LM2724AM/NOPB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current, Wide Input Voltage Range
• Package: SOIC-8
• Essence: Step-Down Switching Regulator
• Packaging/Quantity: Tape and Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 36V
• Output Voltage Range: 1.23V to 34V
• Switching Frequency: 550kHz
• Maximum Output Current: 1A
• Quiescent Current: 120µA
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2724AM/NOPB has the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin for output voltage regulation
4. EN: Enable pin for turning the regulator on/off
5. SW: Switch node connection for inductor
6. COMP: Compensation pin for loop stability
7. SS/TR: Soft-start/Tracking pin for controlling startup time and tracking
8. VOUT: Output voltage pin

Functional Features

• High efficiency up to 95%
• Low quiescent current for improved power savings
• Wide input voltage range suitable for various applications
• Adjustable output voltage through external resistors
• Overcurrent protection and thermal shutdown features

Advantages and Disadvantages

Advantages

• High efficiency leads to reduced power dissipation
• Low quiescent current extends battery life
• Wide input voltage range allows for versatile use
• Compact SOIC-8 package for space-constrained designs
• Overcurrent protection and thermal shutdown enhance reliability

Disadvantages

• Limited maximum output current of 1A
• Requires external resistors for output voltage adjustment
• Not suitable for high-power applications

Working Principles

The LM2724AM/NOPB is a step-down switching regulator that converts a higher input voltage to a lower output voltage. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage. The internal power MOSFET switch and synchronous rectifier provide high efficiency. The feedback pin (FB) compares the output voltage with a reference voltage, adjusting the duty cycle to maintain the desired output voltage.

Detailed Application Field Plans

The LM2724AM/NOPB is commonly used in various applications, including:

1. Battery-powered devices: Portable electronics, handheld instruments, and battery chargers benefit from its low quiescent current and wide input voltage range.
2. Industrial automation: Control systems, motor drives, and sensors can utilize the LM2724AM/NOPB for efficient power management.
3. Automotive electronics: On-board vehicle systems, infotainment systems, and lighting modules can benefit from its wide input voltage range and compact package.

Detailed and Complete Alternative Models

Some alternative models to the LM2724AM/NOPB include:

1. LM2576: Step-down switching regulator with higher output current capability.
2. LM2596: Buck converter with adjustable output voltage and higher switching frequency.
3. LM22672: High-efficiency synchronous buck regulator with integrated power MOSFETs.

These alternatives offer different features and specifications, allowing designers to choose the most suitable option for their specific application requirements.

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