MAX1774EEI+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX1774EEI+ is a voltage regulator IC designed for use in various electronic devices. It provides a stable output voltage, making it suitable for applications that require precise power supply.

Characteristics: - Input Voltage Range: 2.5V to 5.5V - Output Voltage Range: 1.25V to 3.3V - Maximum Output Current: 500mA - Low Dropout Voltage: 120mV at 100mA - Low Quiescent Current: 40µA - Adjustable Output Voltage - Thermal Shutdown Protection

Package: The MAX1774EEI+ is available in an industry-standard 28-pin SSOP package, which offers good thermal performance and ease of soldering.

Essence: This voltage regulator IC is designed to provide a stable and regulated output voltage, ensuring reliable operation of electronic devices.

Packaging/Quantity: The MAX1774EEI+ is typically sold in reels or tubes containing a quantity of 250 units per package.

Specifications

• Input Voltage Range: 2.5V to 5.5V
• Output Voltage Range: 1.25V to 3.3V
• Maximum Output Current: 500mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• Operating Temperature Range: -40°C to +85°C
• Package Type: 28-pin SSOP

Detailed Pin Configuration

The MAX1774EEI+ features the following pin configuration:

1. VIN: Input Voltage
2. GND: Ground
3. FB: Feedback Pin
4. EN: Enable Pin
5. VOUT: Output Voltage
6. VCC: Supply Voltage
7. PGND: Power Ground
8. AGND: Analog Ground
9. SS/TR: Soft-Start/Tracking Pin
10. COMP: Compensation Pin
11. BST: Bootstrap Pin
12. SW: Switching Node
13. LX: Inductor Connection
14. SS/TR: Soft-Start/Tracking Pin
15. COMP: Compensation Pin
16. BST: Bootstrap Pin
17. SW: Switching Node
18. LX: Inductor Connection
19. SS/TR: Soft-Start/Tracking Pin
20. COMP: Compensation Pin
21. BST: Bootstrap Pin
22. SW: Switching Node
23. LX: Inductor Connection
24. SS/TR: Soft-Start/Tracking Pin
25. COMP: Compensation Pin
26. BST: Bootstrap Pin
27. SW: Switching Node
28. LX: Inductor Connection

Functional Features

The MAX1774EEI+ offers the following functional features:

1. Voltage Regulation: The IC provides a stable and regulated output voltage, ensuring reliable operation of connected devices.
2. Adjustable Output: The output voltage can be adjusted within the specified range using external resistors.
3. Low Dropout Voltage: The IC exhibits low dropout voltage, minimizing power dissipation and maximizing efficiency.
4. Thermal Shutdown Protection: The device incorporates thermal shutdown protection, preventing damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows compatibility with various power sources. - Adjustable output voltage provides flexibility for different applications. - Low dropout voltage ensures efficient power conversion. - Thermal shutdown protection enhances reliability.

Disadvantages: - Maximum output current limited to 500mA, which may not be sufficient for high-power applications. - Limited output voltage range may not be suitable for all voltage requirements.

Working Principles

The MAX1774EEI+ operates as a step-down (buck) voltage regulator. It utilizes a switching mechanism to efficiently convert the input voltage to a lower, regulated output voltage. The internal control circuitry adjusts the duty cycle of the switching transistor to maintain the desired output voltage despite variations in the input voltage and load conditions.

Detailed Application Field Plans

The MAX1774EEI+ finds applications in various electronic devices that require a stable and regulated power supply. Some potential application fields include:

1. Portable Electronics: Battery-powered devices such as smartphones, tablets, and portable media players can benefit from the voltage regulation provided by the MAX1774EEI+.
2. Wireless Communication Systems: The IC can be used in wireless communication systems, ensuring consistent power supply to critical components.
3. Industrial Control Systems: The stability and efficiency of the MAX1774EEI+ make it suitable for use in industrial control systems, where precise power regulation is essential.
4. Automotive Electronics: The IC can be employed in automotive electronics, providing reliable power to