MAX6469TA33AD3+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Adjustable Output Voltage
• Package: 8-pin TDFN (Thin Dual Flat No-Lead)
• Essence: This IC is a low dropout voltage regulator that provides an adjustable output voltage with high accuracy and low quiescent current.
• Packaging/Quantity: 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
• Dropout Voltage: 120mV at 150mA load current
• Quiescent Current: 40µA typical
• Output Current: Up to 150mA
• Line Regulation: ±0.02%/V
• Load Regulation: ±0.05%/mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX6469TA33AD3+T has the following pin configuration:

1. GND (Ground)
2. FB (Feedback)
3. EN (Enable)
4. NC (No Connection)
5. VOUT (Output Voltage)
6. NC (No Connection)
7. VIN (Input Voltage)
8. NC (No Connection)

Functional Features

• Low dropout voltage allows for efficient regulation even with small input-output differentials.
• Adjustable output voltage enables flexibility in various applications.
• Low quiescent current ensures minimal power consumption during standby or idle modes.
• Thermal shutdown protection prevents damage due to excessive temperature.
• Short-circuit current limit protects the IC and connected components from overcurrent conditions.

Advantages and Disadvantages

Advantages: - High accuracy in output voltage regulation. - Low dropout voltage enables efficient power conversion. - Adjustable output voltage provides versatility. - Small package size allows for space-saving designs.

Disadvantages: - Limited output current capacity compared to higher-power regulators. - Requires external components for stability and filtering.

Working Principles

The MAX6469TA33AD3+T is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB pin) with an internal reference voltage. The error amplifier adjusts the pass transistor to maintain the desired output voltage, compensating for load variations and input voltage changes.

Detailed Application Field Plans

The MAX6469TA33AD3+T is suitable for various applications that require a regulated voltage supply. Some potential application fields include:

1. Battery-powered devices: Provides stable voltage for portable electronics such as smartphones, tablets, and wearables.
2. Industrial sensors: Ensures accurate and reliable voltage supply for sensor modules used in industrial automation and control systems.
3. Automotive electronics: Regulates voltage for automotive applications like infotainment systems, lighting controls, and engine management units.
4. IoT devices: Supports voltage regulation in Internet of Things (IoT) devices, including smart home appliances, environmental sensors, and wireless communication modules.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular low dropout voltage regulator with fixed 3.3V output voltage.
2. LT1763-3.3: Another adjustable output voltage regulator with low dropout characteristics.
3. TPS79633: Fixed 3.3V regulator with ultra-low dropout voltage and high PSRR (Power Supply Rejection Ratio).

These alternative models offer similar functionality and can be considered based on specific requirements and availability.

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