LT3971IMSE16#TRPBF

Overview

The LT3971IMSE16#TRPBF is a monolithic buck switching regulator from Analog Devices, designed for high-efficiency power conversion. It accepts an input voltage range of 4.3 V to 38 V and delivers up to 1.2 A output current. The device features an adjustable switching frequency ranging from 200 kHz to 2 MHz, allowing optimization for size or efficiency. It operates with a quiescent current of 2.8 µA during regulation and drops to 700 nA in shutdown mode. The output voltage is adjustable from 1.19 V to 30 V. It utilizes a 16-lead MSOP package with an exposed pad for thermal management.

Feature Summary

• Ultra-low quiescent current design maintains high efficiency at light loads while minimizing standby power consumption.
• Burst Mode operation ensures low output ripple and sustained efficiency across varying load conditions.
• Internally compensated current-mode topology provides fast transient response and stable loop performance.
• Integrated soft-start and power-good flag simplify system startup sequencing and monitoring.

Applications

• Industrial control systems requiring wide input voltage tolerance
• Battery-powered equipment needing extended operational life
• Embedded computing platforms with strict space constraints

Procurement Notes

Verify the specific suffix #TRPBF indicates tape-and-reel packaging when sourcing components. Confirm that the IMSE variant corresponds to the correct temperature grade and package dimensions required for your PCB layout. Cross-reference the manufacturer's latest datasheet to ensure compliance with RoHS standards and material declarations before finalizing procurement orders.

Selection Notes

Select this component when a wide input voltage range up to 38 V is necessary alongside compact form factor requirements. The adjustable frequency feature allows designers to optimize external component sizes based on specific application bandwidth needs. Ensure the thermal performance of the MSOP package aligns with the expected power dissipation levels in the target environment.

Part Context

This part belongs to the LT3971 family of step-down regulators, which are engineered for applications demanding low noise and high efficiency. The series includes various package options and fixed/adjustable voltage variants to suit diverse design architectures. It serves as a core power management solution within Analog Devices' portfolio for general-purpose DC-DC conversion tasks.

Replacement Considerations

LT3971EMSE16#PBF: Identical electrical specifications but differs in packaging format, utilizing tube rather than tape-and-reel delivery. LT3971IMSE#TRPBF: Similar family member; verify if the specific pinout and thermal characteristics match the 16-lead requirement of the target design.