MAX6471TA33BD3+T

Product Overview

• Category: Voltage Regulator
• Use: Power management
• Characteristics: Low-dropout (LDO) linear regulator
• Package: 8-pin TDFN
• Essence: Provides a regulated output voltage with low dropout voltage
• Packaging/Quantity: Tape and reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage: 3.3V
• Dropout Voltage: 120mV at 150mA load current
• Maximum Output Current: 250mA
• Line Regulation: ±0.05% typical
• Load Regulation: ±0.1% typical
• Quiescent Current: 40µA typical
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6471TA33BD3+T has the following pin configuration:

1. GND: Ground connection
2. IN: Input voltage supply
3. EN: Enable pin for turning the regulator on/off
4. BYP: Bypass capacitor connection
5. FB: Feedback pin for setting the output voltage
6. NC: No connection
7. OUT: Regulated output voltage
8. VOUT: Output voltage bypass capacitor connection

Functional Features

• Low dropout voltage allows efficient regulation even with small input-output voltage differentials
• Excellent line and load regulation ensures stable output voltage under varying conditions
• Low quiescent current minimizes power consumption in standby or low-load situations
• Thermal shutdown and current limit protection ensure safe operation

Advantages and Disadvantages

Advantages: - Low dropout voltage enables efficient power management - Wide input voltage range provides flexibility in various applications - Small package size saves board space - Excellent line and load regulation ensures stable output voltage

Disadvantages: - Maximum output current may be limiting for high-power applications - Limited operating temperature range (-40°C to +85°C)

Working Principles

The MAX6471TA33BD3+T is a low-dropout linear regulator that regulates the output voltage by maintaining a small voltage difference between the input and output. It achieves this by using a pass transistor that adjusts its resistance to maintain a constant output voltage. The feedback pin (FB) is used to set the desired output voltage, which is compared to an internal reference voltage. Any deviation from the set voltage causes the pass transistor to adjust its resistance accordingly, ensuring a stable output voltage.

Detailed Application Field Plans

The MAX6471TA33BD3+T is commonly used in various applications where a stable and regulated 3.3V power supply is required. Some typical application fields include:

1. Battery-powered devices: Provides a regulated voltage for microcontrollers, sensors, and other low-power components in portable electronics.
2. Industrial control systems: Used to power analog and digital circuits in industrial automation, PLCs, and control panels.
3. Automotive electronics: Provides a stable voltage for automotive sensors, actuators, and control modules.
4. IoT devices: Suitable for powering wireless communication modules, sensors, and microcontrollers in IoT applications.
5. Consumer electronics: Used in audio/video equipment, gaming consoles, and other consumer devices requiring a regulated power supply.

Detailed and Complete Alternative Models

1. LM1117-3.3: Low dropout voltage regulator with similar specifications and package.
2. LT1763-3.3: High-performance LDO regulator with lower dropout voltage and higher maximum output current.
3. TPS79633: Ultra-low noise LDO regulator with adjustable output voltage and higher maximum output current.

These alternative models offer similar functionality and can be considered as substitutes for the MAX6471TA33BD3+T in various applications.

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