LT1507CN8-3.3#PBF

Overview

The LT1507CN8-3.3#PBF is a monolithic buck mode switching regulator manufactured by Analog Devices Inc., housed in an 8-pin PDIP package. It operates as a positive, fixed-output DC-DC converter providing 3.3V at up to 1.5A output current. The device features a fixed switching frequency of 500kHz and accepts input voltages ranging from 4V to 16V. Designed for surface-mount or through-hole integration depending on the specific variant suffix, it supports adjustable output configurations within its family, though this specific part number denotes a fixed voltage setting. The component complies with RoHS3 standards and functions within a junction temperature range of 0°C to 100°C.

Feature Summary

• Integrated monolithic buck topology for efficient step-down voltage conversion
• Fixed 500kHz switching frequency enabling compact external component sizing
• Built-in shutdown capability for power management optimization
• Robust thermal performance supporting high junction temperatures

Applications

• Point-of-load regulation for digital logic circuits
• Battery-powered systems requiring efficient voltage stepping
• General-purpose DC-DC conversion in industrial equipment

Procurement Notes

Verify the exact suffix against official Analog Devices documentation to confirm pinout compatibility and electrical specifications. Ensure the procurement channel sources genuine components to avoid counterfeit risks. Confirm that the PDIP-8 package matches your PCB footprint requirements. Check for any recent product change notices regarding material composition or manufacturing site changes.

Selection Notes

Select this component when a fixed 3.3V output is required from a 4V to 16V input source. Consider the 1.5A current limit for load requirements. Evaluate the 500kHz frequency against EMI constraints and inductor size preferences. Compare thermal dissipation capabilities in the target application environment against the specified junction temperature limits.

Part Context

The LT1507 belongs to Analog Devices' line of high-efficiency switching regulators. It complements other parts like the LT1507CS8 (SOIC package) and LT1507IN8 (Industrial temp range). The CN8 suffix typically indicates commercial temperature range and PDIP packaging. This family focuses on cost-effective, single-inductor buck solutions for moderate current applications.

Replacement Considerations

LT1507CN8#PBF serves as a base variant without the fixed 3.3V suffix. LT1507IS8#PBF offers industrial temperature range in SOIC package.