MAX837EUS-T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low-dropout, adjustable output voltage, low quiescent current
• Package: SOT-23-5
• Essence: The MAX837EUS-T is a voltage regulator IC designed to provide a stable and adjustable output voltage for various electronic devices.
• Packaging/Quantity: Available in tape and reel packaging with 3,000 units per reel.

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 14V
• Output Current: Up to 100mA
• Dropout Voltage: 120mV at 100mA load
• Quiescent Current: 40µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX837EUS-T has a total of five pins arranged as follows:

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| | --| VOUT | --| GND | --| ADJ | --| VIN | --| SHDN | |___________| ```

• VOUT: Output voltage pin
• GND: Ground pin
• ADJ: Adjust pin for setting the output voltage
• VIN: Input voltage pin
• SHDN: Shutdown pin for enabling/disabling the regulator

Functional Features

• Low Dropout: The MAX837EUS-T exhibits a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output Voltage: The output voltage can be easily adjusted using an external resistor connected to the ADJ pin.
• Low Quiescent Current: The IC consumes very low quiescent current, making it suitable for battery-powered applications.
• Thermal Shutdown Protection: The MAX837EUS-T includes thermal shutdown protection to prevent damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Wide input voltage range - Adjustable output voltage - Low dropout voltage - Low quiescent current - Thermal shutdown protection

Disadvantages: - Limited output current capacity (up to 100mA)

Working Principles

The MAX837EUS-T is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It compares the reference voltage with the feedback voltage obtained from the output through a voltage divider network. By adjusting the resistance connected to the ADJ pin, the output voltage can be set to the desired value.

Detailed Application Field Plans

The MAX837EUS-T is commonly used in various electronic devices where a stable and adjustable voltage supply is required. Some potential application fields include:

1. Battery-powered portable devices such as smartphones, tablets, and portable media players.
2. Embedded systems and microcontroller-based projects.
3. Automotive electronics for voltage regulation in car audio systems, lighting controls, and dashboard displays.
4. Industrial automation and control systems.
5. Power management circuits in computer peripherals and networking equipment.

Detailed and Complete Alternative Models

1. LM317: A popular adjustable voltage regulator with similar characteristics.
2. LT1086: Low-dropout, adjustable voltage regulator with higher output current capability.
3. LM1117: Fixed and adjustable voltage regulators available in various package options.
4. TPS7A47: Ultra-low noise, low-dropout voltage regulator suitable for sensitive analog applications.
5. ADP3339: High-accuracy, low-dropout voltage regulator with a wide input voltage range.

These alternative models offer similar functionality and can be considered as substitutes for the MAX837EUS-T in different applications.

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