Overview
The LP2951CN/NOPB is a micropower voltage regulator produced by Texas Instruments. This component is part of the LP2951-N series and is known for its high accuracy, low quiescent current, and low dropout voltage. It is particularly suited for battery-powered systems due to its efficient power management capabilities. The regulator offers a range of output voltages and features such as power good indication and logic-controlled shutdown, making it versatile for various applications.
Key Specifications
| Parameter | Description |
|---|---|
| Manufacturer | Texas Instruments |
| Part Number | LP2951CN/NOPB |
| Package | PDIP-8 |
| Input Voltage Range | 2.3 V to 30 V |
| Output Voltage Range | Programmable from 1.24 V to 29 V |
| Output Current | 100 mA |
| Quiescent Current | 75 µA (typical) |
| Dropout Voltage | Typical 40 mV at light loads and 380 mV at 100 mA |
| Operating Temperature Range | -40°C to 125°C |
| Load Regulation | 0.05% (typical) |
| Line Regulation | 0.05% (typical) |
| Temperature Coefficient | Very low output voltage temperature coefficient |
Key Features
- High accuracy output voltage
- Guaranteed 100 mA output current
- Extremely low quiescent current (75 µA typical)
- Low dropout voltage
- Extremely tight load and line regulation (0.05% typical)
- Very low temperature coefficient
- Use as regulator or reference
- Needs minimum capacitance for stability
- Current and thermal limiting
- Stable with low-ESR output capacitors (10 mΩ to 6 Ω)
- Error flag warns of output dropout
- Logic-controlled electronic shutdown
Applications
The LP2951CN/NOPB is ideal for use in battery-powered systems, portable electronics, and any application requiring a high-accuracy, low-power voltage regulator. It is also suitable for use as a low-power voltage reference due to its tight initial tolerance and low temperature coefficient.
- Battery-powered devices
- Portable electronics
- Low-power voltage references
- Embedded systems
- Industrial control systems
Q & A
- What is the input voltage range of the LP2951CN/NOPB?
The input voltage range is from 2.3 V to 30 V.
- What is the maximum output current of the LP2951CN/NOPB?
The maximum output current is 100 mA.
- What is the typical quiescent current of the LP2951CN/NOPB?
The typical quiescent current is 75 µA.
- What is the dropout voltage of the LP2951CN/NOPB?
The typical dropout voltage is 40 mV at light loads and 380 mV at 100 mA.
- What is the operating temperature range of the LP2951CN/NOPB?
The operating temperature range is from -40°C to 125°C.
- Does the LP2951CN/NOPB have an error flag feature?
Yes, it has an error flag output that warns of a low output voltage.
- Can the LP2951CN/NOPB be shut down electronically?
Yes, it has a logic-controlled electronic shutdown feature.
- Is the LP2951CN/NOPB stable with low-ESR output capacitors?
Yes, it is stable with low-ESR output capacitors (10 mΩ to 6 Ω).
- What are the available output voltage versions for the LP2951CN/NOPB?
The output voltage can be programmed from 1.24 V to 29 V, and fixed versions for 5 V, 3 V, and 3.3 V are also available.
- Is the LP2951CN/NOPB suitable for use as a voltage reference?
Yes, it is suitable due to its tight initial tolerance and low temperature coefficient.
- What is the package type of the LP2951CN/NOPB?
The package type is PDIP-8.
