Overview
The LP2950CDTX-5.0/NOPB is a micropower voltage regulator produced by Texas Instruments. It is part of the LP2950-N series, known for its high accuracy output voltage, low quiescent current, and low dropout voltage. This regulator is ideal for use in battery-powered systems due to its minimal power consumption and robust performance characteristics.
The device features a fixed 5-V output voltage and is available in various packages, including the TO-92 and TO-252 packages. It is designed to provide stable output voltage with minimal load and line regulation, making it suitable for a wide range of applications requiring precise voltage regulation.
Key Specifications
| Parameter | Typical Value | Minimum Value | Maximum Value |
|---|---|---|---|
| Output Voltage | 5 V | 4.95 V | 5.05 V |
| Output Current | 100 mA | - | - |
| Quiescent Current | 75 µA | - | - |
| Dropout Voltage | 40 mV (light loads), 380 mV (100 mA) | - | - |
| Line Regulation | 0.03% to 0.2% | 0.03% | 0.2% |
| Load Regulation | 0.04% to 0.2% | 0.04% | 0.2% |
| Output Voltage Temperature Coefficient | 20 to 120 ppm/°C | 20 ppm/°C | 120 ppm/°C |
| Operating Temperature Range | -40°C to 125°C | -40°C | 125°C |
| Package Options | TO-92, TO-252 | - | - |
Key Features
- High accuracy output voltage with a typical tolerance of 0.5%.
- Low quiescent current of 75 µA, extending battery life in portable applications.
- Low dropout voltage, typically 40 mV at light loads and 380 mV at 100 mA.
- Very tight load and line regulation, ensuring stable output voltage under varying conditions.
- Internal protection circuitry including foldback current limit and thermal shutdown.
- Minimum capacitance required for stability, and stable operation with low-ESR output capacitors.
- Available in fixed 5-V, 3-V, and 3.3-V versions, with the option to program the output voltage from 1.24 V to 29 V using external resistors (LP2951-N versions only).
- Logic-compatible shutdown input and error flag output for advanced system control (LP2951-N versions only).
Applications
- Battery-powered systems where low power consumption and high accuracy are critical.
- High-efficiency linear regulators in various electronic devices.
- Regulators with undervoltage shutdown to protect against low input voltage conditions.
- Low dropout battery-powered regulators for applications requiring minimal voltage drop.
- Snap-ON/Snap-OFF regulators for applications needing quick power cycling.
Q & A
- What is the typical output voltage of the LP2950CDTX-5.0/NOPB?
The typical output voltage is 5 V.
- What is the quiescent current of the LP2950CDTX-5.0/NOPB?
The quiescent current is typically 75 µA.
- What are the package options available for the LP2950CDTX-5.0/NOPB?
The device is available in TO-92 and TO-252 packages.
- What is the dropout voltage of the LP2950CDTX-5.0/NOPB?
The dropout voltage is typically 40 mV at light loads and 380 mV at 100 mA.
- Does the LP2950CDTX-5.0/NOPB have internal protection circuitry?
- Can the output voltage of the LP2950CDTX-5.0/NOPB be programmed?
No, the LP2950CDTX-5.0/NOPB has a fixed 5-V output. However, the LP2951-N versions can be programmed from 1.24 V to 29 V using external resistors.
- What is the operating temperature range of the LP2950CDTX-5.0/NOPB?
The operating temperature range is -40°C to 125°C.
- Is the LP2950CDTX-5.0/NOPB suitable for battery-powered systems?
- Does the LP2950CDTX-5.0/NOPB require a minimum capacitance for stability?
- What are some common applications of the LP2950CDTX-5.0/NOPB?
