LM2791LD-H/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 limit

Package: SOT-23-5

Essence: The LM2791LD-H/NOPB is a voltage regulator IC that provides a stable output voltage for various electronic devices.

Packaging/Quantity: Available in tape and reel packaging with 3000 units per reel.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 1.2V to 3.3V
• Dropout Voltage: 200mV at 150mA
• Output Current: Up to 150mA
• Quiescent Current: 75µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2791LD-H/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for adjusting the output voltage
4. EN: Enable pin for turning the regulator on/off
5. VOUT: Output voltage pin

Functional Features

• Low dropout voltage ensures efficient power conversion even with low input voltages.
• High output current capability allows the IC to power a wide range of electronic devices.
• Adjustable output voltage enables customization according to specific requirements.
• Thermal shutdown protection prevents damage due to excessive heat.
• Short-circuit current limit protects the IC and connected devices from overcurrent conditions.

Advantages and Disadvantages

Advantages: - Wide input voltage range makes it suitable for various applications. - Small package size (SOT-23-5) allows for space-saving designs. - Low quiescent current minimizes power consumption. - Excellent line and load regulation ensures stable output voltage.

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

Working Principles

The LM2791LD-H/NOPB is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB pin) with a reference voltage to adjust the pass transistor's conduction, maintaining a stable output voltage. The enable pin (EN) controls the regulator's on/off state.

Detailed Application Field Plans

The LM2791LD-H/NOPB is commonly used in various battery-powered electronic devices, such as: - Mobile phones - Portable media players - Digital cameras - Handheld gaming consoles

Its low dropout voltage, adjustable output voltage, and thermal shutdown protection make it ideal for applications where a stable power supply is crucial.

Detailed and Complete Alternative Models

Some alternative models to the LM2791LD-H/NOPB include: - LM1117-3.3 - LT1763-3.3 - MCP1702-3.3

These alternatives offer similar functionality and can be considered based on specific application requirements.

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