LTC1438CG-ADJ#TRPBF

DC DC Switching Controllers Overview

The LTC1438CG-ADJ#TRPBF is a dual synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 3.5V to 30V and supports adjustable output voltages. The device features a switch frequency up to 400kHz and delivers a maximum duty cycle of 99%. Packaged in a 28-SSOP format, it includes control features such as enable, power-on reset, and soft start. The component is designed for surface mount installation and functions as a positive output buck DC-DC controller.

DC DC Switching Controllers Feature Summary

• Dual synchronous step-down architecture driving external N-channel MOSFETs
• Phase-lockable fixed frequency operation with adjustable settings
• Integrated power-on reset and soft start functionality

DC DC Switching Controllers Applications

• Industrial systems requiring dual rail power distribution
• Telecommunications infrastructure power supplies
• Embedded computing platforms needing synchronized buck regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when sourcing. Confirm the CG variant meets the required commercial temperature range of 0°C to 70°C. Ensure compatibility with the 28-SSOP footprint during PCB layout. Cross-reference the manufacturer datasheet for latest RoHS compliance status before finalizing procurement orders.

DC DC Switching Controllers Selection Notes

Select this controller for designs requiring two independent regulated outputs from a single high-voltage source. The adjustable frequency allows optimization for efficiency or component size. Verify that external MOSFETs can handle the required current levels, as the IC drives rather than contains the power switches. Consider the 30V maximum input limit when choosing input filtering components.

DC DC Switching Controllers Part Context

This component belongs to the LTC1438 family of dual synchronous buck controllers. It shares architectural similarities with the LTC1438IG but differs in package and temperature rating. The part serves as a core power management element in multi-rail systems, replacing discrete solutions with integrated timing and control logic for improved board space utilization.

DC DC Switching Controllers Replacement Considerations

LTC1438XCG#PBF offers similar dual-buck functionality in a tube package. LTC1438IG-ADJ#PBF provides equivalent electrical performance in an industrial temperature grade. Verify pinout compatibility and thermal requirements when substituting these variants.