LT3502EMS#TRPBF

Overview

The LT3502EMS#TRPBF is a step-down switching regulator manufactured by Analog Devices Inc. It operates at fixed frequencies of 1.1MHz or 2.2MHz and provides a regulated output current of 500mA. The device integrates dual fault-protected LDOs for auxiliary power needs. It is housed in a compact 2mm x 2mm DFN package, suitable for surface-mount applications requiring high efficiency and small footprint in portable electronics.

Feature Summary

• Integrates dual low-dropout regulators with fault protection capabilities
• Operates at selectable switching frequencies of 1.1MHz or 2.2MHz
• Utilizes a compact 2mm x 2mm DFN package for space-constrained designs

Applications

• Portable battery-powered equipment
• Cellular phones and handheld devices
• Personal digital assistants (PDAs)

Procurement Notes

Verify the specific suffix configuration against the official datasheet to ensure correct frequency selection and package type. Confirm RoHS compliance status and lead times directly with authorized distributors, as availability may vary. Ensure the ordering part number matches the required pinout and thermal characteristics for your PCB layout.

Selection Notes

Select this component when a compact solution is required for stepping down voltage from higher rails to lower logic levels. The integrated LDOs simplify design by reducing external component count. Consider the 1.1MHz option for lower noise or the 2.2MHz option for smaller passive components based on board space constraints.

Part Context

This part belongs to the LT3502 family of monolithic switching regulators designed for high-efficiency DC/DC conversion. It combines a synchronous buck converter with linear regulators in a single chip. The series is optimized for applications where size and efficiency are critical, leveraging Linear Technology's expertise in power management ICs.

Replacement Considerations

LT3502EMS#PBF: Same function in tube packaging instead of tape and reel.