LTC1438XCG#TRPBF

DC DC Switching Controllers Overview

The LTC1438XCG#TRPBF is a dual, high-efficiency, low-noise synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 3.5 V to 36 V and provides two independent outputs adjustable from 1.19 V to 9 V. The device supports a maximum output current of 20 mA per channel with a fixed switching frequency of 125 kHz. It features a load regulation of 0.5% and draws a typical operating supply current of 320 uA. Designed for surface mount applications, it is housed in a 28-SSOP package and functions reliably across an operating temperature range of 0°C to +70°C.

DC DC Switching Controllers Feature Summary

• Dual synchronous buck topology driving external N-channel power MOSFETs
• Phase-lockable fixed frequency architecture for noise management
• Integrated shutdown capability for power optimization

DC DC Switching Controllers Applications

• Portable battery-powered equipment requiring efficient dual-rail power
• Industrial control systems needing stable low-voltage DC-DC conversion
• Communication infrastructure utilizing phase-synchronized power supplies

DC DC Switching Controllers Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm the specific suffix matches the required tape-and-reel packaging configuration. Ensure that the 28-SSOP footprint aligns with the target PCB design constraints. Cross-reference the datasheet specifications against the application's thermal and electrical requirements prior to final integration.

DC DC Switching Controllers Selection Notes

Select this controller when dual isolated outputs are required from a single high-voltage rail. It is suitable for designs prioritizing efficiency over raw current capacity due to its 20 mA limit. Consider the 125 kHz fixed frequency for predictable EMI profiles. Evaluate the need for external MOSFETs as the device acts solely as a controller rather than an integrated power stage.

DC DC Switching Controllers Part Context

This component belongs to the LTC1438 family of dual synchronous buck controllers. It shares architectural similarities with models like the LTC1438IG but differs in packaging and specific operational parameters. The family is designed for applications requiring precise voltage regulation and high efficiency in space-constrained environments.

DC DC Switching Controllers Replacement Considerations

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