LT8604IDDBM#TRMPBF

Overview

The LT8604IDDBM#TRMPBF is a synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.2 V to 42 V and delivers up to 100 mA output current. The device features a fixed 5 V output, adjustable switching frequency from 200 kHz to 2.2 MHz, and ultra-low quiescent current of 1.7 uA. It supports shutdown functionality and functions within a temperature range of -40°C to +125°C. Packaged in a 10-DFN (3x2) surface-mount format, it integrates high-efficiency synchronous rectification for compact power management applications.

Feature Summary

• Synchronous buck topology ensures high conversion efficiency across the operating load range.
• Ultra-low static current consumption minimizes power loss during standby or light-load conditions.
• Integrated reverse battery protection capability safeguards against incorrect polarity connections.
• Adjustable switching frequency allows optimization for trade-offs between efficiency and external component size.

Applications

• Battery-powered portable electronic devices requiring extended operational life
• Industrial sensor nodes and IoT modules with strict power budget constraints
• Automotive infotainment systems and telematics units operating on 12V or 24V buses
• Medical instrumentation and diagnostic equipment needing low-noise regulated supplies

Procurement Notes

Verify the exact part number suffix matches #TRMPBF to ensure correct tape-and-reel packaging configuration. Confirm that the DDBM package variant aligns with your PCB footprint requirements. Check manufacturer documentation for moisture sensitivity level handling procedures prior to assembly. Ensure supply chain sources provide valid lot traceability and RoHS compliance certificates as required by your manufacturing standards.

Selection Notes

Select this component when input voltages reach up to 42 V but output current demands remain below 100 mA. Consider its fixed 5 V output if no feedback resistor network adjustment is needed. Evaluate the 10-DFN package dimensions against available board space constraints. Compare the 1.7 uA quiescent current against system sleep mode requirements to determine suitability for energy-harvesting or long-battery-life designs.

Part Context

This part belongs to the LT8604 family of high-efficiency synchronous buck regulators designed for space-constrained applications. It shares architectural similarities with other LT86xx series devices but offers specific pinout and thermal characteristics unique to the DDBM package. The IDDBM designation indicates industrial temperature grade performance, distinguishing it from commercial variants within the same product line.

Replacement Considerations

LT8604EDDBM#TRMPBF serves as a commercial grade alternative with identical electrical specifications but limited to 0°C to 70°C operation. LT8604HIDDBM#TRMPBF provides extended high-temperature capability up to 150°C junction temperature while maintaining the same functional interface and pin compatibility.