LT3694EFE#TRPBF

Overview

The LT3694EFE#TRPBF is a monolithic switching regulator featuring one buck converter and two low-dropout (LDO) regulators, manufactured by Analog Devices Inc. It operates with an input voltage range of 4 V to 36 V and delivers up to 2.6 A from the buck output. The adjustable output voltage spans from 750 mV to 16 V. Integrated features include a programmable switching frequency between 250 kHz and 2.5 MHz, shutdown capability, and thermal regulation. The device functions within a temperature range of -40°C to +125°C and is housed in a 20-lead TSSOP-EP package.

Feature Summary

• Integrates a high-current synchronous buck converter with two independent LDOs for comprehensive power management.
• Supports wide input voltage ranges suitable for industrial and automotive bus architectures.
• Includes thermal regulation to limit junction temperature during overload or high ambient conditions.

Applications

• Industrial control systems requiring multiple regulated rails
• Automotive electronics operating on 12V or 24V buses
• Embedded systems needing compact mixed-signal power solutions

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing. Confirm the EFE package designation matches the required 20-lead TSSOP-EP footprint for PCB layout compatibility. Ensure the -1 variant designation is not required if fixed internal resistor ratios are needed instead of external programming. Cross-reference the manufacturer's latest datasheet revision to confirm pinout consistency before finalizing procurement orders.

Selection Notes

Select this component when a single IC solution is preferred over discrete regulators to save board space. The integrated LDOs provide clean power for sensitive analog sections downstream of the switching node. Consider the thermal performance of the exposed pad design for heat dissipation requirements. Evaluate the switching frequency setting against electromagnetic interference constraints and inductor size limitations.

Part Context

This part belongs to the LT3694 family of triple-output power management ICs. It shares functional similarities with the LT3694EUFD variant but differs in package type and pin configuration. The EFE package offers a surface-mount solution distinct from the QFN options available in the same series. This family targets applications demanding high efficiency and minimal component count.

FAQ

Does the LT3694EFE#TRPBF include thermal regulation?

Yes, the device incorporates thermal regulation that reduces output current if the junction temperature exceeds safe limits.

What is the maximum input voltage for this regulator?

The maximum continuous input voltage supported by the LT3694EFE#TRPBF is 36 V.