MAX889SESA+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuit (IC)

Use: Voltage Regulator

Characteristics: - High efficiency - Low dropout voltage - Small package size - Low quiescent current

Package: SOIC-8

Essence: The MAX889SESA+ is a voltage regulator IC designed to provide a stable output voltage from an input voltage source.

Packaging/Quantity: The MAX889SESA+ is available in tape and reel packaging, with 2500 units per reel.

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.2V to 5.5V
• Maximum Output Current: 500mA
• Dropout Voltage: 120mV at 500mA
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX889SESA+ has the following pin configuration:

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| | --| VOUT IN |-- Pin 1: Input Voltage (VIN) --| GND EN |-- Pin 2: Enable (EN) --| FB GND |-- Pin 3: Ground (GND) --| NC VOUT |-- Pin 4: Output Voltage (VOUT) |___________| ```

Functional Features

• High Efficiency: The MAX889SESA+ utilizes advanced circuitry to achieve high efficiency, minimizing power loss during voltage regulation.
• Low Dropout Voltage: With a dropout voltage of only 120mV at 500mA, the MAX889SESA+ can maintain a stable output voltage even when the input voltage is close to the desired output voltage.
• Small Package Size: The SOIC-8 package allows for compact and space-efficient designs, making it suitable for applications with limited board space.
• Low Quiescent Current: The quiescent current of 40µA ensures minimal power consumption when the regulator is in standby or idle mode.

Advantages and Disadvantages

Advantages: - High efficiency - Low dropout voltage - Small package size - Low quiescent current

Disadvantages: - Limited maximum output current (500mA)

Working Principles

The MAX889SESA+ operates as a linear voltage regulator. It regulates the output voltage by comparing the feedback voltage (FB) with a reference voltage. Any difference between the two voltages is amplified and used to adjust the pass transistor, ensuring a stable output voltage.

Detailed Application Field Plans

The MAX889SESA+ is commonly used in various electronic devices and systems that require a stable and regulated power supply. Some application fields include:

1. Mobile Devices:

   • Smartphones
   • Tablets
   • Portable media players

2. Wearable Electronics:

   • Fitness trackers
   • Smartwatches

3. IoT Devices:

   • Home automation systems
   • Sensor nodes

4. Automotive Electronics:

   • Infotainment systems
   • Advanced driver-assistance systems (ADAS)

5. Industrial Equipment:

   • Control systems
   • Measurement instruments

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with similar specifications and pin configuration.
2. LT1763: Offers higher maximum output current and lower dropout voltage compared to the MAX889SESA+.
3. ADP3339: Provides adjustable output voltage and higher maximum output current.

These alternative models can be considered based on specific requirements and design constraints.

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