LP2995MRX

Product Overview

Category: Integrated Circuit (IC)

Use: LP2995MRX is a low-dropout voltage regulator designed for use in various electronic applications. It provides a stable output voltage with low power dissipation, making it suitable for battery-powered devices.

Characteristics: - Low dropout voltage - High output voltage accuracy - Low quiescent current - Thermal shutdown protection - Short-circuit current limit

Package: LP2995MRX is available in a small outline package (SOP) with 8 pins.

Essence: LP2995MRX is an essential component in electronic circuits that require a regulated power supply with minimal voltage drop.

Packaging/Quantity: LP2995MRX is typically sold in reels or tubes containing a specified quantity of units, depending on the manufacturer's packaging standards.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 13.8V
• Dropout Voltage: 300mV at 250mA
• Quiescent Current: 75µA
• Output Current: Up to 250mA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

LP2995MRX features the following pin configuration:

1. GND (Ground): Connected to the ground reference of the circuit.
2. IN (Input): Connects to the input voltage source.
3. EN (Enable): Controls the enable/disable function of the regulator.
4. BYP (Bypass): Connects to an external capacitor for stability and noise reduction.
5. VOUT (Output): Provides the regulated output voltage.
6. FB (Feedback): Connects to an external resistor divider network to set the output voltage.
7. NC (No Connection): This pin is not internally connected and should be left unconnected.
8. VREF (Reference Voltage): Provides a stable reference voltage for internal circuitry.

Functional Features

• Low dropout voltage ensures efficient regulation even with small input-output differentials.
• High output voltage accuracy guarantees precise voltage regulation for sensitive electronic components.
• Low quiescent current minimizes power consumption, making it suitable for battery-powered devices.
• Thermal shutdown protection prevents the IC from overheating under excessive operating conditions.
• Short-circuit current limit protects the regulator and the connected circuitry from damage in case of a short circuit.

Advantages and Disadvantages

Advantages: - Reliable voltage regulation with low dropout voltage - High output voltage accuracy - Low power consumption - Built-in thermal shutdown protection - Short-circuit current limit for added safety

Disadvantages: - Limited output current capacity (up to 250mA) - Requires external resistor divider network for setting the output voltage

Working Principles

LP2995MRX operates based on the principle of regulating the output voltage by maintaining a constant voltage difference between the input and output terminals. It utilizes a feedback mechanism through an external resistor divider network to adjust the output voltage according to the desired value. The internal circuitry continuously monitors the output voltage and adjusts the pass transistor accordingly to maintain the set voltage level.

Detailed Application Field Plans

LP2995MRX finds applications in various electronic devices and systems, including but not limited to: - Portable consumer electronics (e.g., smartphones, tablets, portable media players) - Battery-powered devices (e.g., wireless sensors, remote controls) - Automotive electronics (e.g., infotainment systems, navigation devices) - Industrial control systems - Medical equipment - Communication devices

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and pin configuration.
2. LT1763: Offers higher output current capability and lower dropout voltage.
3. TPS7A4700: Provides ultra-low noise performance for sensitive applications.

These alternative models can be considered based on specific requirements and design constraints.

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