MAX680CPA

Product Overview

• Category: Integrated Circuit (IC)
• Use: Voltage Regulator
• Characteristics: Low Dropout, Adjustable Output, Precision
• Package: 8-Pin PDIP (Plastic Dual In-Line Package)
• Essence: The MAX680CPA is a voltage regulator IC that provides a stable output voltage with low dropout voltage. It is commonly used in electronic devices to regulate and maintain a constant voltage level.
• Packaging/Quantity: The MAX680CPA is typically sold in reels or tubes containing multiple units.

Specifications

• Input Voltage Range: 2.5V to 11V
• Output Voltage Range: 1.25V to 10V
• Dropout Voltage: 0.3V at 100mA load current
• Output Current: Up to 150mA
• Quiescent Current: 75µA (typical)
• Line Regulation: 0.02%/V
• Load Regulation: 0.04%/mA
• Operating Temperature Range: -40°C to +85°C

Pin Configuration

The MAX680CPA has the following pin configuration:

```

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| | --| Vout | --| Vin | --| GND | --| Adj | --| | --| | --| | |___________| ```

• Vin: Input voltage pin
• Vout: Output voltage pin
• GND: Ground pin
• Adj: Adjust pin for setting the output voltage

Functional Features

• Low Dropout: The MAX680CPA has a low dropout voltage, allowing it to regulate the output voltage even when the input voltage is close to the desired output voltage.
• Adjustable Output: The output voltage can be adjusted using an external resistor connected to the Adj pin.
• Precision: The MAX680CPA provides a precise and stable output voltage, ensuring accurate voltage regulation.

Advantages and Disadvantages

Advantages: - Low dropout voltage - Adjustable output voltage - Precision voltage regulation - Wide input voltage range - Low quiescent current

Disadvantages: - Limited output current capacity (up to 150mA) - Limited temperature range (-40°C to +85°C)

Working Principles

The MAX680CPA is based on a linear voltage regulator circuit. It uses a pass transistor to regulate the output voltage by adjusting the resistance between the Vin and Vout pins. The adjustable output feature allows users to set the desired output voltage by connecting an external resistor to the Adj pin.

Application Field Plans

The MAX680CPA is commonly used in various electronic devices that require stable and regulated power supply voltages. Some of its application fields include:

1. Battery-powered devices: The low dropout voltage and adjustable output make it suitable for battery-powered devices where maintaining a stable voltage level is crucial.
2. Portable audio players: The precision voltage regulation ensures high-quality audio output.
3. Embedded systems: The wide input voltage range and low quiescent current make it suitable for powering microcontrollers and other embedded components.
4. Automotive electronics: The operating temperature range allows it to be used in automotive applications where temperature variations are common.

Alternative Models

• LM317: A popular alternative with similar characteristics and adjustable output voltage.
• LT1083: Another alternative with higher output current capacity and wider temperature range.

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