LT8364IMSE#PBF

Overview

The LT8364IMSE#PBF is a current mode DC/DC converter featuring an internal 4A, 60V switch. It operates from a 2.8V to 60V input range and supports boost, SEPIC, or inverting topologies. The device offers a programmable switching frequency between 300kHz and 2MHz. It utilizes Burst Mode operation to achieve a quiescent current of 9μA while maintaining output ripple below 15mVP-P. The component is housed in a 16-lead MSOP package with an exposed pad and is rated for industrial temperatures from -40°C to 125°C.

Feature Summary

• Configurable as a boost, SEPIC, or negative output converter using a single feedback pin architecture
• Burst Mode operation ensures high efficiency at very low output currents with ultra-low static current consumption
• Integrated 4A, 60V power switch enables compact solution design with minimized external component count
• Programmable switching frequency allows optimization for size constraints and EMI mitigation via spread spectrum modulation

Applications

• Single-cell lithium-ion battery systems
• Multi-cell battery packs
• Automotive input power stages
• Telecommunications power rails
• Industrial power supply inputs

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the IMSE designation corresponds to the industrial temperature grade (-40°C to 125°C) and the 16-lead MSOP package variant. Ensure the ordering part number matches the exact manufacturer specification sheet to avoid confusion with other thermal grades or package options within the LT8364 family.

Selection Notes

Select this component when designing circuits requiring wide input voltage ranges up to 60V with high peak current capabilities. The adjustable frequency feature is critical for applications needing to bypass sensitive RF bands or optimize magnetic component sizes. Consider the exposed pad thermal performance for high-duty cycle operations and verify that the 4A switch rating aligns with the maximum inductor current requirements of the target topology.

Part Context

This part belongs to the LT8364 family of low IQ converters manufactured by Analog Devices. It shares core functionality with variants like the LT8364EDE and LT8364HDE but differs in package type and thermal rating. The IMSE version specifically targets industrial environments requiring robust performance across extended temperature ranges compared to commercial grade alternatives.

Replacement Considerations

Direct substitutes include LT8364EMSE#PBF (commercial temp), LT8364IDE#PBF (DFN package), and LT8364HDE#PBF (high temp DFN). Verify pin compatibility and thermal characteristics when swapping between MSOP and DFN packages within the same family.

FAQ

How does the LT8364 handle output ripple during light load conditions?

The device employs Burst Mode operation which reduces quiescent current to 9μA and maintains typical output ripple below 15mVP-P even at very low output currents.

What is the purpose of the BIAS pin on the LT8364?

The BIAS pin accepts a second input voltage to supply the INTV regulator, which increases overall system efficiency by reducing power dissipation within the IC.