LM2940QML

ACTIVE

Military Grade 1A 5V Output Linear Regulator / LDO

Product details

Output options Fixed Output Iout (max) (A) 1 Vin (max) (V) 26 Vin (min) (V) 6 Vout (max) (V) 5 Vout (min) (V) 5 Fixed output options (V) 5 Rating Military Noise (µVrms) 150 PSRR at 100 KHz (dB) 50 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 136 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 5 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) -55 to 125
Output options Fixed Output Iout (max) (A) 1 Vin (max) (V) 26 Vin (min) (V) 6 Vout (max) (V) 5 Vout (min) (V) 5 Fixed output options (V) 5 Rating Military Noise (µVrms) 150 PSRR at 100 KHz (dB) 50 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 136 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Accuracy (%) 5 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) -55 to 125
CFP (NAC) 16 62.9285 mm² 9.91 x 6.35 WAFERSALE (YS) See data sheet
  • Available with Radiation Ensure
    • ELDRS Free 100 krad(Si)
  • Dropout Voltage Typically 0.5V @IO = 1A
  • Output Current in Excess of 1A
  • Output Voltage Trimmed Before Assembly
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection

All trademarks are the property of their respective owners.

  • Available with Radiation Ensure
    • ELDRS Free 100 krad(Si)
  • Dropout Voltage Typically 0.5V @IO = 1A
  • Output Current in Excess of 1A
  • Output Voltage Trimmed Before Assembly
  • Reverse Battery Protection
  • Internal Short Circuit Current Limit
  • Mirror Image Insertion Protection

All trademarks are the property of their respective owners.

The LM2940 positive voltage regulator features the ability to source 1A of output current with a dropout voltage of typically 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an input-output differential of 5V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3V).

Designed also for vehicular applications, the LM2940 and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940 cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

The LM2940 positive voltage regulator features the ability to source 1A of output current with a dropout voltage of typically 0.5V and a maximum of 1V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground current when the differential between the input voltage and the output voltage exceeds approximately 3V. The quiescent current with 1A of output current and an input-output differential of 5V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3V).

Designed also for vehicular applications, the LM2940 and all regulated circuitry are protected from reverse battery installations or 2-battery jumps. During line transients, such as load dump when the input voltage can momentarily exceed the specified maximum operating voltage, the regulator will automatically shut down to protect both the internal circuits and the load. The LM2940 cannot be harmed by temporary mirror-image insertion. Familiar regulator features such as short circuit and thermal overload protection are also provided.

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Technical documentation

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Type Title Date
* Data sheet LM2940QML 1A Low Dropout Regulator datasheet (Rev. B) 02 May 2013
* SMD LM2940QML SMD 5962-89587 21 Jun 2016
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
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 LM2940-5.0 MDE 1A Low Dropout Adj Regulator 20 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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CFP (NAC) 16 Ultra Librarian
WAFERSALE (YS)

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