NSC LM342AG-12MWC, LM140LAH5.0-883, LM140LAH-5.0, LM140LAH-15-883, LM140LAH-15 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 g2% VOUT specification, 0.04%/V line regulation, and 0.01%/mA load regulation. When used as a zener diode/resistor 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

YLine regulation of 0.04%/V

YLoad regulation of 0.01%/mA

YOutput voltage tolerances of g2% at Tj e 25§C and g4% over the temperature range (LM140LA)

g3% over the temperature range (LM340LA)

YOutput current of 100 mA

YInternal thermal overload protection

YOutput transistor safe area protection

YInternal short circuit current limit

YAvailable in metal TO-39 low profile package (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

Connection Diagrams

TO-39 Metal Can Package (H)

TL/H/7782 ± 2

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)

TL/H/7782 ± 3

Bottom View

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

See NS Package Number Z03A

Regulators Positive Terminal-3 Series LM140L/LM340L

C1995 National Semiconductor Corporation

TL/H/7782

RRD-B30M115/Printed in U. S. A.

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

Operating Temperature Range	b55§C to a125§C
LM140LA
LM340LA	0§C to a70§C
Maximum Junction Temperature	a150§C
Storage Temperature Range	b65§C to a150§C
Metal Can (H package)
Molded TO-92	b55§C to a150§C
Lead Temperature (Soldering, 10 sec.)	a300§C
Metal Can
Plastic TO-92	a230§C

Electrical Characteristics

Test conditions unless otherwise specified. TA e b55§C to a125§C (LM140LA), TA e 0§C to a70§C (LM340LA), IO e 40 mA, CIN e 0.33 mF, CO e 0.01 mF.

			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
VO			Output Voltage	Tj e 25§C		4.9	5			5.1	11.75	12	12.25	14.7	15	15.3
			Output Voltage	LM140LA	IO e 1 b 100 mA	4.8				5.2	11.5		12.5	14.4		15.6
			Over Temp.			(7.2 ± 20)					(14.5 ± 27)			(17.6 ± 30)
			(Note 3)														V
				LM340LA	IO e 1 b 100 mA or	4.85				5.15	11.65		12.35	14.55		15.45
					IO e 1 b 40 mA and		(7 ± 20)				(14.3 ± 27)			(17.5 ± 30)
					VIN e ( )V
	DVO		Line Regulation	Tj e 25§C	IO e 40 mA		18			30		30	65		37	70
					VIN e ( )V		(7 ± 25)				(14.2 ± 30)			(17.3 ± 30)
					IO e 100 mA		18			30		30	65		37	70	mV
					VIN e ( )V	(7.5 ± 25)					(14.5 ± 30)			(17.5 ± 30)
			Load Regulation	Tj e 25§C IO e 1 b 40 mA			5			20		10	40		12	50
					IO e 1 b 100 mA		20			40		30	80		35	100
			Long Term				12					24			30		mV
			Stability														1000 hrs
IO			Quiescent	Tj e 25§C			3			4.5		3	4.5		3.1	4.5	mA
			Current	Tj e 125§C						4.2			4.2			4.2
	DIQ		Quiescent	Tj e 25§C	DLoad IO e 1 b 40 mA					0.1			0.1			0.1
			Current Change		DLine					0.5			0.5			0.5	mA
					VIN e ( )V	(7.5 ± 25)					(14.3 ± 30)			(17.5 ± 30)
VN			Output Noise	Tj e 25§C (Note 2)			40					80			90		mV
			Voltage	f e 10 Hz ± 10 kHz
	DVIN		Ripple Rejection	f e 120 Hz, VIN e ( )V		55	62				47	54		45	52		dB
	DVOUT
						(7.5 ± 18)					(14.5 ± 25)			(17.5 ± 28.5)
			Input Voltage
			Required to	Tj e 25§C, IO e 40 mA		7					14.2			17.3			V
			Maintain Line
			Regulation

Note 1: Thermal resistance of H-package is typically 26§C/W ijC, 250§C/W ijA still air, and 94§C/W ijA 400 lf/min of air. For the Z-package is 60§C/W ijC, 232§C/ W ijA still air, and 88§C/W ijA at 400 lf/min of air. The maximum junction temperature shall not exceed 125§C on electrical parameters.

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 VOUT is typically within 0.01% VO/§C.

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.

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