UCD7231RTJR

DC DC Switching Controllers Overview

The UCD7231RTJR is a digital control compatible synchronous buck gate driver designed for load point applications. It integrates two high-current drivers for high-side and low-side NMOS switches, supporting switching frequencies up to 2 MHz. The device features an internal VGG series regulator with a wide input voltage range of 4.7 V to 15 V. It includes on-board comparators for high-side FET and output current limit protection, along with a differential high-gain current sense amplifier. The component operates within a temperature range of -40°C to +125°C TJ and utilizes a 20-WFQFN package.

DC DC Switching Controllers Feature Summary

• Integrates dual high-current drivers for synchronous buck high-side and low-side NMOS switches
• Includes on-board comparators for high-side FET and output current limit protection with fault flag output
• Features a differential high-gain current sense amplifier for monitoring voltage proportional to load current
• Supports independent or PWM plus SRE modes with automatic dead-time control

DC DC Switching Controllers Applications

• Digital control synchronous buck power converters
• Load point conversion systems
• Systems requiring integrated overcurrent and thermal protection

DC DC Switching Controllers Procurement Notes

Verify the complete part number including the suffix RTJR to confirm the reel quantity and tape specification. Ensure the ordering code matches the specific package variant required for the PCB layout. Confirm that the RoHS status and environmental compliance meet the project's regulatory standards before finalizing the purchase order.

DC DC Switching Controllers Selection Notes

Select this component when a digital controller requires integrated gate driving and current sensing in a single package. It is suitable for designs needing wide input voltage flexibility and built-in protection against overcurrent and thermal events. Consider the 20-QFN footprint and the requirement for external MOSFETs when evaluating board space and thermal management constraints.

DC DC Switching Controllers Part Context

The UCD7231 belongs to Texas Instruments' family of digital control compatible gate drivers. It is closely related to the UCD7230 and UCD7232 models, which offer similar functionalities with variations in driver configuration and current capabilities. These devices are engineered to simplify the design of complex synchronous buck converters by reducing the component count needed for protection and drive circuits.

DC DC Switching Controllers Replacement Considerations

The UCD7230 and UCD7232 are functionally similar members of the same product family. Verify pin compatibility and specific current ratings before substitution. No direct public substitute part numbers are confirmed for immediate replacement without schematic review.