Overview
The LP2951ACMM-3.3/NOPB is a low-dropout voltage regulator produced by Texas Instruments. This component is part of the LP2951 series, known for its high accuracy, low quiescent current, and tight load and line regulation. It is designed to provide a stable output voltage of 3.3V and is suitable for a wide range of applications, particularly in battery-powered systems and other low-power devices.
Key Specifications
| Specification | Value |
|---|---|
| Brand | Texas Instruments |
| Maximum Output Current | 100 mA |
| Regulator Type | Low Dropout Voltage |
| Output Voltage | 3.3 V |
| Number of Outputs | 1 |
| Line Regulation | 0.1 % |
| Accuracy | ±0.5% |
| Load Regulation | 0.1 % |
| Mounting Type | Surface Mount |
| Polarity | Positive |
| Package Type | MSOP (or VSSOP for some versions) |
| Pin Count | 8 |
| Reference Voltage | 1.25 V |
| Output Type | Fixed |
| Dimensions | 3 x 3 x 0.86 mm |
| Minimum Operating Temperature | -40 °C |
| Maximum Operating Temperature | +125 °C |
| Maximum Input Voltage | 30 V |
| Dropout Voltage (typical) | 0.38 V |
| Quiescent Current (typical) | 75 µA |
Key Features
- High accuracy output voltage with ±0.5% accuracy
- Ensured 100-mA output current
- Extremely low quiescent current (75 µA typical)
- Low dropout voltage (typical 0.38 V at 100 mA)
- Tight load and line regulation (0.1% each)
- Very low temperature coefficient
- Can be used as a 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 warns of output dropout (LP2951-N versions)
- Logic-controlled electronic shutdown (LP2951-N versions)
- Output programmable from 1.24 V to 29 V (LP2951-N versions)
Applications
- Battery-powered systems
- High-efficiency linear regulators
- Regulators with undervoltage shutdown
- Low dropout battery-powered regulators
- Snap-ON/Snap-OFF regulators
- General-purpose voltage regulation in low-power devices
Q & A
- What is the output voltage of the LP2951ACMM-3.3/NOPB?
The output voltage is 3.3 V.
- What is the maximum output current of the LP2951ACMM-3.3/NOPB?
The maximum output current is 100 mA.
- What is the typical quiescent current of the LP2951ACMM-3.3/NOPB?
The typical quiescent current is 75 µA.
- What is the dropout voltage of the LP2951ACMM-3.3/NOPB?
The typical dropout voltage is 0.38 V at 100 mA.
- What is the operating temperature range of the LP2951ACMM-3.3/NOPB?
The operating temperature range is -40 °C to +125 °C.
- What package types are available for the LP2951ACMM-3.3/NOPB?
The component is available in MSOP (or VSSOP for some versions) packages.
- Does the LP2951ACMM-3.3/NOPB have an error flag feature?
Yes, the LP2951-N versions have an error flag that warns of output dropout.
- Can the output voltage of the LP2951ACMM-3.3/NOPB be programmed?
Yes, the output voltage can be programmed from 1.24 V to 29 V in LP2951-N versions.
- What is the maximum input voltage for the LP2951ACMM-3.3/NOPB?
The maximum input voltage is 30 V.
- Is the LP2951ACMM-3.3/NOPB suitable for battery-powered systems?
Yes, it is ideally suited for use in battery-powered systems due to its low quiescent current and low dropout voltage.
