TL3845BDR

DC DC Switching Controllers Overview

The TL3845BDR is a current-mode PWM controller from Texas Instruments, designed for non-isolated DC-DC converters. It supports Boost, Flyback, and Forward topologies with a single positive output. The device operates within a supply voltage range of 7.6V to 30V and features a switching frequency of 100kHz. It provides a maximum duty cycle of 48% and includes a shutdown function. The component is housed in an 8-SOIC package and functions within an operating temperature range of 0°C to 70°C.

DC DC Switching Controllers Feature Summary

• Implements current-mode pulse width modulation control for stable regulation
• Supports multiple converter topologies including boost, flyback, and forward configurations
• Integrates a dedicated shutdown pin for power management control

DC DC Switching Controllers Applications

• Boost converter designs
• Flyback transformer-based power supplies
• Forward converter circuits

DC DC Switching Controllers Procurement Notes

Verify the specific suffix 'B' indicates the commercial temperature grade variant when sourcing replacements. Confirm the 'DR' designation corresponds to the tape-and-reel packaging format required for automated assembly processes. Ensure compatibility with standard 8-SOIC footprints during PCB layout validation.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring simple current-mode regulation without complex compensation networks. It is suitable for cost-sensitive designs where moderate efficiency and standard switching frequencies are acceptable. Consider thermal performance within the 0°C to 70°C range for industrial or consumer electronics environments.

DC DC Switching Controllers Part Context

This component belongs to the TL384xB series of switching controllers, which are widely used in general-purpose power supply applications. It serves as a robust alternative to legacy UC3845 devices, offering similar functionality in a surface-mount package. The series is known for its reliability in driving external MOSFETs in various isolated and non-isolated converter architectures.

DC DC Switching Controllers Replacement Considerations

TL3845BDRG4-8 is a verified equivalent part number representing the same functional device with RoHS-compliant manufacturing specifications.