LT1776IS8#PBF

Overview

The LT1776IS8#PBF is a high-efficiency buck switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 7.4 V to 40 V and delivers an adjustable output voltage up to 51 V. The device supports a maximum switch current of 560 mA and functions at a fixed switching frequency of 200 kHz. It features a shutdown pin for power management and operates within a temperature range of 0°C to +125°C. The component is housed in an 8-pin PDIP package.

Feature Summary

• Supports wide input voltage range from 7.4 V to 40 V
• Provides adjustable output voltage capability
• Includes shutdown functionality for power control

Applications

• Battery-powered systems requiring step-down conversion
• Industrial control power supplies
• General-purpose DC-DC regulation

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS status before procurement. Confirm the PDIP-8 package availability as surface mount alternatives may exist within the same family. Check manufacturer documentation for any recent PCN updates regarding material or packaging changes that might affect assembly processes.

Selection Notes

Select this component when a robust, through-hole buck regulator is required for inputs exceeding 7.4 V. The 560 mA output current suits moderate load applications. Ensure the 200 kHz frequency aligns with EMI constraints and inductor size requirements. Compare against the LT1377 if higher current or different topology is needed.

Part Context

This part belongs to the LT1776 series of monolithic step-down switching regulators. It shares functional similarities with the LT1176 but offers improved efficiency and wider input voltage tolerance. The IS8 variant specifically denotes the industrial temperature grade and SOIC/MSOP compatible footprint dimensions, though packaged here in PDIP.

Replacement Considerations

LT1176CN8#PBF: Similar buck topology but lower input voltage range (8V min) and different package.