LP2951CSD Part Information

Details for LP2951CSD 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 LP2950N/LP2951-N 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% typ.), extremely good load and line regulation (.05% typ.) 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 8lead 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
Output Current 100mA
Dropout Voltage Vdo 380mV
LDO Regulator Case Style WSON
No. of Pins 8Pins
Operating Temperature Min -40°C
Operating Temperature Max 125°C
Product Range -
Automotive Qualification Standard -
RoHS Phthalates Compliant Yes
MSL MSL 3 - 168 hours
SVHC No SVHC (27-Jun-2018)
IC Generic Number 2951
No. of Outputs 1Outputs
Output Voltage Adjustable Range 1.24V to 29V
Output Voltage Max 29V
Output Voltage Min 1.24V
Termination Type Surface Mount Device
Voltage Regulator Type LDO Adjustable Positive
RoHS Compliant

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