MAX1823BEUB+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Power Management
• Characteristics: Step-Up DC-DC Converter
• Package: µMAX®
• Essence: High-Efficiency, Low Quiescent Current
• Packaging/Quantity: Tape & Reel / 2500 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 3.3V to 5.5V
• Maximum Output Current: 100mA
• Switching Frequency: 1.2MHz
• Shutdown Current: <1µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX1823BEUB+T has a total of six pins arranged as follows:

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

• VOUT: Output Voltage Pin
• GND: Ground Pin
• FB: Feedback Pin
• LX: Inductor Connection Pin
• VIN: Input Voltage Pin

Functional Features

• High Efficiency: The MAX1823BEUB+T is designed to provide high efficiency in step-up voltage conversion applications.
• Low Quiescent Current: It features low quiescent current, ensuring minimal power consumption during standby or idle modes.
• Wide Input Voltage Range: The IC can accept input voltages ranging from 2.5V to 5.5V, making it suitable for various power sources.
• Adjustable Output Voltage: The output voltage can be adjusted within the range of 3.3V to 5.5V using an external resistor divider network.

Advantages and Disadvantages

Advantages: - High efficiency - Low quiescent current - Wide input voltage range - Adjustable output voltage

Disadvantages: - Limited maximum output current (100mA)

Working Principles

The MAX1823BEUB+T is a step-up DC-DC converter that utilizes a switching regulator to boost the input voltage to a higher level. It operates by controlling the duty cycle of an internal switch, which in turn controls the energy transfer from the input to the output.

When the input voltage is applied, the internal switch rapidly turns on and off at a high frequency, creating a pulsating current through the inductor (LX pin). This causes energy to be stored in the inductor during the switch-on period and released to the output during the switch-off period.

The feedback pin (FB) monitors the output voltage and adjusts the duty cycle of the internal switch to maintain a stable output voltage within the desired range.

Detailed Application Field Plans

The MAX1823BEUB+T is commonly used in various applications where step-up voltage conversion is required. Some typical application fields include:

1. Battery-Powered Devices: The IC can efficiently boost the battery voltage to power components that require higher voltages, such as LCD displays, sensors, or wireless modules.
2. Portable Electronics: It is suitable for portable electronic devices like smartphones, tablets, and portable media players, where efficient power management is crucial for extended battery life.
3. IoT Devices: The low quiescent current and wide input voltage range make it ideal for IoT devices powered by energy harvesting sources or small batteries.
4. Industrial Applications: The IC can be used in industrial control systems, automation equipment, and sensor networks that require reliable and efficient power management solutions.

Detailed and Complete Alternative Models

1. MAX1726EUK+T: Similar step-up DC-DC converter with adjustable output voltage and higher maximum output current (200mA).
2. MAX6190AESA: Step-up DC-DC converter with fixed 5V output voltage and higher maximum output current (500mA).
3. MAX1771ESA+: Integrated step-up/step-down DC-DC converter with adjustable output voltage and higher maximum output current (500mA).

These alternative models offer different features and specifications, allowing users to choose the most suitable option based on their specific requirements.

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