LT3688EFE#TRPBF

Overview

The LT3688EFE#TRPBF is a dual synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.8V to 36V and withstands transients up to 60V. The device provides two adjustable output channels, each capable of delivering up to 800mA. It features a programmable switching frequency ranging from 500kHz to 2.1MHz. Integrated functionalities include power-on reset timers for both outputs and a watchdog timer. The component is housed in a 24-lead TSSOP package with an exposed pad and supports operation temperatures from -40°C to +125°C.

Feature Summary

• Dual independent adjustable buck converter channels
• Integrated power-on reset timers for output monitoring
• Built-in watchdog timer for system reliability
• Programmable switching frequency for optimization

Applications

• Industrial control systems requiring dual voltage rails
• Telecommunications infrastructure equipment
• Embedded computing platforms
• Portable instrumentation powered by high-voltage sources

Procurement Notes

Verify the specific suffix TRPBF indicates tape-and-reel packaging when sourcing components. Confirm the EFE package variant matches the target PCB footprint requirements. Ensure compatibility with the intended operating temperature range and verify RoHS compliance status through official manufacturer documentation prior to integration.

Selection Notes

Select this component when dual isolated or non-isolated low-voltage rails are required from a higher voltage bus. The integrated reset and watchdog features reduce external component count compared to standard regulators. Consider the thermal performance of the TSSOP-EP package for the expected load current and ambient conditions.

Part Context

This part belongs to the LT3688 family of dual synchronous buck regulators. It shares core architecture with variants like the LT3688EUF but differs in package type. The series is designed for applications needing compact solutions with built-in protection and timing features without external supervision ICs.

Replacement Considerations

LT3688EFE#PBF is the tube-packaged equivalent of this reel-part. Cross-reference with other dual buck regulators if pinout or feature sets differ significantly.