Overview
The LP2951ACMX-3.3/NOPB is a micropower voltage regulator produced by Texas Instruments. This component is part of the LP2951-N series, which is designed for low-dropout voltage regulation with high accuracy and low quiescent current. It is particularly suited for battery-powered systems due to its minimal quiescent current, which prolongs battery life. The regulator offers various output voltage versions, including 5-V, 3-V, and 3.3-V, and can be programmed for output voltages from 1.24 V to 29 V using external resistors.
Key Specifications
| Parameter | Description |
|---|---|
| Input Voltage Range | 2.3 V to 30 V |
| Output Voltage | Fixed: 3.3 V, Adjustable: 1.24 V to 29 V |
| Output Current | 100 mA |
| Quiescent Current | Typical 75 µA, Maximum 120 µA |
| Dropout Voltage | Typical 40 mV at light loads, 380 mV at 100 mA |
| Operating Temperature Range | -40°C to 125°C |
| Package Type | SOIC-8 |
| Protection Features | Over Current, Over Temperature, Short Circuit |
| Control Features | Enable, Error Flag, Logic-Controlled Electronic Shutdown |
Key Features
- High Accuracy Output Voltage with tight initial tolerance (0.5% typical)
- Extremely low quiescent current (75 µA typical) and low dropout voltage
- Extremely tight load and line regulation (0.05% typical)
- Very low temperature coefficient
- Use as regulator or reference
- Minimum capacitance required for stability
- Current and thermal limiting
- Stable with low-ESR output capacitors (10 mΩ to 6 Ω)
- Error flag output warns of output dropout
- Logic-controlled electronic shutdown
- Output programmable from 1.24 V to 29 V
Applications
- High-efficiency linear regulator
- Regulator with undervoltage shutdown
- Low dropout battery-powered regulator
- Snap-ON/Snap-OFF regulator
- Battery-powered systems requiring low quiescent current
Q & A
- What is the input voltage range of the LP2951ACMX-3.3/NOPB?
The input voltage range is from 2.3 V to 30 V.
- What are the available output voltage versions for the LP2951-N series?
The available output voltage versions are 5 V, 3 V, and 3.3 V, with the option to program the output from 1.24 V to 29 V using external resistors.
- What is the maximum output current of the LP2951ACMX-3.3/NOPB?
The maximum output current is 100 mA.
- What is the typical quiescent current of the LP2951ACMX-3.3/NOPB?
The typical quiescent current is 75 µA.
- What are the protection features of the LP2951ACMX-3.3/NOPB?
The protection features include over current, over temperature, and short circuit protection.
- What is the operating temperature range of the LP2951ACMX-3.3/NOPB?
The operating temperature range is from -40°C to 125°C.
- What package type is the LP2951ACMX-3.3/NOPB available in?
The component is available in an SOIC-8 package.
- Does the LP2951ACMX-3.3/NOPB have an error flag feature?
Yes, it has an error flag output that warns of output dropout.
- Can the LP2951ACMX-3.3/NOPB be shut down electronically?
Yes, it features logic-controlled electronic shutdown.
- What type of capacitors are recommended for stability with the LP2951ACMX-3.3/NOPB?
The component is stable with low-ESR output capacitors (10 mΩ to 6 Ω).
