The TL3842D-8 is a versatile and efficient PWM (Pulse Width Modulation) controller integrated circuit designed by Texas Instruments. This product is part of the TL384x series of controllers, which are widely recognized for their reliability and performance in power supply applications. The TL3842D-8 features a fixed-frequency current-mode PWM controller with a nominal switching frequency of 52 kHz, making it an excellent choice for a wide range of power conversion applications.

Key Features

• Current-Mode Control: The TL3842D-8 provides improved response to load changes and ensures consistent and stable operation through its current-mode control scheme.
• Automatic Feed-Forward Compensation: This feature helps to enhance the performance by compensating for variations in input voltage without the need for additional external components.
• Low Start-Up and Operating Current: The device is designed to consume minimal power with a start-up current of typically 0.5 mA and an operating current of 8.5 mA, making it suitable for energy-efficient designs.
• Internal Error Amplifier: An integrated error amplifier with a low output impedance allows for direct coupling to the external feedback network, simplifying the design process.
• Oscillator Frequency Stability: The oscillator in the TL3842D-8 is designed to maintain frequency stability over temperature and power supply variations.
• Under-Voltage Lockout (UVLO): The UVLO feature ensures that the controller is operational only when the supply voltage is above a certain threshold, thus protecting the circuitry.

Applications

The TL3842D-8 is ideal for implementing in a variety of power supply designs, including:

• Switching power supplies
• DC-to-DC converters
• Battery chargers
• Power inverters

Product Specifications

With its wide operating range and robust feature set, the TL3842D-8 can handle input voltages from 8.4V to 40V. The package type is SOIC-14, which is a small-outline integrated circuit package that is easy to mount on a variety of PCB layouts. Its operating temperature range is from -40°C to +85°C, making it suitable for industrial applications.

For detailed information, technical documentation, and support, visit the Texas Instruments website or contact their customer support team.