LP2997M/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - Low dropout voltage - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short-circuit current limiting - Overcurrent and overtemperature protection

Package: SOIC (Small Outline Integrated Circuit)

Essence: The LP2997M/NOPB is a high-performance voltage regulator IC that provides a regulated output voltage from an unregulated input voltage. It is designed to deliver a stable and reliable power supply for various electronic devices.

Packaging/Quantity: The LP2997M/NOPB is available in a standard SOIC package. Each package contains one IC.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 13.8V
• Dropout Voltage: 0.45V at 500mA
• Output Current: Up to 500mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LP2997M/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. VOUT: Output voltage pin
4. ADJ: Adjustable pin for setting the output voltage

Functional Features

• Low Dropout Voltage: The LP2997M/NOPB has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• High Output Current Capability: With a maximum output current of 500mA, this voltage regulator can power a wide range of electronic devices.
• Adjustable Output Voltage: The ADJ pin allows users to set the desired output voltage within the specified range.
• Thermal Shutdown Protection: The IC includes a thermal shutdown feature that protects it from overheating, ensuring safe operation.
• Short-Circuit Current Limiting: In case of a short circuit, the LP2997M/NOPB limits the current to prevent damage to the IC and connected devices.
• Overcurrent and Overtemperature Protection: The voltage regulator incorporates protection mechanisms to safeguard against excessive current and temperature.

Advantages and Disadvantages

Advantages: - High output current capability - Adjustable output voltage - Thermal shutdown protection - Short-circuit current limiting - Overcurrent and overtemperature protection

Disadvantages: - Limited input voltage range (2.5V to 16V) - Dropout voltage of 0.45V may not be suitable for applications with low input voltages

Working Principles

The LP2997M/NOPB operates by comparing the output voltage with a reference voltage. It adjusts the internal pass transistor to maintain a stable output voltage, compensating for changes in the input voltage and load conditions. The adjustable pin allows users to set the desired output voltage within the specified range.

Detailed Application Field Plans

The LP2997M/NOPB is commonly used in various electronic devices and systems, including: 1. Battery-powered devices 2. Portable audio players 3. Mobile phones 4. Digital cameras 5. Wireless communication systems 6. Automotive electronics

Detailed and Complete Alternative Models

Some alternative models to the LP2997M/NOPB include: 1. LM317: Adjustable voltage regulator with higher input voltage range 2. LT1084: Low dropout voltage regulator with higher output current capability 3. LM1117: Fixed voltage regulator with lower quiescent current

These alternative models offer different features and specifications, allowing users to choose the most suitable voltage regulator for their specific application.

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