LP2998MA/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Adjustable output voltage - Overcurrent protection - Thermal shutdown protection

Package: SOP-8 (Small Outline Package)

Essence: The LP2998MA/NOPB is a voltage regulator IC that provides a stable and regulated output voltage for various electronic devices.

Packaging/Quantity: The LP2998MA/NOPB is typically sold in reels containing 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 7V
• Output Voltage Range: 1.25V to 5.5V
• Dropout Voltage: 300mV at 500mA
• Maximum Output Current: 1A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LP2998MA/NOPB has the following pin configuration:

1. EN (Enable): Enable input pin for turning the regulator on or off.
2. GND (Ground): Ground reference pin.
3. FB (Feedback): Feedback pin for adjusting the output voltage.
4. VOUT (Output Voltage): Output voltage pin.
5. VIN (Input Voltage): Input voltage pin.
6. NC (No Connection): No connection pin.
7. NC (No Connection): No connection pin.
8. VREF (Reference Voltage): Reference voltage pin.

Functional Features

• High Efficiency: The LP2998MA/NOPB offers high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a low dropout voltage of 300mV at 500mA, the regulator can maintain a stable output even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The feedback pin allows for easy adjustment of the output voltage within the specified range.
• Overcurrent Protection: The IC incorporates overcurrent protection, safeguarding the connected circuitry from excessive current flow.
• Thermal Shutdown Protection: In case of excessive temperature rise, the thermal shutdown feature activates, preventing damage to the IC.

Advantages and Disadvantages

Advantages: - High efficiency ensures minimal power loss. - Adjustable output voltage provides flexibility in various applications. - Overcurrent and thermal shutdown protection enhance reliability and safety.

Disadvantages: - Limited maximum output current of 1A may not be suitable for high-power applications. - Requires external components for proper operation.

Working Principles

The LP2998MA/NOPB operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB pin) with a reference voltage (VREF pin). By adjusting the resistance connected to the FB pin, the output voltage can be set within the specified range. The internal circuitry of the IC ensures stable regulation even under varying input voltages and load conditions.

Detailed Application Field Plans

The LP2998MA/NOPB finds applications in various electronic devices that require a stable and regulated power supply. Some common application fields include:

1. Consumer Electronics: Used in smartphones, tablets, portable media players, and other battery-powered devices to regulate the voltage supplied to the internal components.
2. Automotive Electronics: Employed in automotive systems such as infotainment systems, navigation units, and lighting control modules to ensure a stable power supply.
3. Industrial Control Systems: Integrated into industrial control systems, PLCs (Programmable Logic Controllers), and motor control circuits to provide reliable voltage regulation.
4. Telecommunications: Utilized in telecom equipment, routers, and switches to maintain a consistent voltage level for optimal performance.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with similar features and pin configuration.
2. LT1083: High-current linear voltage regulator capable of delivering up to 7.5A output current.
3. LM1117: Low dropout voltage regulator suitable for low-power applications.
4. LM7805: Fixed-output voltage regulator providing a stable 5V output.

These alternative models offer different specifications and capabilities, allowing users to choose the most suitable option based on their specific requirements.

Word count: 529 words