MAX1857EUA47

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low-dropout (LDO) linear regulator, fixed output voltage, ultra-small package size
• Package: SOT23-8
• Essence: Provides a stable and regulated output voltage for various electronic devices
• Packaging/Quantity: Available in tape and reel packaging, quantity varies based on supplier

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage: 4.7V
• Maximum Output Current: 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• Line Regulation: 0.02%/V
• Load Regulation: 0.1%/mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX1857EUA47 has a total of 8 pins arranged as follows:

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| | --| VOUT GND|-- Pin 1 --| VIN EN |-- Pin 2 --| NC FB |-- Pin 3 --| NC NC |-- Pin 4 |___________| ```

Functional Features

• Low dropout voltage ensures efficient power conversion even with low input voltages
• Fixed output voltage eliminates the need for external voltage regulation components
• Ultra-small package size allows for space-constrained applications
• Low quiescent current minimizes power consumption during standby or idle modes
• Excellent line and load regulation provides stable output voltage under varying conditions

Advantages and Disadvantages

Advantages: - Compact size makes it suitable for portable and space-limited devices - Low dropout voltage enables efficient power conversion - Fixed output voltage simplifies circuit design - Low quiescent current reduces power consumption

Disadvantages: - Limited maximum output current may not be suitable for high-power applications - Fixed output voltage may not be adjustable for specific requirements

Working Principles

The MAX1857EUA47 is a low-dropout linear regulator that regulates the input voltage to a fixed 4.7V output voltage. It utilizes a pass transistor and feedback mechanism to maintain a stable output voltage despite variations in input voltage and load conditions. The dropout voltage is kept minimal, ensuring efficient power conversion even with low input voltages.

Detailed Application Field Plans

The MAX1857EUA47 is commonly used in various electronic devices that require a stable and regulated 4.7V power supply. Some typical application fields include:

1. Battery-powered devices: Portable audio players, handheld gaming consoles, and digital cameras often rely on the MAX1857EUA47 to provide a consistent power source.
2. IoT devices: Internet of Things (IoT) sensors and modules benefit from the compact size and low power consumption of the MAX1857EUA47.
3. Wearable devices: Smartwatches, fitness trackers, and other wearable gadgets utilize this voltage regulator to ensure reliable power delivery.
4. Embedded systems: Microcontrollers, sensors, and other embedded systems often require a regulated voltage, making the MAX1857EUA47 an ideal choice.

Detailed and Complete Alternative Models

1. MAX1856EUA47: Similar to the MAX1857EUA47 but with a different package (SOT23-5) and slightly lower maximum output current (100mA).
2. MAX1858EUA47: Offers a higher maximum output current of 200mA while maintaining the same package size and fixed output voltage.
3. MAX1859EUA47: Provides a fixed 4.7V output voltage in a different package (SOT23-6) and offers a maximum output current of 300mA.

These alternative models offer similar functionality to the MAX1857EUA47 but may have variations in package size, maximum output current, or pin configuration.