MAX1841EUB

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: Low-power, high-efficiency step-up DC-DC converter
• Package: µMAX® (8-pin microMAX)
• Essence: Voltage Boosting
• Packaging/Quantity: Tape and Reel / 2500 units per reel

Specifications

• Input Voltage Range: 0.7V to 5.5V
• Output Voltage Range: 2.7V to 5.5V
• Maximum Output Current: 100mA
• Efficiency: Up to 90%
• Switching Frequency: 1.2MHz
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX1841EUB has the following pin configuration:

```

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| | --| VOUT | --| VIN | --| GND | --| FB | --| EN | --| LX | --| SHDN | |___________| ```

Functional Features

• Low input voltage operation allows usage with a wide range of power sources.
• High efficiency enables longer battery life in portable devices.
• Integrated synchronous rectifier minimizes external component count.
• Soft-start feature prevents excessive inrush current during startup.
• Overcurrent and thermal shutdown protection ensure safe operation.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows for versatile applications. - High efficiency results in reduced power consumption. - Small package size saves board space. - Integrated features minimize external components and simplify design.

Disadvantages: - Limited output current may not be suitable for high-power applications. - Higher cost compared to non-integrated solutions. - Requires careful consideration of thermal management due to small package size.

Working Principles

The MAX1841EUB is a step-up DC-DC converter that boosts the input voltage to a higher output voltage. It utilizes a high-frequency switching regulator to efficiently convert the input power. The integrated synchronous rectifier reduces power losses and improves overall efficiency. The soft-start feature gradually ramps up the output voltage, preventing excessive inrush current during startup. The device also incorporates overcurrent and thermal shutdown protection for safe operation.

Detailed Application Field Plans

The MAX1841EUB is commonly used in various applications, including:

1. Battery-powered devices: Portable electronics such as smartphones, tablets, and wearable devices benefit from the low-power and high-efficiency characteristics of the MAX1841EUB.
2. IoT (Internet of Things) devices: The wide input voltage range makes it suitable for powering sensors, wireless modules, and other IoT devices.
3. Industrial equipment: The small package size and integrated features make it ideal for space-constrained industrial applications, such as remote monitoring systems and control panels.

Detailed and Complete Alternative Models

1. MAX1840: Similar to the MAX1841EUB but with a lower maximum output current of 50mA.
2. MAX1842: Higher maximum output current of 200mA, suitable for applications requiring more power.
3. MAX1843: Adjustable output voltage version of the MAX1841EUB, allowing for greater flexibility in system design.

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