MAX1945SEUI+T

Product Overview

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

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: 0.8V to 3.6V
• Maximum Output Current: 1A
• Quiescent Current: 40µA
• Switching Frequency: 1.2MHz
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1945SEUI+T IC has the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Pin
4. EN: Enable Pin
5. SW: Switching Node
6. PGND: Power Ground
7. LX: Inductor Connection
8. VOUT: Output Voltage

Functional Features

• High Efficiency: The MAX1945SEUI+T offers high efficiency power conversion, minimizing energy loss.
• Low Power Consumption: With a quiescent current of only 40µA, it ensures minimal power consumption during standby or low-load conditions.
• Wide Input and Output Voltage Range: It supports a wide input voltage range of 2.7V to 5.5V and an output voltage range of 0.8V to 3.6V, making it versatile for various applications.
• Fast Transient Response: The IC provides a fast transient response, ensuring stable output voltage even during sudden load changes.

Advantages and Disadvantages

Advantages: - High efficiency power conversion - Low power consumption during standby - Wide input and output voltage range - Fast transient response

Disadvantages: - Limited maximum output current (1A)

Working Principles

The MAX1945SEUI+T is a voltage regulator IC that utilizes a synchronous buck converter topology. It operates by converting the input voltage to a regulated output voltage with high efficiency. The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switches to maintain a stable output. The enable pin (EN) controls the operation of the IC, allowing for easy on/off control.

Detailed Application Field Plans

The MAX1945SEUI+T is commonly used in various applications, including but not limited to:

1. Portable Electronic Devices: It provides efficient power management for battery-powered devices such as smartphones, tablets, and portable media players.
2. IoT (Internet of Things) Devices: With its low power consumption and wide input voltage range, it is suitable for powering IoT devices that require long battery life and flexibility.
3. Industrial Equipment: The IC can be used in industrial equipment that requires stable and efficient power supply, such as sensors, actuators, and control systems.

Detailed and Complete Alternative Models

1. MAX1946SEUI+T: Similar to MAX1945SEUI+T, but with a higher maximum output current of 2A.
2. MAX1947SEUI+T: A variant with an adjustable output voltage feature, allowing for more flexibility in voltage selection.
3. MAX1948SEUI+T: This model offers a higher switching frequency of 2.4MHz, enabling smaller external components and reducing board space requirements.

(Note: These alternative models are provided as examples and may not cover all available options.)

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