LTC1148HVCN-5#PBF

Overview

The LTC1148HVCN-5#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 5 V output with a maximum load current capability of 700 mA. The device features a 250 kHz switching frequency and maintains a low static current of 160 uA. Packaged in a 14-pin PDIP format, it supports operation across a temperature range of -40°C to +85°C. Key electrical specifications include a load regulation of 60 mV and a working supply current of 1.6 mA.

Feature Summary

• Synchronous buck topology for enhanced conversion efficiency
• Integrated shutdown control functionality
• Wide input voltage tolerance suitable for battery-powered systems

Applications

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

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm RoHS compliance status and lead-free characteristics prior to integration. Ensure the specific package variant matches design requirements. Review latest datasheet revisions for any updates to electrical parameters or recommended operating conditions.

Selection Notes

Select this controller for applications requiring high efficiency in space-constrained designs. The synchronous architecture minimizes heat buildup compared to non-synchronous alternatives. Consider the 14-pin PDIP package for prototyping or through-hole manufacturing needs. Evaluate thermal performance under maximum load conditions to ensure reliable operation within the specified temperature range.

Part Context

This component belongs to the LTC1148 series of high-frequency buck converters designed for portable electronics. It complements other variants like the LTC1148HVCS-5#TRPBF, differing primarily in packaging and shipping configuration. The series targets applications where minimizing power drain from input sources is critical for extending system battery life.

Replacement Considerations

Direct substitutes include the LTC1148HVIS-5#PBF for surface-mount implementations. Verify pin compatibility and thermal dissipation requirements when transitioning between package types. Cross-reference electrical specifications to ensure equivalent performance in the target application.