§C on electrical parameters.

W i

jA

Note 2: It is recommended that a minimum load capacitor of 0.01 mF be used to limit the high frequency noise bandwidth.

Note 3: The temperature coefficient of V

Note 4: A military RETS specification is available upon request. At the time of printing, the LM140LA-5.0, -12, and -15 RETS specifications complied with the Min

and Max limits in this table. The LM140LAH-5.0, LM140LAH-12, and LM140LAH-15 may also be procured as Standard Military Drawings.

is typically within 0.01% VO/§C.

OUT

Operating Temperature Range

LM140LA
LM340LA 0

b

55§Ctoa125§C

Ctoa70§C

§

Maximum Junction Temperature

Storage Temperature Range

Metal Can (H package)
Molded TO-92

b

65§Ctoa150§C

b

55§Ctoa150§C

Lead Temperature (Soldering, 10 sec.)

Metal Can
Plastic TO-92

e

0§Ctoa70§C (LM340LA), I

A

e

O

(7.2–20) (14.5–27) (17.6– 30)

(7–20) (14.3 – 27) (17.5–30)

(7–25) (14.2 – 30) (17.3–30)

(7.5–25) (14.5–30) (17.5 – 30)

20 40 30 80 35 100

12 24 30

4.2 4.2 4.2

(7.5–25) (14.3–30) (17.5 – 30)

40 80 90 mV

(7.5–18) (14.5–25) (17.5–28.5)

a

a
a

150§C

300§C
230§C

40 mA,

V

mV

mV

mA

dB

2