MAX1748EUE+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High-Efficiency Step-Down DC-DC Converter
• Package: 16-TSSOP (Thin Shrink Small Outline Package)
• Essence: Voltage Regulator
• Packaging/Quantity: Tape & Reel, 2500 units per reel

Specifications

• Input Voltage Range: 4.5V to 28V
• Output Voltage Range: 0.8V to 90% of VIN
• Maximum Output Current: 2A
• Switching Frequency: 500kHz
• Efficiency: Up to 95%
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1748EUE+T has a total of 16 pins. The pin configuration is as follows:

1. EN (Enable): Enable input for turning the device on/off.
2. FB (Feedback): Feedback input for regulating the output voltage.
3. COMP (Compensation): Compensation pin for stability control.
4. SS/TRK (Soft-Start/Tracking): Soft-start and tracking control input.
5. PGND (Power Ground): Ground connection for power stage.
6. LX (Switch Node): Switching node connection for the inductor.
7. SW (Switch): Switching node connection for the inductor.
8. VCC (Supply Voltage): Supply voltage input for internal circuitry.
9. AGND (Analog Ground): Ground connection for analog circuitry.
10. PG (Power Good): Output indicating the presence of a valid output voltage.
11. BOOT (Bootstrap): Bootstrap capacitor connection for high-side MOSFET driver.
12. BST (Boost): Boost capacitor connection for high-side MOSFET driver.
13. PGND (Power Ground): Ground connection for power stage.
14. LX (Switch Node): Switching node connection for the inductor.
15. SW (Switch): Switching node connection for the inductor.
16. VCC (Supply Voltage): Supply voltage input for internal circuitry.

Functional Features

• High-efficiency step-down DC-DC converter.
• Wide input voltage range allows for versatile applications.
• Adjustable output voltage provides flexibility.
• Integrated power MOSFETs simplify the design.
• Soft-start and tracking control for smooth operation.
• Power good output for system monitoring.

Advantages and Disadvantages

Advantages: - High efficiency results in reduced power consumption. - Wide input voltage range accommodates various power sources. - Compact package size saves board space. - Integrated power MOSFETs simplify the design process. - Soft-start feature prevents excessive inrush current.

Disadvantages: - Limited maximum output current of 2A. - Operating temperature range may not be suitable for extreme environments. - Requires external components for proper operation.

Working Principles

The MAX1748EUE+T is a high-efficiency step-down DC-DC converter that converts a higher input voltage to a lower output voltage. It utilizes pulse-width modulation (PWM) to regulate the output voltage. The device operates by switching the power MOSFETs on and off at a high frequency, which controls the energy transfer from the input to the output. The feedback loop continuously monitors the output voltage and adjusts the duty cycle of the switches to maintain a stable output voltage.

Detailed Application Field Plans

The MAX1748EUE+T is commonly used in various applications, including but not limited to:

1. Battery-powered devices: Provides efficient power conversion for portable electronics such as smartphones, tablets, and wearable devices.
2. Industrial equipment: Suitable for powering sensors, actuators, and control systems in industrial automation.
3. Automotive electronics: Used in automotive applications such as infotainment systems, lighting control, and power management.
4. Telecommunications: Enables efficient power conversion for telecom infrastructure equipment like routers, switches, and base stations.
5. Home appliances: Can be utilized in household devices such as smart thermostats, security systems, and home automation.

Detailed and Complete Alternative Models

1. MAX1749EUE+T: Similar to MAX1748EUE+T but with a higher maximum output current of 3A.
2. MAX1750EUE+T: Step-down DC-DC converter with an adjustable output voltage range and higher efficiency.
3. MAX1751EUE+T: Integrated circuit with a wide input voltage range and built-in protection features.
4. MAX1752EUE+T: High-efficiency step-down converter with a lower operating temperature range.
5. MAX1753EUE+T: Compact IC with integrated power MOSFETs and a higher switching frequency.

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

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