LM140K-5.0

Active

Texas Instruments

1A FIXED OUTPUT LINEAR REGULATOR / LDO

Find alt

Alpha

LM140K-5.0

Active

Texas Instruments

1A FIXED OUTPUT LINEAR REGULATOR / LDO

Find alt

Alpha

Description Specifications Series Pricing CAD Documents

Description

General part information

LM140K Series

The LM140K monolithic 3-terminal positive voltage regulator employs internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 1.0A output current. They are intended as fixed voltage regulators in a wide range of applications including local (on-card) regulation for elimination of noise and distribution problems associated with single-point regulation. In addition to use as fixed voltage regulators, these devices can be used with external components to obtain adjustable output voltages and currents.

Considerable effort was expended to make the entire series of regulators easy to use and minimize the number of external components. It is not necessary to bypass the output, although this does improve transient response. Input bypassing is needed only if the regulator is located far from the filter capacitor of the power supply.

The LM140K is available in 5V, 12V and 15V options in the steel TO-3 power package.

Technical Specifications

Parameters and characteristics for this part

Specification	LM140K-5.0

Current - Output	1 A
Current - Quiescent (Iq)	6 mA
Mounting Type	Through Hole
Number of Regulators	1
Operating Temperature (Max)	125 °C
Operating Temperature (Min)	-55 °C
Output Configuration	Positive
Output Type	Fixed
Package / Case	TO-3, TO-204AA
Package Name	TO-3-2
Protection Features	Short Circuit, Over Temperature
PSRR	80 dB
Voltage - Input (Max)	35 V p-p
Voltage - Output (Min/Fixed)	5 V
Voltage Dropout (Max)	2 V

LM140K Series

1A Fixed Output Linear Regulator / LDO

Part	Current - Quiescent (Iq)	Output Type	Number of Regulators	Current - Output	PSRR	Mounting Type	Current - Supply (Max)	Voltage - Input (Max)	Voltage - Output (Min/Fixed)	Output Configuration	Voltage Dropout (Max)	Operating Temperature (Max)	Operating Temperature (Min)	Package / Case	Protection Features	Package Name
Texas Instruments LM140LAH-15/NOPB	3 mA	Fixed	1	100 mA	72 dB	Through Hole	4.5 mA	35 V p-p	15 V	Positive	2 V	125 °C	-55 °C	TO-205AD TO-39-3 Metal Can	Over Temperature Short Circuit	TO-3
Texas Instruments LM140LAH-12	3 mA	Fixed	1	100 mA	72 dB	Through Hole	4.5 mA	35 V p-p	12 V	Positive	2 V	125 °C	-55 °C	TO-205AD TO-39-3 Metal Can	Over Temperature Short Circuit	TO-3
Texas Instruments LM140LAH-12/NOPB	3 mA	Fixed	1	100 mA	72 dB	Through Hole	4.5 mA	35 V p-p	12 V	Positive	2 V	125 °C	-55 °C	TO-205AD TO-39-3 Metal Can	Over Temperature Short Circuit	TO-3
Texas Instruments LM140K-15/NOPB	6 mA	Fixed	1	1 A	70 dB	Through Hole		35 V p-p	15 V	Positive	2 V	125 °C	-55 °C	TO-204AA TO-3	Over Temperature Short Circuit	TO-3-2
Texas Instruments LM140K-5.0/NOPB	6 mA	Fixed	1	1 A	80 dB	Through Hole		35 V p-p	5 V	Positive	2 V	125 °C	-55 °C	TO-204AA TO-3	Over Temperature Short Circuit	TO-3-2
Texas Instruments LM140LAH-15	3 mA	Fixed	1	100 mA	72 dB	Through Hole	4.5 mA	35 V p-p	15 V	Positive	2 V	125 °C	-55 °C	TO-205AD TO-39-3 Metal Can	Over Temperature Short Circuit	TO-3
Texas Instruments LM140LAH-5.0	3 mA	Fixed	1	100 mA	72 dB	Through Hole	4.5 mA	35 V p-p	5 V	Positive	2 V	125 °C	-55 °C	TO-205AD TO-39-3 Metal Can	Over Temperature Short Circuit	TO-3
Texas Instruments LM140K-12	6 mA	Fixed	1	1 A	72 dB	Through Hole		35 V p-p	12 V	Positive	2 V	125 °C	-55 °C	TO-205AD TO-39-3 Metal Can	Over Temperature Short Circuit	TO-3
Texas Instruments LM140K-15	6 mA	Fixed	1	1 A	70 dB	Through Hole		35 V p-p	15 V	Positive	2 V	125 °C	-55 °C	TO-204AA TO-3	Over Temperature Short Circuit	TO-3-2
Texas Instruments LM140K-12/NOPB	6 mA	Fixed	1	1 A	72 dB	Through Hole		35 V p-p	12 V	Positive	2 V	125 °C	-55 °C	TO-205AD TO-39-3 Metal Can	Over Temperature Short Circuit	TO-3

Pricing

Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly

Create a free account to access distributor pricing data.

CAD

3D models and CAD resources for this part

Documents

Technical documentation and resources

LM140K Series 3-Terminal Positive Regulators datasheet