LTC1148HVCN#PBF

DC DC Switching Controllers Overview

The LTC1148HVCN#PBF is a high-efficiency synchronous step-down switching regulator from Analog Devices, housed in an 8-pin PDIP package. It operates with an input voltage range of 3.5V to 20V and delivers up to 700mA output current. The device features a fixed 250kHz switching frequency and low quiescent current of 160µA. It includes shutdown functionality and supports operation temperatures from -40°C to +85°C.

DC DC Switching Controllers Feature Summary

• Synchronous rectification for enhanced conversion efficiency
• Integrated high-side and low-side power switches
• Fixed internal switching frequency reduces external component count
• Shutdown pin enables significant reduction in supply current

DC DC Switching Controllers Applications

• Portable computers and handheld equipment power supplies
• Battery-powered systems requiring high efficiency
• General-purpose DC-DC step-down conversion
• Industrial control systems with wide input voltage ranges

DC DC Switching Controllers Procurement Notes

Verify the specific suffix '#PBF' indicates lead-free compliance and RoHS adherence when sourcing. Confirm the 'HV' designation matches the required high-voltage input specifications for your circuit design. Ensure the PDIP-8 through-hole package aligns with your PCB layout constraints. Cross-reference the manufacturer's latest datasheet for any potential obsolescence notices or alternate package options.

DC DC Switching Controllers Selection Notes

Select this component when a robust through-hole solution is required for high-efficiency buck conversion. The 700mA output capability suits moderate load applications where surface-mount alternatives are unsuitable. Consider the 250kHz frequency for balancing size and EMI. Verify that the 20V maximum input voltage covers your system's peak supply conditions without exceeding ratings.

DC DC Switching Controllers Part Context

This part belongs to the LTC1148 family of high-efficiency synchronous buck regulators. It shares architectural similarities with other members like the LTC1147 but offers integrated power switches for simplified design. The HV variant specifically supports wider input voltage ranges compared to standard versions, making it suitable for automotive or industrial bus applications.

DC DC Switching Controllers Replacement Considerations

Direct replacements include the LTC1148HVIS#PBF for surface mount needs or the LTC1148HVCN-5#PBF for fixed 5V output variants. Verify pin compatibility and thermal performance when substituting. Check if the target application requires adjustable output voltage rather than fixed configurations.