LM140QML

ACTIVE

Military Grade 1A Fixed Output Linear Regulator / LDO

Product details

Output options Fixed Output Iout (max) (A) 1 Vin (max) (V) 35 Vin (min) (V) 17.6 Vout (max) (V) 15 Vout (min) (V) 5 Fixed output options (V) 5, 12, 15 Rating Military Noise (µVrms) 40 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 7 Thermal resistance θJA (°C/W) 232 Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 2500 Operating temperature range (°C) -55 to 125
Output options Fixed Output Iout (max) (A) 1 Vin (max) (V) 35 Vin (min) (V) 17.6 Vout (max) (V) 15 Vout (min) (V) 5 Fixed output options (V) 5, 12, 15 Rating Military Noise (µVrms) 40 PSRR at 100 KHz (dB) 40 Iq (typ) (mA) 7 Thermal resistance θJA (°C/W) 232 Load capacitance (min) (µF) 0 Regulated outputs (#) 1 Accuracy (%) 2 Dropout voltage (Vdo) (typ) (mV) 2500 Operating temperature range (°C) -55 to 125
DIESALE (Y) See data sheet TO-CAN (K) 2 989.0252 mm² 38.938 x 25.4 TO-CAN (NDT) 3 91.6742 mm² 10.03 x 9.14
  • Complete Specifications at 1.0A and 0.5A Loads
  • No External Components
  • Internal Thermal Overload Protection
  • Internal Short Circuit Current-Limiting
  • Output Transistor Safe-Area Compensation

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  • Complete Specifications at 1.0A and 0.5A Loads
  • No External Components
  • Internal Thermal Overload Protection
  • Internal Short Circuit Current-Limiting
  • Output Transistor Safe-Area Compensation

All trademarks are the property of their respective owners.

The monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 0.5A 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 monolithic 3-terminal positive voltage regulators employ internal current-limiting, thermal shutdown and safe-area compensation, making them essentially indestructible. If adequate heat sinking is provided, they can deliver over 0.5A 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.

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Technical documentation

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Type Title Date
* Data sheet LM140QML Three Terminal Positive Regulators datasheet (Rev. B) 01 May 2013
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note AN-103 LM340 Series Three Terminal Positive Regulators (Rev. A) 06 May 2013
Application note AN-1148 Linear Regulators: Theory of Operation and Compensation (Rev. B) 06 May 2013
Application note Method For Cal Output Voltage Tolerances in Adj Regs (Rev. A) 05 May 2013
More literature Die D/S LM140KG-12 MD8 Series 3-Terminal Positive Regulators 18 Sep 2012
More literature Die D/S LM140KG-5 MD8 Series 3-Terminal Positive Regulators 18 Sep 2012
Application note Packaging Limits Range of Linear Regulators 08 May 2010
Application note Digital Designer's Guide to Linear Voltage Regulators & Thermal Mgmt (LDO) (Rev. A) 04 Jun 2008
Application note Understanding the Terms and Definitions of LDO Voltage Regulators 21 Oct 1999

Design & development

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DIESALE (Y)
TO-CAN (K) 2 Ultra Librarian
TO-CAN (NDT) 3 Ultra Librarian

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