TPS923655DRRR

Overview

The TPS923655DRRR is a non-synchronous boost or buck-boost LED driver IC from Texas Instruments. It features an integrated switching FET and supports output currents up to 4 A with a maximum supply voltage of 65 V. The device operates within an input voltage range of 4.5 V to 65 V and delivers an output voltage between 0 V and 63 V. It functions at a programmable switching frequency ranging from 100 kHz to 2.2 MHz. The component is housed in a WSON-12 package and supports analog, flexible, hybrid, and PWM dimming methods. It operates reliably across a temperature range of -40°C to +125°C.

Feature Summary

• Supports both boost and buck-boost topologies for versatile LED string configurations
• Integrates cycle-by-cycle over-current protection and thermal foldback mechanisms
• Provides fault output capabilities including LED open and short detection
• Enables precise control through multiple dimming interfaces such as PWM and analog

Applications

• Automotive exterior lighting systems requiring high current drive
• Industrial high-bay LED lighting fixtures
• Portable battery-powered illumination devices
• General solid-state lighting applications with variable input voltages

Procurement Notes

Verify the specific ordering suffix DRRR corresponds to the required tape and reel quantity of 3000 units. Confirm that the WSON-12 package dimensions align with the target PCB layout constraints. Ensure the design accounts for the non-synchronous topology characteristics when selecting external components. Validate that the thermal management strategy supports operation within the specified junction temperature limits under maximum load conditions.

Selection Notes

Choose this component when application requirements demand high output current capability up to 4 A. Select this model if the power source voltage varies significantly relative to the LED forward voltage, necessitating buck-boost functionality. Consider this part for designs requiring integrated fault detection and protection without external discrete components. Evaluate the programmable frequency range to optimize filter size and efficiency for the specific system architecture.

Part Context

This device belongs to the TPS9236xx series of LED drivers designed for robust performance in demanding environments. It complements other Texas Instruments power management solutions by providing specialized constant current regulation for LED loads. The integration of the switching FET reduces the bill of materials compared to discrete solutions. It serves as a key component in modern lighting architectures prioritizing reliability and compact form factors.

Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation.