MAX388EPN

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: High efficiency, low dropout voltage, adjustable output voltage
• Package: DIP (Dual In-line Package)
• Essence: Linear regulator with adjustable output voltage
• Packaging/Quantity: Tube packaging, 25 pieces per tube

Specifications

• Input Voltage Range: 2.5V to 16V
• Output Voltage Range: 1.25V to 15V
• Dropout Voltage: 0.4V at 1A load current
• Output Current: Up to 1.5A
• Quiescent Current: 75µA
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/A
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX388EPN has a total of 8 pins arranged as follows:

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| | --| Vout | --| Vin | --| GND | --| ADJ | --| NC | --| NC | --| NC | |___________| ```

Functional Features

• Adjustable output voltage through the ADJ pin
• Low dropout voltage allows for efficient operation even with small input-output differentials
• Built-in thermal shutdown protection prevents overheating
• Short-circuit and reverse polarity protection ensure device safety
• Low quiescent current minimizes power consumption in standby mode

Advantages

• Wide input voltage range enables versatile applications
• High efficiency results in reduced power dissipation
• Compact DIP package facilitates easy integration into various circuits
• Adjustable output voltage provides flexibility for different requirements
• Robust protection features enhance device reliability

Disadvantages

• Limited output current may not be suitable for high-power applications
• DIP package may not be ideal for space-constrained designs
• Requires external components for stability and filtering

Working Principles

The MAX388EPN is a linear voltage regulator that uses a pass transistor to regulate the output voltage. It operates by comparing the reference voltage with a fraction of the output voltage through a feedback network. The error amplifier adjusts the pass transistor's resistance to maintain a stable output voltage, compensating for load variations and input voltage changes.

Detailed Application Field Plans

The MAX388EPN finds applications in various fields, including:

1. Consumer Electronics: Powering audio/video equipment, portable devices, and gaming consoles.
2. Automotive: Regulating voltage for infotainment systems, lighting modules, and sensors.
3. Industrial: Providing stable power supply for control systems, motor drives, and instrumentation.
4. Telecommunications: Voltage regulation in networking equipment, routers, and modems.
5. Medical Devices: Powering medical instruments, patient monitoring systems, and diagnostic equipment.

Alternative Models

1. LM317: Adjustable voltage regulator with similar specifications and pin configuration.
2. LT1083: High-current adjustable linear regulator with improved load regulation.
3. LM1117: Low dropout voltage regulator available in various fixed output voltages.

These alternative models offer similar functionality and can be considered as substitutes for the MAX388EPN in specific applications.

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