LP2951ACN/NOPB Part Information

Details for LP2951ACN/NOPB by Texas Instruments

Semiconductors - ICs > Power Management ICs - PMIC > Voltage Regulators

Part Description

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 TO252 package and in the popular 3-pin TO-92 package for pin-compatibility with older 5-V regulators. The 8pin LP2951-N is available in plastic, ceramic dual-inline, WSON, or metal can packages and offers additional system functions.

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Part Features

  • 5-V, 3-V, and 3.3-V Output Voltage Versions Available
  • Current and Thermal Limiting
  • Ensured 100-mA Output Current
  • Extremely Low Quiescent Current
  • Extremely Tight Load and Line Regulation
  • High Accuracy Output Voltage
  • Input Voltage Range: 2.3 V to 30 V
  • LP2951-N Versions Only:
  • Low Dropout Voltage
  • Needs Minimum Capacitance for Stability
  • Stable With Low-ESR Output Capacitors (10 mu2126 to 6 u2126)
  • Use as Regulator or Reference
  • Very Low Temperature Coefficient

Part Specifications

Output Type Adjustable
Input Voltage Min 2.3V
Input Voltage Max 30V
Fixed Output Voltage Nom. -
Adjustable Output Voltage Min 1.24V
Adjustable Output Voltage Max 29V
RoHS Compliant

Alternative Part Descriptions

  • Voltage regulator,LP2951ACN 29V | RS Components
  • ADJUSTABLE LDO VOLTAGE REGULATOR, 1.24V TO 29V 0.1A 8-DIP; Output Type:Adjustable; Input Voltage Min:2.3V; Input Voltage Max:30V; Fixed Output Voltage Nom.:-; Adjustable Output Voltage Min:1.24V; Adjustable Output Voltage Max:29V RoHS Compliant: Yes | Newark Electronics
  • LDO Regulator Pos 1.24V to 29V 0.1A 8-Pin PDIP Rail | Avnet America
  • IC: voltage regulator; LDO,adjustable; 1.235÷30V; 0.1A; DIP8; THT | Transfer Multisort Elektronik
  • 100-mA, 30-V, low-dropout voltage regulator with power good & enable | Texas Instruments
  • LDO Voltage Regulator [Texas Instruments] LP2951ACN/NOPB LDO Voltage Regulator | Distrelec

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