Overview
The LP2951ACMX-3.0/NOPB is a micropower voltage regulator produced by Texas Instruments. This component is part of the LP2951-N series and is designed for use in battery-powered systems due to its very low quiescent current and low dropout voltage. It is available in an 8-pin SOIC package and is suitable for a wide range of applications requiring high accuracy and low power consumption.
Key Specifications
| Parameter | Value | Unit |
|---|---|---|
| Manufacturer | Texas Instruments | |
| Part Number | LP2951ACMX-3.0/NOPB | |
| Package | SOIC-8 | |
| Input Voltage Range | 2.3 V to 30 V | V |
| Output Voltage Range | 1.24 V to 29 V (programmable), 3 V, 3.3 V, 5 V (fixed) | V |
| Maximum Output Current | 100 mA | A |
| Quiescent Current (Typical) | 75 µA | A |
| Dropout Voltage (Typical) | 380 mV @ 100 mA | V |
| Operating Temperature Range | -40°C to 125°C | °C |
| Noise (Typical) | 160 µVrms | V |
| PSRR @ 100 kHz | 51 dB | dB |
| Thermal Resistance (θJA) | 43 °C/W | °C/W |
| RoHS Compliance | Yes |
Key Features
- High accuracy output voltage with a tight initial tolerance (0.5% typical) and very low output voltage temperature coefficient.
- Extremely low quiescent current (75 µA typical) and low dropout voltage (typical 380 mV at 100 mA).
- Ensured 100-mA output current and extremely tight load and line regulation.
- Logic-controlled electronic shutdown and error flag output that warns of output dropout.
- Output programmable from 1.24 V to 29 V with an external pair of resistors.
- Stable with low-ESR output capacitors (10 mΩ to 6 Ω).
- Current and thermal limiting for enhanced reliability.
Applications
- Battery-powered systems where low power consumption and high accuracy are crucial.
- High-efficiency linear regulators.
- Regulators with undervoltage shutdown.
- Low dropout battery-powered regulators.
- Snap-ON/Snap-OFF regulators.
Q & A
- What is the input voltage range of the LP2951ACMX-3.0/NOPB?
The input voltage range is from 2.3 V to 30 V.
- What are the available fixed output voltage options for this regulator?
The fixed output voltage options are 3 V, 3.3 V, and 5 V.
- What is the maximum output current of the LP2951ACMX-3.0/NOPB?
The maximum output current is 100 mA.
- What is the typical quiescent current of this regulator?
The typical quiescent current is 75 µA.
- What is the operating temperature range of the LP2951ACMX-3.0/NOPB?
The operating temperature range is from -40°C to 125°C.
- Does the LP2951ACMX-3.0/NOPB have a shutdown feature?
- Can the output voltage of the LP2951ACMX-3.0/NOPB be programmed?
- Is the LP2951ACMX-3.0/NOPB RoHS compliant?
- What is the typical dropout voltage of the LP2951ACMX-3.0/NOPB at 100 mA output current?
The typical dropout voltage is 380 mV at 100 mA output current.
- What type of output capacitors are recommended for stability?
Low-ESR output capacitors (10 mΩ to 6 Ω) are recommended for stability.
