LT8609AJDDM-5#PBF

Overview

The LT8609AJDDM-5#PBF is a synchronous step-down switching regulator from the LT8609A series, manufactured by Analog Devices Inc. It operates with an input voltage range of 3 V to 42 V and provides a fixed output voltage of 5 V. The device delivers a continuous output current of 2 A with a peak capability of 3 A. It features a switchable frequency range from 200 kHz to 2.2 MHz and maintains a low quiescent current of 2.5 µA. The component is housed in a 10-lead DFN package and supports operation temperatures from -40°C to +150°C.

Feature Summary

• Integrates Silent Switcher2 architecture with internal input capacitors to minimize electromagnetic interference radiation.
• Features a synchronous buck topology for efficient power conversion with high peak current capability.
• Includes a shutdown pin for power management control.

Applications

• Industrial systems requiring isolated or non-isolated DC-DC conversion
• Automotive electronics operating within wide input voltage ranges
• Point-of-load regulation for digital signal processors

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging when sourcing. Confirm the AJ grade matches required temperature and performance specifications. Check current availability status as distribution may vary. Ensure the DFN-10 footprint aligns with the target PCB design constraints before finalizing procurement orders.

Selection Notes

Select this part for applications requiring a fixed 5 V output from high-voltage inputs up to 42 V. The 2 A continuous current rating suits moderate load requirements where 3 A peaks are occasional. Consider the DFN-10 package size for space-constrained designs. Evaluate thermal performance at maximum load given the junction temperature limits.

Part Context

This component belongs to the LT8609A family of micropower synchronous buck regulators. It shares architectural similarities with other members like the LT8609S but offers specific electrical characteristics defined by its model number. The series is designed for high efficiency and low noise in compact form factors.

Replacement Considerations

LT8609AJDDM-5#TRPBF serves as the tape-and-reel alternative to the tube-packaged #PBF version. Verify that the functional specifications remain identical between packaging variants before substitution.