UCC3921DTR/81143

Product Overview

Category

UCC3921DTR/81143 belongs to the category of integrated circuits (ICs).

Use

This product is commonly used in electronic devices for voltage regulation and power management.

Characteristics

• Integrated circuit
• Voltage regulation
• Power management

Package

UCC3921DTR/81143 is available in a small outline package (SOP) or thin shrink small outline package (TSSOP).

Essence

The essence of UCC3921DTR/81143 lies in its ability to regulate voltage efficiently and manage power consumption effectively.

Packaging/Quantity

This product is typically packaged in reels or tubes, with quantities varying depending on customer requirements.

Specifications

• Input voltage range: 2.7V to 5.5V
• Output voltage range: 0.8V to 3.6V
• Maximum output current: 500mA
• Operating temperature range: -40°C to +85°C
• Switching frequency: 1.5MHz

Detailed Pin Configuration

UCC3921DTR/81143 has the following pin configuration:

1. VIN: Input voltage
2. GND: Ground
3. FB: Feedback pin for voltage regulation
4. EN: Enable pin for turning the device on/off
5. SW: Switching node for power transfer
6. VOUT: Output voltage

Functional Features

• Wide input voltage range allows compatibility with various power sources.
• High efficiency and low dropout voltage ensure optimal power management.
• Built-in protection features such as overcurrent and thermal shutdown enhance reliability.
• Fast transient response enables stable voltage regulation during load changes.

Advantages and Disadvantages

Advantages

• Efficient voltage regulation
• Effective power management
• Wide input voltage range
• Built-in protection features

Disadvantages

• Limited maximum output current (500mA)
• Relatively high switching frequency (1.5MHz)

Working Principles

UCC3921DTR/81143 operates based on a pulse width modulation (PWM) control scheme. It uses feedback from the FB pin to regulate the output voltage by adjusting the duty cycle of the internal power switch. This allows for efficient conversion of input voltage to the desired output voltage.

Detailed Application Field Plans

UCC3921DTR/81143 finds applications in various electronic devices, including but not limited to: - Mobile phones - Tablets - Portable media players - Digital cameras - Wireless communication devices

Detailed and Complete Alternative Models

1. UCC3922DTR/81144

   • Similar specifications and features as UCC3921DTR/81143
   • Different pin configuration

2. UCC3923DTR/81145

   • Higher maximum output current (1A)
   • Similar specifications and features as UCC3921DTR/81143

3. UCC3924DTR/81146

   • Lower switching frequency (1MHz)
   • Similar specifications and features as UCC3921DTR/81143

In conclusion, UCC3921DTR/81143 is an integrated circuit used for voltage regulation and power management in electronic devices. Its wide input voltage range, efficiency, and built-in protection features make it suitable for various applications. However, its limited maximum output current and relatively high switching frequency should be considered when selecting alternative models.