LT3668HMSE#PBF

Overview

The LT3668HMSE#PBF is a power management IC featuring one synchronous buck converter and two low-dropout linear regulators. It operates with an input voltage range of 1.6V to 40V. The buck output provides up to 400mA, while each LDO delivers 200mA. Switching frequency is adjustable from 250kHz to 2.2MHz. The device is housed in a 16-lead MSOP package with an exposed pad.

Feature Summary

• Integrates a high-efficiency synchronous buck converter alongside two precision LDOs for mixed-mode power distribution.
• Supports wide input voltage ranges suitable for battery-powered and single-rail supply applications.
• Features adjustable switching frequency to optimize efficiency and minimize electromagnetic interference.

Applications

• Portable electronic devices requiring efficient multi-rail power generation
• Industrial control systems utilizing single-supply architectures
• Embedded sensor nodes needing combined switching and linear regulation

Procurement Notes

Verify the specific suffix and tape-and-reel or tube packaging configuration against the manufacturer's current datasheet before ordering. Confirm that the exposed thermal pad requirements match your PCB layout guidelines to ensure proper heat dissipation and electrical connection.

Selection Notes

Select this component when a design requires both high-efficiency step-down conversion and precise linear regulation within a compact footprint. Evaluate the total output current capabilities against load requirements to ensure the buck and LDO channels can support the simultaneous peak currents without exceeding thermal limits.

Part Context

This part belongs to the LT3668 family of integrated power management solutions. It consolidates multiple regulator topologies into a single surface-mount package, reducing the overall bill of materials and board space compared to discrete implementations of separate buck and LDO components.

Replacement Considerations

LT3668IMSE#PBF