LTC3633AEFE-2

Voltage Regulators - DC DC Switching Regulators Overview

The LTC3633AEFE-2#PBF is a dual-channel monolithic synchronous step-down regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.6V to 20V and provides two adjustable output channels, each capable of delivering up to 3A. The device utilizes a controlled on-time, current-mode architecture with a switchable frequency between 500kHz and 4MHz. It features a 28-lead TSSOP package with an exposed pad for thermal management.

Voltage Regulators - DC DC Switching Regulators Feature Summary

• Dual-channel synchronous buck topology for independent power rail generation
• Current-mode control architecture with phase-lockable switching frequency
• Integrated low-side MOSFETs for high efficiency operation
• Thermal performance optimized via exposed pad surface mount package

Voltage Regulators - DC DC Switching Regulators Applications

• Portable equipment requiring multiple regulated voltage rails
• Industrial systems with single-supply architectures
• Embedded controllers needing sequenced power-up/down profiles
• Telecommunications infrastructure power distribution

Voltage Regulators - DC DC Switching Regulators Procurement Notes

Verify the suffix #PBF indicates lead-free RoHS compliance before ordering. Confirm the specific tape-and-reel or tube packaging requirements against your assembly line specifications. Ensure the 28-TSSOP-EP footprint matches your PCB layout exactly. Cross-reference the manufacturer's latest datasheet revision to confirm pinout consistency and electrical characteristics.

Voltage Regulators - DC DC Switching Regulators Selection Notes

Select this component when dual isolated outputs are required from a single input source. The wide input range supports various bus voltages. The adjustable frequency allows optimization for size versus efficiency. Verify that the total load current does not exceed the per-channel limits. Consider thermal dissipation requirements based on the voltage differential and load conditions.

Voltage Regulators - DC DC Switching Regulators Part Context

This part belongs to the LTC3633A family of high-efficiency dual synchronous buck regulators. It shares architectural similarities with other members like the LTC3633AEFE-1 and LTC3633AEFE-3, differing primarily in output configuration and fixed vs. adjustable settings. The family targets applications requiring compact, multi-rail power solutions.

Voltage Regulators - DC DC Switching Regulators Replacement Considerations

Direct substitutes include other LTC3633A variants such as LTC3633AEFE-1 or LTC3633AEFE-3, provided the output voltage requirements align. Verify pin compatibility and thermal characteristics when swapping within the series. Alternative families may require significant circuit redesign due to different control architectures.