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Product details

Parameters

Output options Adjustable Output Iout (Max) (A) 1 Vin (Max) (V) 26 Vin (Min) (V) 6 Vout (Max) (V) 20 Vout (Min) (V) 5 Noise (uVrms) 600 Iq (Typ) (mA) 10 Thermal resistance θJA (°C/W) 41 Load capacitance (Min) (µF) 22 Rating Catalog Regulated outputs (#) 1 Features Enable Accuracy (%) 5 PSRR @ 100 KHz (dB) 67 Dropout voltage (Vdo) (Typ) (mV) 500 Operating temperature range (C) -40 to 125 open-in-new Find other Linear regulators (LDO)

Package | Pins | Size

TO-220 (KC) 5 86 mm² 10.2 x 8.7 TO-220 (NDH) 5 86 mm² 10.16 x 8.47 TO-263 (KTT) 5 155 mm² 10.16 x 15.24 WSON (NGN) 8 16 mm² 4 x 4 open-in-new Find other Linear regulators (LDO)

Features

  • 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
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Description

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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Technical documentation

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Type Title Date
* Datasheet LM2941x 1-A Low Dropout Adjustable Regulator datasheet (Rev. I) Jan. 12, 2015
Technical articles LDO basics: capacitor vs. capacitance Aug. 01, 2018
Technical articles LDO Basics: Preventing reverse current Jul. 25, 2018
Technical articles LDO basics: introduction to quiescent current Jun. 20, 2018
Technical articles LDO basics: noise – part 1 Jun. 14, 2017
More literature Die D/S LM2941 MDE 1A Low Dropout Adjustable Regulator Dec. 20, 2012

Design & development

For additional terms or required resources, click any title below to view the detail page where available.

Design tools & simulation

SIMULATION MODELS Download
SNVM602A.ZIP (57 KB) - PSpice Model
SIMULATION MODELS Download
SNVM699.ZIP (10 KB) - TINA-TI Reference Design
SIMULATION MODELS Download
SNVM700.TSC (98 KB) - TINA-TI Spice Model
SIMULATION MODELS Download
SNVMAB1.ZIP (2 KB) - PSpice Model

CAD/CAE symbols

Package Pins Download
DDPAK/TO-263 (KTT) 5 View options
TO-220 (KC) 5 View options
TO-220 (NDH) 5 View options
WSON (NGN) 8 View options

Ordering & quality

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