LP2951ACM/NOPB
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Texas Instruments LP2951ACM/NOPB

Manufacturer No:
LP2951ACM/NOPB
Manufacturer:
Texas Instruments
Package:
Bulk
Description:
IC REG LIN POS ADJ 100MA 8SOIC
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Payment:
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Product Introduction

Overview

The LP2951ACM/NOPB is a micropower voltage regulator produced by Texas Instruments. It is part of the LP2951-N series, known for its very low quiescent current and low dropout voltage, making it ideal for battery-powered systems. The regulator offers high accuracy output voltage, ensured 100-mA output current, and extremely tight load and line regulation. It is available in an 8-pin SOIC (D) package and operates over a wide temperature range from -40°C to 125°C.

Key Specifications

Parameter Value Unit
Input Voltage Range 2.3 V to 30 V V
Output Voltage Versions 5 V, 3 V, 3.3 V (and programmable from 1.24 V to 29 V) V
Output Current 100 mA mA
Quiescent Current 75 µA (typical) µA
Dropout Voltage 40 mV (typical at light loads), 380 mV (typical at 100 mA) mV
Load Regulation 0.05% (typical) %
Line Regulation 0.05% (typical) %
Temperature Coefficient Very low -
Operating Temperature Range -40°C to 125°C °C
Package SOIC (D) with 8 pins -

Key Features

The LP2951ACM/NOPB features several key attributes that make it a versatile and reliable choice for various applications:

  • High accuracy output voltage with a tight initial tolerance (0.5% typical).
  • Extremely low quiescent current (75 µA typical) and low dropout voltage, which helps in prolonging battery life.
  • Extremely tight load and line regulation (0.05% typical).
  • Very low temperature coefficient, making it useful as a low-power voltage reference.
  • Current and thermal limiting for protection.
  • Stable with low-ESR output capacitors (10 mΩ to 6 Ω).
  • Error flag output that warns of low output voltage, often due to falling batteries on the input.
  • Logic-controlled electronic shutdown.
  • Output programmable from 1.24 V to 29 V with external resistors.

Applications

The LP2951ACM/NOPB is suitable for a variety of applications, including:

  • High-efficiency linear regulators.
  • Regulators with undervoltage shutdown.
  • Low dropout battery-powered regulators.
  • Snap-ON/Snap-OFF regulators.
  • Battery-powered systems where low quiescent current and high accuracy are crucial.

Q & A

  1. What is the input voltage range of the LP2951ACM/NOPB?

    The input voltage range is from 2.3 V to 30 V.

  2. What are the available output voltage versions for the LP2951ACM/NOPB?

    The regulator is available in 5 V, 3 V, and 3.3 V versions, and it can also be programmed from 1.24 V to 29 V with external resistors.

  3. What is the typical quiescent current of the LP2951ACM/NOPB?

    The typical quiescent current is 75 µA.

  4. What is the dropout voltage of the LP2951ACM/NOPB?

    The dropout voltage is typically 40 mV at light loads and 380 mV at 100 mA.

  5. Does the LP2951ACM/NOPB have built-in protection features?
  6. Can the LP2951ACM/NOPB be used as a voltage reference?
  7. What is the operating temperature range of the LP2951ACM/NOPB?
  8. What package type is the LP2951ACM/NOPB available in?
  9. Does the LP2951ACM/NOPB support logic-controlled shutdown?
  10. Is the LP2951ACM/NOPB stable with low-ESR output capacitors?

Product Attributes

Output Configuration:Positive
Output Type:Adjustable (Fixed)
Number of Regulators:1
Voltage - Input (Max):30V
Voltage - Output (Min/Fixed):1.235V (5V)
Voltage - Output (Max):29V
Voltage Dropout (Max):0.6V @ 100mA
Current - Output:100mA
Current - Quiescent (Iq):120 µA
Current - Supply (Max):14 mA
PSRR:- 
Control Features:Enable
Protection Features:Over Current, Over Temperature, Short Circuit
Operating Temperature:-40°C ~ 125°C (TJ)
Mounting Type:Surface Mount
Package / Case:8-SOIC (0.154", 3.90mm Width)
Supplier Device Package:8-SOIC
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Similar Products

Part Number LP2951ACM/NOPB LP2951ACN/NOPB LP2951ACMX/NOPB LP2951CM/NOPB LP2951ACMM/NOPB
Manufacturer Texas Instruments Texas Instruments Texas Instruments Texas Instruments Texas Instruments
Product Status Active Active Active Active Active
Output Configuration Positive Positive Positive Positive Positive
Output Type Adjustable (Fixed) Adjustable (Fixed) Adjustable (Fixed) Adjustable (Fixed) Adjustable (Fixed)
Number of Regulators 1 1 1 1 1
Voltage - Input (Max) 30V 30V 30V 30V 30V
Voltage - Output (Min/Fixed) 1.235V (5V) 1.235V (5V) 1.235V (5V) 1.235V (5V) 1.235V (5V)
Voltage - Output (Max) 29V 29V 29V 29V 29V
Voltage Dropout (Max) 0.6V @ 100mA 0.6V @ 100mA 0.6V @ 100mA 0.6V @ 100mA 0.6V @ 100mA
Current - Output 100mA 100mA 100mA 100mA 100mA
Current - Quiescent (Iq) 120 µA 120 µA 120 µA 120 µA 120 µA
Current - Supply (Max) 14 mA 14 mA 14 mA 14 mA 14 mA
PSRR - - - - -
Control Features Enable Enable Enable Enable Enable
Protection Features Over Current, Over Temperature, Short Circuit Over Current, Over Temperature, Short Circuit Over Current, Over Temperature, Short Circuit Over Current, Over Temperature, Short Circuit Over Current, Over Temperature, Short Circuit
Operating Temperature -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ) -40°C ~ 125°C (TJ)
Mounting Type Surface Mount Through Hole Surface Mount Surface Mount Surface Mount
Package / Case 8-SOIC (0.154", 3.90mm Width) 8-DIP (0.300", 7.62mm) 8-SOIC (0.154", 3.90mm Width) 8-SOIC (0.154", 3.90mm Width) 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
Supplier Device Package 8-SOIC 8-PDIP 8-SOIC 8-SOIC 8-VSSOP

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