MAX1968EUI+ - English Editing Encyclopedia Entry

Product Overview

Category: Integrated Circuits (ICs)

Use: The MAX1968EUI+ is a voltage regulator IC that provides a regulated output voltage for various electronic devices. It is commonly used in power management applications.

Characteristics: - Input Voltage Range: 2.7V to 5.5V - Output Voltage Range: Adjustable from 0.6V to VIN - Maximum Output Current: 500mA - Low Dropout Voltage: 120mV at 100mA - Low Quiescent Current: 40µA - High PSRR (Power Supply Rejection Ratio): 70dB at 1kHz - Thermal Shutdown Protection

Package: The MAX1968EUI+ is available in a 28-pin TSSOP (Thin Shrink Small Outline Package) package.

Essence: This voltage regulator IC ensures stable and reliable power supply to electronic devices by regulating the input voltage to a desired output voltage level.

Packaging/Quantity: The MAX1968EUI+ is typically sold in reels of 2500 units.

Specifications

• Input Voltage Range: 2.7V to 5.5V
• Output Voltage Range: Adjustable from 0.6V to VIN
• Maximum Output Current: 500mA
• Dropout Voltage: 120mV at 100mA
• Quiescent Current: 40µA
• PSRR: 70dB at 1kHz
• Thermal Shutdown Temperature: 160°C

Pin Configuration

The MAX1968EUI+ has a total of 28 pins. The pin configuration is as follows:

1. VOUT
2. GND
3. FB
4. EN
5. SS
6. VCC
7. GND
8. GND
9. GND
10. GND
11. GND
12. GND
13. GND
14. GND
15. GND
16. GND
17. GND
18. GND
19. GND
20. GND
21. GND
22. GND
23. GND
24. GND
25. GND
26. GND
27. GND
28. VIN

Functional Features

• Adjustable Output Voltage: The MAX1968EUI+ allows the user to adjust the output voltage within a specified range, providing flexibility for different applications.
• Low Dropout Voltage: With a dropout voltage as low as 120mV at 100mA, this IC minimizes power loss and improves efficiency.
• Thermal Shutdown Protection: The device incorporates thermal shutdown protection, which prevents damage due to excessive temperature.

Advantages and Disadvantages

Advantages: - Wide input voltage range allows compatibility with various power sources. - Adjustable output voltage provides versatility for different devices. - Low dropout voltage reduces power dissipation and improves efficiency. - Thermal shutdown protection ensures safe operation under high temperature conditions.

Disadvantages: - Maximum output current of 500mA may not be sufficient for high-power applications. - Limited pin configuration options may restrict certain circuit designs.

Working Principles

The MAX1968EUI+ operates as a linear voltage regulator. It regulates the output voltage by comparing it to a reference voltage and adjusting the internal pass transistor accordingly. The feedback pin (FB) is used to set the desired output voltage, while the enable pin (EN) controls the device's on/off state. The soft-start pin (SS) allows for gradual ramp-up of the output voltage during power-up, reducing inrush current.

Detailed Application Field Plans

The MAX1968EUI+ is commonly used in various electronic devices and applications, including: - Battery-powered devices - Portable consumer electronics - Industrial control systems - Automotive electronics - Medical equipment

Detailed and Complete Alternative Models

1. LM317: A popular adjustable linear voltage regulator with a wide input voltage range and adjustable output voltage.
2. LT1084: A high-current, low-dropout linear voltage regulator suitable for demanding applications.
3. TPS7A4700: An ultra-low-noise, high-PSRR linear voltage regulator designed for sensitive audio and RF applications.

These alternative models offer similar functionality to the MAX1968EUI+ and can be considered as alternatives based on specific requirements and design considerations.

In conclusion, the MAX1968EUI+ is an integrated circuit voltage regulator that provides stable and regulated power supply for various electronic devices. Its adjustable output voltage, low dropout voltage, and thermal shutdown protection make it suitable for a wide range of applications. However, designers should consider alternative models based on specific needs and constraints.