MAX17557ATP+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-Efficiency Step-Down Converter
• Package: 20-TQFN-EP (4x4)
• Essence: The MAX17557ATP+T is a high-efficiency, synchronous step-down converter designed for power management applications.
• Packaging/Quantity: The MAX17557ATP+T is available in a 20-TQFN-EP package and is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 4.5V to 60V
• Output Voltage Range: 0.9V to 0.95 x VIN
• Maximum Output Current: 3A
• Switching Frequency: 100kHz to 2.2MHz
• Efficiency: Up to 92%
• Operating Temperature Range: -40°C to +125°C

Detailed Pin Configuration

The MAX17557ATP+T has the following pin configuration:

1. VIN: Input voltage pin
2. PGND: Power ground pin
3. SW: Switching node pin
4. LX: Inductor connection pin
5. FB: Feedback voltage pin
6. EN: Enable pin
7. SS/TR: Soft-start/Tracking pin
8. VCC: Supply voltage pin
9. AGND: Analog ground pin
10. PG: Power good indicator pin

Functional Features

• High efficiency over a wide input voltage range
• Adjustable output voltage
• Integrated power MOSFETs
• Programmable soft-start
• Overcurrent and overtemperature protection
• Power good indicator

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power dissipation - Wide input voltage range allows for versatile applications - Integrated power MOSFETs simplify the design and reduce external component count - Programmable soft-start feature prevents inrush current - Overcurrent and overtemperature protection ensure safe operation - Power good indicator provides system status feedback

Disadvantages: - Limited maximum output current of 3A - Relatively small package size may limit heat dissipation capabilities in high-power applications

Working Principles

The MAX17557ATP+T is a synchronous step-down converter that uses a pulse-width modulation (PWM) control scheme to regulate the output voltage. It operates by switching the integrated power MOSFETs at a high frequency, converting the input voltage to a lower output voltage with high efficiency. The feedback voltage pin (FB) is used to set the desired output voltage, which can be adjusted within a specified range. The enable pin (EN) allows for easy on/off control of the converter.

Detailed Application Field Plans

The MAX17557ATP+T is suitable for various power management applications, including but not limited to:

1. Industrial automation systems
2. Telecommunications equipment
3. Automotive electronics
4. Distributed power systems
5. Battery-powered devices
6. LED lighting systems

Detailed and Complete Alternative Models

1. MAX17556ATP+T: Similar specifications and features, but with a lower maximum output current of 2A.
2. MAX17558ATP+T: Similar specifications and features, but with a higher maximum output current of 4A.
3. MAX17559ATP+T: Similar specifications and features, but with a higher maximum output current of 5A.

These alternative models provide options with varying output current capabilities to suit different application requirements.

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