LP2950: Linear Voltage Regulator, LDO, Low Power, 100 mA

The LP2950 and LP2951 are micropower low dropout (LDO) linear voltage regulators that are specifically designed to maintain proper regulation with an extremely low input-to-output voltage differential. These devices feature a very low quiescent bias current of 75 µA and are capable of supplying output currents in excess of 100 mA. Internal current and thermal limiting protection is provided.The LP2951 LDO linear voltage regulator has three additional features. The first is the Errorbar Output that can be used to signal external circuitry of an out of regulation condition, or as a microprocessor power-on reset. The second feature allows the output voltage to be preset to 5.0 V, 3.3 V or 3.0 V output (depending on the version) or programmed from 1.25 V to 29 V. It consists of a pinned out resistor divider along with direct access to the Error Amplifier feedback input. The third feature is a Shutdown input that allows a logic level signal to turn-off or turn-on the regulator output. Due to the low input-to-output voltage differential and bias current specifications, these devices are ideally suited for battery powered computer, consumer, and industrial equipment where an extension ofuseful battery life is desirable. The LP2950 is available in the three pin case 29 and DPAK packages, and the LP2951 is available in the eight pin dual-in-line, SO-8 and Micro-8 surface mount packages.The 'A' suffix devices feature an initial output voltage tolerance +/-0.5%.

Features
  • Low Quiescent Bias Current of 75 mA
  • Low Input-to-Output Voltage Differential of 50 mV at 100 mA and 380 mV at 100 mA
  • 5.0 V, 3.3 V or 3.0 V +/- 0.5% Allows Use as a Regulator or Reference
  • Extremely Tight Line and Load Regulation
  • Requires Only a 1.0 mF Output Capacitor for Stability
  • Internal Current and Thermal Limiting
  • LP2951 also has Error(bar) Output Signals an Out of Regulation Condition
  • LP2951 also has Output Programmable from 1.25 V to 29 V
  • LP2951 also has Logic Level Shutdown Input
  • Pb-Free Packages are Available
Applications
  • Automotive
Collateral Brochures (1)
Document TitleDocument ID/SizeRevisionRevision Date
Automotive Products Selector GuideSGD516/D (1382kB)18AJul, 2016
Package Drawings (2)
Document TitleDocument ID/SizeRevision
DPAK (SINGLE GAUGE) TO-252369C (34.6kB)F
TO-92 (TO-226) 5.33mm Body Height29-11 (61.7kB)A
Data Sheets (1)
Document TitleDocument ID/SizeRevisionRevision Date
100 mA, Low Power Low Dropout Voltage RegulatorLP2950/D (223kB)29Oct, 2016
Order Information
ProductStatusCompliancePackageMSL*ContainerBudgetary Price/Unit
LP2950ACDT-3.0GActivePb-free Halide freeDPAK-3369C1Tube75$0.5431
LP2950ACDT-3.3RGActivePb-free Halide freeDPAK-3369C1Tape and Reel2500$0.5431
LP2950ACDT-3RKGActivePb-free Halide freeDPAK-3369C1Tape and Reel2500$0.5431
LP2950ACDT-5.0GActivePb-free Halide freeDPAK-3369C1Tube75$0.5431
LP2950ACDT-5RKGActivePb-free Halide freeDPAK-3369C1Tape and Reel2500$0.5431
LP2950ACZ-3.0GActivePb-free Halide freeTO-9229-11NABulk Bag2000$0.3333
LP2950ACZ-3.0RAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.3333
LP2950ACZ-3.3GActivePb-free Halide freeTO-9229-11NABulk Bag2000$0.3333
LP2950ACZ-3.3RAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.3333
LP2950ACZ-5.0GActivePb-free Halide freeTO-9229-11NABulk Bag2000$0.3333
LP2950ACZ-5.0RAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.3333
LP2950CDT-3.0GActivePb-free Halide freeDPAK-3369C1Tube75$0.3467
LP2950CDT-3.0RKGActivePb-free Halide freeDPAK-3369C1Tape and Reel2500$0.3467
LP2950CDT-3.3GActivePb-free Halide freeDPAK-3369C1Tube75$0.328
LP2950CDT-3.3RKGActivePb-free Halide freeDPAK-3369C1Tape and Reel2500$0.328
LP2950CDT-5.0GActivePb-free Halide freeDPAK-3369C1Tube75$0.328
LP2950CDT-5.0RKGActivePb-free Halide freeDPAK-3369C1Tape and Reel2500$0.328
LP2950CZ-3.0GActivePb-free Halide freeTO-9229-11NABulk Bag2000$0.32
LP2950CZ-3.0RAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.32
LP2950CZ-3.3GActivePb-free Halide freeTO-9229-11NABulk Bag2000$0.32
LP2950CZ-3.3RAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.32
LP2950CZ-5.0GActivePb-free Halide freeTO-9229-11NABulk Bag2000$0.32
LP2950CZ-5.0RAGActivePb-free Halide freeTO-9229-11NATape and Reel2000$0.32
LP2950CZ-5.0RPGActivePb-free Halide freeTO-9229-11NATube2000$0.32
Specifications
ProductOutputPolarityVO (V)IO Typ (A)VI Max (V)VDO Typ (V)Iq Typ (mA)PSRR (dB)Noise (µVrms)
LP2950ACDT-3.0GSinglePositive30.1300.350.0934856
LP2950ACDT-3.3RGSinglePositive3.30.1300.350.0934856
LP2950ACDT-3RKGSinglePositive30.1300.350.0934856
LP2950ACDT-5.0GSinglePositive50.1300.350.0934856
LP2950ACDT-5RKGSinglePositive50.1300.350.0934856
LP2950ACZ-3.0GSinglePositive30.1300.350.0934856
LP2950ACZ-3.0RAGSinglePositive30.1300.350.0934856
LP2950ACZ-3.3GSinglePositive3.30.1300.350.0934856
LP2950ACZ-3.3RAGSinglePositive3.30.1300.350.0934856
LP2950ACZ-5.0GSinglePositive50.1300.350.0934856
LP2950ACZ-5.0RAGSinglePositive50.1300.350.0934856
LP2950CDT-3.0GSinglePositive30.1300.350.0934856
LP2950CDT-3.0RKGSinglePositive30.1300.350.0934856
LP2950CDT-3.3GSinglePositive3.30.1300.350.0934856
LP2950CDT-3.3RKGSinglePositive3.30.1300.350.0934856
LP2950CDT-5.0GSinglePositive50.1300.350.0934856
LP2950CDT-5.0RKGSinglePositive50.1300.350.0934856
LP2950CZ-3.0GSinglePositive30.1300.350.0934856
LP2950CZ-3.0RAGSinglePositive30.1300.350.0934856
LP2950CZ-3.3GSinglePositive3.30.1300.350.0934856
LP2950CZ-3.3RAGSinglePositive3.30.1300.350.0934856
LP2950CZ-5.0GSinglePositive50.1300.350.0934856
LP2950CZ-5.0RAGSinglePositive50.1300.350.0934856
LP2950CZ-5.0RPGSinglePositive50.1300.350.0934856
100 mA, Low Power Low Dropout Voltage Regulator (223kB) LP2951
Automotive Products Selector Guide NUP2105
DPAK (SINGLE GAUGE) TO-252 NCV8408
TO-92 (TO-226) 5.33mm Body Height NCV33064