LTC1147CS8-5#PBF

Overview

The LTC1147CS8-5#PBF is a high-efficiency step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 3.5 V to 16 V and provides a fixed 5 V output. The device supports up to 700 mA output current with a typical quiescent current of 160 uA. It functions at a switching frequency of 400 kHz and includes current limit and enable control features. Designed for through-hole or surface-mount applications in an 8-SOIC package, it operates between 0°C and +70°C.

Feature Summary

• High-efficiency buck switching regulator controller topology
• Integrated current limit and shutdown functionality
• Fixed 5 V output voltage configuration

Applications

• Battery-powered portable equipment
• Industrial control systems
• Communication infrastructure power supplies

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS adherence. Confirm the SOIC-8 package variant matches design requirements. Check manufacturer documentation for latest lifecycle status and environmental declarations before finalizing procurement specifications.

Selection Notes

Select this component when a fixed 5 V output is required from a 3.5 V to 16 V input source. Ensure external MOSFETs are rated for the 400 kHz switching frequency and 700 mA load. Verify thermal management capabilities for the operating temperature range of 0°C to +70°C.

Part Context

This part belongs to the LTC1147 series of high-efficiency DC/DC controllers. It complements other variants like the CN8 PDIP version and LT1108 family members, offering a compact surface-mount solution for step-down conversion tasks requiring precise voltage regulation and low standby power consumption.

Replacement Considerations

LTC1147CN8-5#PBF offers identical electrical performance in a PDIP-8 package.