LM2747MTC/NOPB

Product Overview

Category: Integrated Circuit (IC)

Use: Power Management

Characteristics: - High efficiency - Wide input voltage range - Adjustable output voltage - Low power consumption - Compact size

Package: TSSOP-16

Essence: The LM2747MTC/NOPB is a power management IC designed for efficient voltage regulation in various electronic devices.

Packaging/Quantity: The LM2747MTC/NOPB is typically sold in reels containing 2500 units.

Specifications

• Input Voltage Range: 4.5V to 36V
• Output Voltage Range: 1.23V to 34V
• Maximum Output Current: 3A
• Switching Frequency: 550kHz
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The LM2747MTC/NOPB features a TSSOP-16 package with the following pin configuration:

1. VIN: Input voltage pin
2. GND: Ground pin
3. FB: Feedback pin
4. EN: Enable pin
5. SS/TR: Soft-start/Tracking pin
6. AGND: Analog ground pin
7. COMP: Compensation pin
8. VCC: Supply voltage pin
9. PGND: Power ground pin
10. SW: Switch node pin
11. BST: Boost pin
12. SS/TR: Soft-start/Tracking pin
13. AGND: Analog ground pin
14. COMP: Compensation pin
15. VCC: Supply voltage pin
16. PGND: Power ground pin

Functional Features

• Wide input voltage range allows for versatile applications.
• High efficiency ensures minimal power loss during voltage conversion.
• Adjustable output voltage provides flexibility for different device requirements.
• Low power consumption contributes to energy efficiency.
• Compact size enables integration into space-constrained designs.

Advantages and Disadvantages

Advantages: - High efficiency leads to reduced power consumption. - Wide input voltage range accommodates various power sources. - Adjustable output voltage allows for customization. - Compact size facilitates integration into small devices.

Disadvantages: - Limited maximum output current may not be suitable for high-power applications. - Higher cost compared to some alternative models.

Working Principles

The LM2747MTC/NOPB operates as a step-down (buck) switching regulator. It utilizes a pulse-width modulation (PWM) control scheme to regulate the output voltage. The input voltage is converted to a regulated lower output voltage by controlling the duty cycle of the internal power switch. This allows for efficient power transfer while minimizing power loss.

Detailed Application Field Plans

The LM2747MTC/NOPB finds applications in various fields, including but not limited to: 1. Consumer electronics 2. Industrial automation 3. Automotive systems 4. Telecommunications 5. Power supplies

Detailed and Complete Alternative Models

1. LM2596S-ADJ: Similar functionality with adjustable output voltage, but lower maximum output current.
2. LM317T: Linear regulator with adjustable output voltage, but lower efficiency compared to switching regulators.
3. TPS5430: Step-down switching regulator with higher maximum output current, but larger package size.

These alternative models offer different trade-offs in terms of specifications, performance, and cost, allowing users to choose based on their specific requirements.

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