Product details

Output options Fixed Output Iout (Max) (A) 0.1 Vin (Max) (V) 30 Vin (Min) (V) 2.3 Vout (Max) (V) 5 Vout (Min) (V) 3 Fixed output options (V) 3, 3.3, 5 Noise (uVrms) 100 Iq (Typ) (mA) 0.075 Thermal resistance θJA (°C/W) 51 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Accuracy (%) 3 PSRR @ 100 KHz (dB) 51 Dropout voltage (Vdo) (Typ) (mV) 380 Operating temperature range (C) -40 to 125
Output options Fixed Output Iout (Max) (A) 0.1 Vin (Max) (V) 30 Vin (Min) (V) 2.3 Vout (Max) (V) 5 Vout (Min) (V) 3 Fixed output options (V) 3, 3.3, 5 Noise (uVrms) 100 Iq (Typ) (mA) 0.075 Thermal resistance θJA (°C/W) 51 Rating Catalog Load capacitance (Min) (µF) 1 Regulated outputs (#) 1 Features Accuracy (%) 3 PSRR @ 100 KHz (dB) 51 Dropout voltage (Vdo) (Typ) (mV) 380 Operating temperature range (C) -40 to 125
TO-252 (NDP) 3 40 mm² 7.3 x 6.58 TO-92 (LP) 3 19 mm² 5.2 x 3.68
  • Input Voltage Range: 2.3 V to 30 V
  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • High Accuracy Output Voltage
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
  • LP2951-N Versions Only:
    • Error Flag Warns of Output Dropout
    • Logic-Controlled Electronic Shutdown
    • Output Programmable From 1.24 V to 29 V
  • Input Voltage Range: 2.3 V to 30 V
  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • High Accuracy Output Voltage
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Low Dropout Voltage
  • Extremely Tight Load and Line Regulation
  • Very Low Temperature Coefficient
  • Use as Regulator or Reference
  • Needs Minimum Capacitance for Stability
  • Current and Thermal Limiting
  • Stable With Low-ESR Output Capacitors (10 mΩ to 6 Ω)
  • LP2951-N Versions Only:
    • Error Flag Warns of Output Dropout
    • Logic-Controlled Electronic Shutdown
    • Output Programmable From 1.24 V to 29 V

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.

The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.

The LP2950-N and LP2951-N are micropower voltage regulators with very low quiescent current (75 µA typical) and very low dropout voltage (typical 40 mV at light loads and 380 mV at 100 mA). They are ideally suited for use in battery-powered systems. Furthermore, the quiescent current of the device increases only slightly in dropout, prolonging battery life.

Careful design of the LP2950-N/LP2951-N has minimized all contributions to the error budget. This includes a tight initial tolerance (0.5% typical), extremely good load and line regulation (0.05% typical) and a very low output voltage temperature coefficient, making the part useful as a low-power voltage reference.

One such feature is an error flag output which warns of a low output voltage, often due to falling batteries on the input. It may be used for a power-on reset. A second feature is the logic-compatible shutdown input which enables the regulator to be switched on and off. Also, the part may be pin-strapped for a 5-V, 3-V, or 3.3-V output (depending on the version), or programmed from 1.24 V to 29 V with an external pair of resistors.

The LP2950-N is available in the surface-mount TO-252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8-pin LP2951-N is available in plastic, ceramic dual-in-line, WSON, or metal can packages and offers additional system functions.

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Technical documentation

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Type Title Date
* Data sheet LP295x-N Series of Adjustable Micropower Voltage Regulators datasheet (Rev. Q) PDF | HTML 08 Dec 2017
Application note A Topical Index of TI LDO Application Notes (Rev. F) 27 Jun 2019
Application note AN-1061 Power Conversion in Line-Powered Equipment (Rev. B) 23 Apr 2013
Application note TO-92 Packing Options / Ordering Instructions (Rev. A) 23 Jun 2010

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Evaluation board

MLTLDO2EVM-037 — Universal LDO linear voltage regulator evaluation module for DCY, DDA and KVU packages

The MLTLDO2EVM-037 multipackage low-dropout (LDO) evaluation module (EVM) allows design engineers to evaluate the operation and performance of several common packages of linear regulators for possible use in their own circuit application. This EVM configuration contains a DDA, 3-pin and 5-pin KVU, (...)

User guide: PDF
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Package Pins Download
TO-252 (NDP) 3 View options
TO-92 (LP) 3 View options

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