LTC1148CN-3.3#PBF

Overview

The LTC1148CN-3.3#PBF is a high-efficiency synchronous step-down switching regulator controller manufactured by Analog Devices Inc. It operates within an input voltage range of 3.5 V to 20 V and provides a fixed output voltage of 3.3 V. The device supports up to 3 A output current with a switching frequency of 125 kHz. It features a 14-pin PDIP package, operates between 0°C and +70°C, and includes shutdown functionality.

Feature Summary

• Synchronous buck topology for enhanced efficiency
• Fixed 3.3 V output configuration
• Integrated shutdown control

Applications

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

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance per RoHS standards. Confirm the PDIP-14 package type matches your assembly requirements. Check current availability status as supply may be limited or subject to factory order constraints. Ensure the operating temperature range meets your environmental specifications.

Selection Notes

Select this component when a fixed 3.3 V output is required from a 3.5 V to 20 V input source. The 125 kHz frequency allows for compact passive components. Consider the PDIP-14 package for through-hole mounting needs. Verify that the 3 A current capability aligns with load demands.

Part Context

This part belongs to the LTC1148 series of high-efficiency synchronous buck converters. It is designed for applications requiring minimal power drain and heat buildup. The series targets portable and battery-operated systems where size and longevity are critical design factors.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Consult official Analog Devices resources for cross-reference data.