LTC1538IG-AUX#TRPBF

DC DC Switching Controllers Overview

The LTC1538IG-AUX#TRPBF is a dual synchronous step-down switching regulator controller from Analog Devices. It operates within a phase-lockable fixed frequency architecture to drive external N-channel power MOSFETs. The device supports an input voltage range of 5.2V to 28V and provides dual outputs, typically configured for 5V and 3.3V or 3V. It delivers output currents up to 3.5A per channel with high efficiency, often exceeding 95% in reference designs. The component is housed in a 28-lead SSOP package.

DC DC Switching Controllers Feature Summary

• Dual synchronous buck controller architecture driving external N-channel MOSFETs
• Phase-lockable fixed frequency operation for synchronized multi-phase systems
• Internal circuitry adaptable to various additional configurations including auxiliary outputs

DC DC Switching Controllers Applications

• High efficiency dual 5V/3V step-down converter circuits
• Triple output DC/DC converters utilizing secondary winding power
• Systems requiring low noise dual switching regulator control

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging when ordering. Confirm the manufacturer is Analog Devices Inc. Ensure the part number matches the IG-AUX variant for the correct electrical characteristics and pinout. Cross-reference with official datasheets for thermal and electrical limits before integration.

DC DC Switching Controllers Selection Notes

Select this controller for applications requiring two independent synchronous buck channels with high efficiency. It is suitable for designs needing phase-lockable frequencies to reduce EMI or synchronize with other converters. Consider external MOSFET selection based on the required current and voltage ratings. Verify compatibility with the desired operating frequency and output voltage ranges.

DC DC Switching Controllers Part Context

This component belongs to the LTC1538 family of high-efficiency, low-noise synchronous step-down switching regulators. These controllers are designed for demanding power management applications where size and efficiency are critical. The AUX suffix denotes specific internal configuration options or auxiliary features compared to standard variants.

DC DC Switching Controllers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult Analog Devices technical support for qualified replacements if this specific part is unavailable.