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Linear & low-dropout (LDO) regulators

LM2941C

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1-A, 26-V, high-PSRR, adjustable low-dropout voltage regulator with enable from 0°C to 125°C

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Data sheet

LM2941C

ACTIVE
Data sheet Order now

Product details

Output options Adjustable Output Iout (max) (A) 1 Vin (max) (V) 26 Vin (min) (V) -15 Vout (max) (V) 20 Vout (min) (V) 5 Rating Catalog Noise (µVrms) 38 PSRR at 100 KHz (dB) 67 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 32, 41 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Features Enable Accuracy (%) 2.8 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) 0 to 125
Output options Adjustable Output Iout (max) (A) 1 Vin (max) (V) 26 Vin (min) (V) -15 Vout (max) (V) 20 Vout (min) (V) 5 Rating Catalog Noise (µVrms) 38 PSRR at 100 KHz (dB) 67 Iq (typ) (mA) 10 Thermal resistance θJA (°C/W) 32, 41 Load capacitance (min) (µF) 22 Regulated outputs (#) 1 Features Enable Accuracy (%) 2.8 Dropout voltage (Vdo) (typ) (mV) 500 Operating temperature range (°C) 0 to 125
TO-220 (KC) 5 45.212 mm² 10.16 x 4.45 TO-220 (NDH) 5 86.0552 mm² 10.16 x 8.47 TO-220 (NEB) 5 46.4312 mm² 10.16 x 4.57 TO-263 (KTT) 5 154.8384 mm² 10.16 x 15.24
  • Operating VIN Range: 6 V to 26 V
  • Output Voltage Adjustable From 5 V to 20 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Trimmed Reference Voltage
  • Reverse Battery Protection
  • Internal Short-Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested
  • TTL, CMOS Compatible ON/OFF Switch
  • WSON Space-Saving Package
  • Operating VIN Range: 6 V to 26 V
  • Output Voltage Adjustable From 5 V to 20 V
  • Dropout Voltage Typically 0.5 V at IOUT = 1 A
  • Output Current in Excess of 1 A
  • Trimmed Reference Voltage
  • Reverse Battery Protection
  • Internal Short-Circuit Current Limit
  • Mirror Image Insertion Protection
  • P+ Product Enhancement Tested
  • TTL, CMOS Compatible ON/OFF Switch
  • WSON Space-Saving Package

The LM2941 positive voltage regulator features the ability to source 1 A of output current with a typical dropout voltage of 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground pin current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3 V).

Designed also for vehicular applications, the LM2941 and all regulated circuitry are protected from reverse battery installations or two-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. Familiar regulator features such as short circuit and thermal overload protection are also provided.

The LM2941 positive voltage regulator features the ability to source 1 A of output current with a typical dropout voltage of 0.5 V and a maximum of 1 V over the entire temperature range. Furthermore, a quiescent current reduction circuit has been included which reduces the ground pin current when the differential between the input voltage and the output voltage exceeds approximately 3 V. The quiescent current with 1 A of output current and an input-output differential of 5 V is therefore only 30 mA. Higher quiescent currents only exist when the regulator is in the dropout mode (VIN − VOUT ≤ 3 V).

Designed also for vehicular applications, the LM2941 and all regulated circuitry are protected from reverse battery installations or two-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. Familiar regulator features such as short circuit and thermal overload protection are also provided.
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* Data sheet LM2941x 1-A Low Dropout Adjustable Regulator datasheet (Rev. I) PDF | HTML 12 Jan 2015

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Package Pins CAD symbols, footprints & 3D models
TO-220 (KC) 5 Ultra Librarian
TO-220 (NDH) 5 Ultra Librarian
TO-220 (NEB) 5 Ultra Librarian
TO-263 (KTT) 5 Ultra Librarian
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