MAX8867EUK33+T

Product Overview

• Category: Voltage Regulator
• Use: Power management
• Characteristics: Low dropout, low quiescent current, high output accuracy
• Package: SOT23-5
• Essence: Linear regulator
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage: 3.3V
• Output Current: Up to 150mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA (typical)
• Line Regulation: ±0.05% (typical)
• Load Regulation: ±0.1% (typical)
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8867EUK33+T has a total of five pins:

1. VIN - Input voltage pin
2. GND - Ground pin
3. FB - Feedback pin for setting the output voltage
4. EN - Enable pin for turning the regulator on/off
5. VOUT - Output voltage pin

Functional Features

• Low dropout voltage allows efficient regulation even with small input-output differentials.
• Low quiescent current ensures minimal power consumption during standby or idle states.
• High output accuracy provides precise voltage regulation for sensitive applications.
• Thermal shutdown and current limit protection ensure safe operation under fault conditions.
• Fast transient response enables quick stabilization of the output voltage.

Advantages and Disadvantages

Advantages

• Compact SOT23-5 package offers space-saving benefits.
• Wide input voltage range allows flexibility in various applications.
• Low dropout voltage minimizes power dissipation and extends battery life.
• Excellent line and load regulation ensure stable output voltage under varying conditions.

Disadvantages

• Limited output current may not be suitable for high-power applications.
• Requires external components for proper operation, increasing overall system complexity.

Working Principles

The MAX8867EUK33+T is a linear regulator that uses a PNP pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB) with an internal reference voltage to adjust the pass transistor's conduction, maintaining a constant output voltage. The enable pin (EN) allows the user to turn the regulator on or off as needed.

Detailed Application Field Plans

The MAX8867EUK33+T finds applications in various fields, including:

1. Battery-powered devices: Portable electronics, handheld instruments, and wireless sensors benefit from its low quiescent current and efficient power management capabilities.
2. Automotive systems: Provides stable voltage regulation for automotive modules, such as infotainment systems, lighting controls, and sensor interfaces.
3. Industrial equipment: Suitable for powering control circuits, sensors, and communication modules in industrial automation and monitoring systems.
4. Consumer electronics: Can be used in audio/video equipment, set-top boxes, and gaming consoles to ensure reliable power supply.

Detailed and Complete Alternative Models

1. MAX8867EUK25+T: Output voltage of 2.5V, otherwise similar specifications.
2. MAX8867EUK18+T: Output voltage of 1.8V, otherwise similar specifications.
3. MAX8867EUK50+T: Output voltage of 5.0V, otherwise similar specifications.

These alternative models provide different output voltages while maintaining the same essential features and characteristics as the MAX8867EUK33+T.

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