LTC1148CS-5#PBF

DC DC Switching Controllers Overview

The LTC1148CS-5#PBF is a high-efficiency synchronous step-down switching regulator manufactured by Analog Devices Inc. It operates with an input voltage range of 3.5 V to 20 V and provides a fixed 5 V output at up to 700 mA. The device features a 250 kHz switching frequency, 160 µA quiescent current, and 100% duty cycle capability for low dropout operation. Packaged in a 14-pin SOIC-N surface-mount format, it supports shutdown functionality and includes internal current limiting.

DC DC Switching Controllers Feature Summary

• Synchronous buck topology for enhanced efficiency
• Fixed 5 V output configuration
• Integrated current limit protection
• Shutdown control pin

DC DC Switching Controllers Applications

• Portable computer power supplies
• Hand-held equipment power management
• Battery-powered system regulation

DC DC Switching Controllers Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS status. Confirm the package type matches the 14-pin SOIC-N footprint required for your PCB layout. Ensure the input voltage range covers your system's maximum supply levels. Check for obsolescence notices or limited availability statuses from the manufacturer before finalizing procurement plans.

DC DC Switching Controllers Selection Notes

Select this component when a fixed 5 V output is required from a 3.5 V to 20 V input source. It is suitable for applications prioritizing high efficiency and compact size due to its synchronous design. Consider the 250 kHz frequency for balancing component size and noise. Verify that the 700 mA output current meets the load requirements without exceeding thermal limits in the SOIC-14 package.

DC DC Switching Controllers Part Context

This part belongs to the LTC1148 series of high-efficiency synchronous step-down regulators. It shares functional similarities with the non-synchronous LTC1147 but offers improved efficiency through synchronous rectification. The CS-5 variant specifically denotes the 5 V fixed output version in the commercial temperature range.

DC DC Switching Controllers Replacement Considerations

The LTC1147CN8-5#PBF is a related non-synchronous alternative. Substitution requires evaluating efficiency differences and package changes from PDIP to SOIC. No other direct public substitutes are confirmed.