LT3668EMSE#PBF

Overview

The LT3668EMSE#PBF is a power management IC featuring one synchronous buck converter and two low-dropout linear regulators. It operates from an input voltage range of 1.6V to 40V. The buck output provides up to 400mA, while each LDO delivers 200mA. Switching frequencies are adjustable between 250kHz and 2.2MHz. The device is housed in a 16-lead MSOP package with an exposed pad.

Feature Summary

• Integrates a high-efficiency synchronous buck regulator with dual low-dropout linear outputs for mixed-signal power requirements.
• Supports wide input voltage ranges suitable for single-cell lithium-ion or multi-cell battery applications.
• Features adjustable switching frequency to optimize efficiency and minimize external component size.

Applications

• Portable electronic devices requiring efficient battery-powered operation
• Industrial equipment with mixed analog and digital power needs
• Communication modules utilizing multiple voltage rails

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and thermal characteristics. Ensure compatibility with your PCB layout regarding the exposed pad thermal connection. Confirm RoHS compliance status through current manufacturer declarations before finalizing procurement plans.

Selection Notes

Select this component when space-constrained designs require integrated buck and LDO regulation. Evaluate the required output currents against the 400mA buck and 200mA LDO limits. Consider the operating temperature range and package thermal performance for your specific enclosure constraints.

Part Context

This part belongs to the LT3668 family of integrated power solutions. It combines switching and linear regulation technologies to reduce board area compared to discrete solutions. The design targets applications needing compact form factors with stable power delivery across varying load conditions.

Replacement Considerations

Consult official cross-reference lists for verified substitutes. Verify electrical parameters and pin configurations match exactly before substitution.