Overview
The Texas Instruments LP2951ACMMX-3.3/NOPB is a high-accuracy, low-dropout linear voltage regulator designed for a wide range of applications, particularly in battery-powered systems. This regulator offers a fixed output voltage of 3.3V and is known for its extremely low quiescent current, low dropout voltage, and tight load and line regulation. The LP2951ACMMX-3.3/NOPB features an error flag output for detecting low output voltage and a logic-compatible shutdown input, making it versatile and reliable for various power management needs.
Key Specifications
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP2951ACMMX-3.3/NOPB |
| Package | VSSOP-8-0.65mm |
| Output Voltage | 3.3V |
| Input Voltage Range | 2.3V to 30V |
| Output Current | 100mA |
| Quiescent Current (typ) | 75µA |
| Dropout Voltage (typ) | 380mV at 100mA |
| Load Regulation | 0.04% to 0.1% |
| Line Regulation | 0.03% to 0.2% |
| Operating Temperature | -40°C to +125°C |
| Thermal Resistance θJA | 43, 56, 118, 171°C/W |
Key Features
- High accuracy output voltage with ±2.5% accuracy
- Extremely low quiescent current of 75µA typical
- Low dropout voltage of 380mV at 100mA
- Tight load and line regulation
- Very low temperature coefficient
- Error flag output for detecting low output voltage
- Logic-controlled electronic shutdown
- Output programmable from 1.24V to 29V using external resistors
- Stable with low-ESR output capacitors (10mΩ to 6Ω)
- Current and thermal limiting
Applications
- High-efficiency linear regulators in battery-powered systems
- Regulators with undervoltage shutdown
- Low dropout battery-powered regulators
- Snap-ON/Snap-OFF regulators
- General power management in low-power devices
Q & A
- What is the output voltage of the LP2951ACMMX-3.3/NOPB?
The output voltage is fixed at 3.3V. - What is the input voltage range for this regulator?
The input voltage range is from 2.3V to 30V. - What is the maximum output current of the LP2951ACMMX-3.3/NOPB?
The maximum output current is 100mA. - What is the typical quiescent current of this regulator?
The typical quiescent current is 75µA. - Does the LP2951ACMMX-3.3/NOPB have an error flag feature?
Yes, it has an error flag output that warns of output dropout. - Can the output voltage be programmed?
Yes, the output voltage can be programmed from 1.24V to 29V using external resistors. - What is the operating temperature range of the LP2951ACMMX-3.3/NOPB?
The operating temperature range is -40°C to +125°C. - Is the LP2951ACMMX-3.3/NOPB stable with low-ESR capacitors?
Yes, it is stable with low-ESR output capacitors (10mΩ to 6Ω). - Does the regulator have current and thermal limiting features?
Yes, it includes current and thermal limiting features. - What package type is the LP2951ACMMX-3.3/NOPB available in?
The regulator is available in a VSSOP-8-0.65mm package.
