MAX771CPA+ - English Editing Encyclopedia Entry

Product Overview

Category

MAX771CPA+ belongs to the category of integrated circuits (ICs).

Use

The MAX771CPA+ IC is commonly used in electronic devices for power management applications.

Characteristics

• The MAX771CPA+ offers high efficiency and low quiescent current, making it suitable for battery-powered devices.
• It provides multiple functions such as voltage regulation, current limiting, and thermal shutdown protection.
• This IC operates over a wide input voltage range and can handle various load conditions.

Package

The MAX771CPA+ is available in a 8-pin PDIP (Plastic Dual In-line Package) package.

Essence

The essence of MAX771CPA+ lies in its ability to efficiently manage power in electronic devices, ensuring stable operation and prolonging battery life.

Packaging/Quantity

The MAX771CPA+ is typically packaged in reels or tubes, with a quantity of 250 units per reel/tube.

Specifications

• Input Voltage Range: 2.7V to 11V
• Output Voltage Range: Adjustable from 1.25V to 10V
• Quiescent Current: 35µA (typical)
• Operating Temperature Range: -40°C to +85°C
• Maximum Output Current: 500mA

Pin Configuration

The MAX771CPA+ features the following pin configuration:

```

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| | --| Vout | --| Vin | --| GND | --| FB | --| EN | --| SS/TR | --| PG | |___________| ```

Functional Features

1. Voltage Regulation: The MAX771CPA+ provides a regulated output voltage, ensuring stable power supply to connected devices.
2. Current Limiting: It incorporates current limiting functionality to protect the circuit and connected devices from excessive current.
3. Thermal Shutdown Protection: The IC includes thermal shutdown protection, preventing damage due to excessive heat.
4. Enable (EN) Pin: The EN pin allows for easy control of the device's power state, enabling or disabling the voltage regulation function.
5. Soft-Start/Tracking (SS/TR) Pin: The SS/TR pin facilitates soft-start and tracking functions, ensuring a smooth transition during power-up.

Advantages and Disadvantages

Advantages

• High efficiency and low quiescent current result in extended battery life.
• Wide input voltage range allows for versatile applications.
• Multiple built-in protections enhance reliability and safety.
• Compact 8-pin package enables space-saving designs.

Disadvantages

• Maximum output current limited to 500mA, which may not be sufficient for high-power applications.
• Limited adjustability of the output voltage range.

Working Principles

The MAX771CPA+ operates based on a switching regulator topology. It utilizes pulse-width modulation (PWM) techniques to regulate the output voltage. By adjusting the duty cycle of the PWM signal, the IC controls the average output voltage, compensating for input voltage variations and load changes.

Detailed Application Field Plans

The MAX771CPA+ finds applications in various electronic devices, including but not limited to: 1. Portable consumer electronics (e.g., smartphones, tablets) 2. Wearable devices (e.g., smartwatches, fitness trackers) 3. Battery-powered medical devices 4. Industrial automation systems 5. IoT (Internet of Things) devices

Detailed and Complete Alternative Models

1. MAX772CPA+: Similar to MAX771CPA+, but with a higher maximum output current of 1A.
2. MAX773CPA+: Offers additional features such as adjustable soft-start and power-good (PG) output.
3. MAX774CPA+: Provides a wider input voltage range and higher efficiency compared to MAX771CPA+.

Note: The above alternative models are from the same MAX77x series, offering similar functionality with slight variations in specifications.

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