MAX8573EUT+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High Efficiency, Low Dropout Voltage, Small Package Size
• Package: SOT-23-6
• Essence: Linear Regulator
• Packaging/Quantity: Tape and Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 1.2V to 5.5V
• Maximum Output Current: 500mA
• Dropout Voltage: 120mV at 500mA
• Quiescent Current: 40µA
• Line Regulation: ±0.02%/V
• Load Regulation: ±0.05%/mA
• Operating Temperature Range: -40°C to +85°C

Detailed Pin Configuration

The MAX8573EUT+T has a total of six pins arranged as follows:

```

---

| | --| VOUT GND|-- Pin 1: Ground (GND) --| VIN EN |-- Pin 2: Enable (EN) --| FB NC |-- Pin 3: No Connection (NC) --| NC VOUT|-- Pin 4: Output Voltage (VOUT) --| NC VIN |-- Pin 5: Input Voltage (VIN) --|___________| ```

Functional Features

• Low dropout voltage enables efficient regulation even with small input-output differentials.
• Wide input voltage range allows for versatile applications.
• Excellent line and load regulation ensures stable output voltage under varying conditions.
• Low quiescent current minimizes power consumption in standby mode.
• Thermal shutdown and current limit protection enhance device reliability.

Advantages and Disadvantages

Advantages: - High efficiency due to low dropout voltage. - Small package size allows for space-constrained designs. - Wide input voltage range enables compatibility with various power sources. - Excellent line and load regulation ensures stable output voltage.

Disadvantages: - Limited maximum output current of 500mA. - Noisy output voltage at high frequencies due to linear regulation.

Working Principles

The MAX8573EUT+T is a linear regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the feedback voltage (FB) with a reference voltage, adjusting the pass transistor accordingly to maintain a stable output voltage. The dropout voltage is minimized by using a low resistance pass transistor.

Detailed Application Field Plans

The MAX8573EUT+T is commonly used in applications where a stable and regulated voltage supply is required. Some typical application fields include:

1. Battery-Powered Devices: Portable electronics such as smartphones, tablets, and wearable devices benefit from the low dropout voltage and wide input voltage range of the MAX8573EUT+T.
2. Industrial Control Systems: The regulator's small package size and low quiescent current make it suitable for space-constrained industrial control systems.
3. Automotive Electronics: The wide operating temperature range (-40°C to +85°C) makes the MAX8573EUT+T ideal for automotive applications, including infotainment systems and lighting controls.

Detailed and Complete Alternative Models

1. LM1117-3.3: A popular alternative with a fixed output voltage of 3.3V.
2. LT1763: Offers higher maximum output current of 1.5A.
3. TPS7A4700: Provides adjustable output voltage and ultra-low dropout voltage.

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

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