MAX6381XR18D2+T

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Precision, Adjustable Output
• Package: SOT23-3
• Essence: This IC is a low dropout voltage regulator designed to provide a precise and adjustable output voltage for various applications.
• Packaging/Quantity: Tape & Reel, 3000 units per reel

Specifications

• Input Voltage Range: 2.5V to 6.5V
• Output Voltage Range: 1.8V to 5.5V
• Dropout Voltage: 120mV at 100mA load current
• Output Current: Up to 150mA
• Line Regulation: ±0.02%/V
• Load Regulation: ±0.05%/mA
• Quiescent Current: 40µA (typical)
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX6381XR18D2+T IC has the following pin configuration:

```

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| | --| VOUT GND|-- --| VIN NC |-- |___________| ```

• VIN: Input Voltage Pin
• VOUT: Output Voltage Pin
• GND: Ground Pin
• NC: No Connection Pin

Functional Features

• Low dropout voltage: Allows operation with small input-output voltage differentials.
• Precision output voltage: Provides accurate and stable output voltage.
• Adjustable output voltage: Can be adjusted within the specified range using external resistors.
• Low quiescent current: Ensures minimal power consumption during standby or idle mode.
• Thermal shutdown protection: Prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Precise and adjustable output voltage. - Low dropout voltage for efficient operation. - Small package size for space-constrained applications. - Thermal shutdown protection ensures device safety.

Disadvantages: - Limited output current capability (up to 150mA). - Restricted input voltage range (2.5V to 6.5V).

Working Principles

The MAX6381XR18D2+T 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, adjusting the pass transistor accordingly to maintain a stable output voltage. The adjustable output voltage feature allows users to set the desired voltage level using external resistors.

Detailed Application Field Plans

The MAX6381XR18D2+T can be used in various applications where a precise and adjustable voltage supply is required. Some potential application fields include:

1. Battery-powered devices: Provides regulated voltage for portable electronics such as smartphones, tablets, and wearables.
2. Industrial control systems: Ensures stable voltage supply for sensors, actuators, and control circuits.
3. Automotive electronics: Regulates voltage for automotive modules, infotainment systems, and lighting controls.
4. Communication equipment: Maintains a stable voltage for routers, switches, and wireless access points.
5. Medical devices: Provides reliable voltage regulation for medical instruments and diagnostic equipment.

Detailed and Complete Alternative Models

1. LM1117-ADJ: Adjustable Voltage Regulator, TO-220 package, 800mA output current.
2. LT1763-ADJ: Adjustable LDO Regulator, SOT-223 package, 500mA output current.
3. MCP1700T-3302E/TT: Fixed Voltage Regulator, SOT-23 package, 250mA output current.

These alternative models offer similar functionality and can be considered as substitutes for the MAX6381XR18D2+T in various applications.

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