LP5951MF-3.3/NOPB

Product Overview

Category

LP5951MF-3.3/NOPB belongs to the category of voltage regulators.

Use

This product is commonly used in electronic devices to regulate and stabilize the voltage supply.

Characteristics

• Voltage Output: 3.3V
• Package Type: SOT-23
• Essence: Low-dropout (LDO) voltage regulator
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

The LP5951MF-3.3/NOPB voltage regulator has the following specifications:

• Input Voltage Range: 2.5V to 6V
• Dropout Voltage: 200mV at 250mA
• Output Current: Up to 150mA
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.05% typical
• Quiescent Current: 75µA typical
• Thermal Shutdown Protection
• Short Circuit Current Limiting

Pin Configuration

The LP5951MF-3.3/NOPB has a SOT-23 package with the following pin configuration:

```

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| | | 1 2 | | | | 3 | |___________| ```

Pin 1: VIN - Input Voltage Pin 2: GND - Ground Pin 3: VOUT - Output Voltage

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output differentials.
• Excellent line and load regulation ensures stable output voltage under varying conditions.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Short circuit current limiting protects the regulator and connected components from damage during faults.

Advantages and Disadvantages

Advantages

• Compact SOT-23 package allows for space-saving integration in electronic devices.
• Low quiescent current minimizes power consumption.
• Wide input voltage range provides flexibility in various applications.

Disadvantages

• Limited output current capability restricts usage in high-power applications.
• Dropout voltage of 200mV may not be suitable for ultra-low voltage systems.

Working Principles

The LP5951MF-3.3/NOPB is a low-dropout voltage regulator that maintains a stable output voltage despite fluctuations in the input voltage. It achieves this by using a pass transistor to regulate the voltage across a series resistor. The feedback mechanism continuously adjusts the pass transistor to maintain the desired output voltage.

Detailed Application Field Plans

The LP5951MF-3.3/NOPB finds application in various electronic devices, including but not limited to: - Battery-powered devices - Portable audio players - Mobile phones - Wearable devices - IoT modules

Detailed and Complete Alternative Models

Some alternative models to the LP5951MF-3.3/NOPB voltage regulator include: - LM1117-3.3 - MCP1700-3302E/TO - LT1763-3.3

These alternatives offer similar functionality and specifications, providing options for different design requirements.

In conclusion, the LP5951MF-3.3/NOPB is a voltage regulator with a compact SOT-23 package, low dropout voltage, and excellent line and load regulation. While it has limitations in terms of output current and dropout voltage, it offers advantages such as low quiescent current and wide input voltage range. Its working principle involves maintaining a stable output voltage through a feedback mechanism. This regulator finds application in various electronic devices and has alternative models available in the market.