MAX628EPA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High precision, low dropout voltage, adjustable output, current limiting
• Package: 8-pin PDIP (Plastic Dual In-line Package)
• Essence: Linear regulator with adjustable output voltage
• Packaging/Quantity: Tube packaging, 25 units per tube

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 15V
• Dropout Voltage: 0.4V at 100mA load current
• Line Regulation: 0.01% typical
• Load Regulation: 0.05% typical
• Quiescent Current: 500µA typical
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX628EPA has the following pin configuration:

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| | --| Vout | --| Adj/Gnd | --| Vin | --| NC | --| NC | --| NC | --| NC | |___________| ```

Functional Features

• Adjustable output voltage through the Vout and Adj/Gnd pins.
• Low dropout voltage allows for efficient regulation even with small input-output voltage differentials.
• Current limiting feature protects the circuit from excessive load currents.
• Excellent line and load regulation ensures stable output voltage under varying conditions.
• Low quiescent current minimizes power consumption.

Advantages and Disadvantages

Advantages: - High precision voltage regulation. - Wide input and output voltage range. - Low dropout voltage. - Adjustable output voltage. - Current limiting protection.

Disadvantages: - Limited number of pins for additional functionality. - Not suitable for high current applications.

Working Principles

The MAX628EPA is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with the feedback voltage obtained from the voltage divider connected to the Adj/Gnd pin. The pass transistor adjusts its resistance to maintain a constant output voltage, compensating for changes in load and input voltage.

Detailed Application Field Plans

The MAX628EPA is commonly used in various electronic devices and systems, including:

1. Battery-powered devices: Provides stable voltage regulation for portable electronics such as smartphones, tablets, and digital cameras.
2. Industrial control systems: Used in automation and control systems to ensure precise and reliable power supply for sensors, actuators, and other components.
3. Automotive electronics: Regulates voltage for automotive applications like infotainment systems, lighting, and engine control units.
4. Communication equipment: Ensures stable power supply for routers, switches, and other network devices.
5. Medical devices: Used in medical equipment where accurate and reliable voltage regulation is critical.

Detailed and Complete Alternative Models

1. LM317: Adjustable voltage regulator with similar characteristics and pin configuration.
2. LT1086: Low dropout voltage regulator with adjustable output voltage.
3. LM1117: Fixed output voltage regulator available in various voltage options.
4. L78xx: Series of fixed output voltage regulators with different voltage options.

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

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