MAX1921EUT15+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: High Efficiency, Low Quiescent Current, Small Package Size
• Package: SOT23-6
• Essence: Step-Down DC-DC Converter
• Packaging/Quantity: Tape and Reel, 3000 pieces per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage: 1.5V
• Maximum Output Current: 500mA
• Switching Frequency: 1MHz
• Quiescent Current: 25µA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1921EUT15+T has a total of six pins:

1. VIN: Input voltage pin.
2. GND: Ground reference pin.
3. FB: Feedback pin for setting the output voltage.
4. EN: Enable pin for turning the device on/off.
5. SW: Switching node pin.
6. LX: Inductor connection pin.

Functional Features

• High efficiency conversion from input to output voltage.
• Low quiescent current, reducing power consumption during standby.
• Small package size allows for space-constrained applications.
• Built-in overcurrent and thermal protection mechanisms.

Advantages and Disadvantages

Advantages: - High efficiency results in less power dissipation. - Low quiescent current extends battery life. - Small package size enables compact designs. - Overcurrent and thermal protection enhance reliability.

Disadvantages: - Limited maximum output current of 500mA. - Input voltage range restricted to 2.5V to 5.5V.

Working Principles

The MAX1921EUT15+T is a step-down DC-DC converter that efficiently converts a higher input voltage to a lower output voltage. It utilizes a high-frequency switching technique to minimize power losses during conversion. The device operates by controlling the duty cycle of the internal switch, allowing it to regulate the output voltage according to the feedback received from the FB pin.

Detailed Application Field Plans

The MAX1921EUT15+T is commonly used in various applications, including but not limited to:

1. Battery-powered devices: Portable electronics, handheld instruments, and wireless communication devices.
2. IoT (Internet of Things) devices: Sensors, smart home devices, and wearable technology.
3. Automotive electronics: Infotainment systems, navigation units, and advanced driver-assistance systems.
4. Industrial equipment: Control systems, motor drives, and power supplies.

Detailed and Complete Alternative Models

1. MAX1921EUT18+T: Similar to MAX1921EUT15+T, but with an output voltage of 1.8V.
2. MAX1921EUT33+T: Similar to MAX1921EUT15+T, but with an output voltage of 3.3V.
3. MAX1921EUT50+T: Similar to MAX1921EUT15+T, but with an output voltage of 5.0V.

These alternative models provide flexibility in choosing the desired output voltage for specific applications.

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