LT1173CN8-12#PBF

Overview

The LT1173CN8-12#PBF is a micropower fixed DC-DC converter manufactured by Analog Devices Inc. It operates as a switching voltage regulator with boost, buck, and inverting topologies. The device provides a fixed 12V output with a maximum switch current of 1.5A. Input voltage ranges from 2V to 30V depending on the configuration. It features a low operating supply current of 135uA and a switching frequency of 23kHz. The component is housed in an 8-pin PDIP package suitable for through-hole mounting.

Feature Summary

• Supports multiple conversion modes including step-up, step-down, and inverting configurations
• Delivers fixed output voltages of 5V or 12V with minimal external components
• Operates with low quiescent current for efficient micropower applications

Applications

• Telecommunications power supplies
• LCD bias generators
• Portable battery-powered instruments

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS status. Confirm the 8-PDIP package dimensions match the target PCB footprint. Ensure the 12V fixed output variant matches the circuit design requirements rather than the adjustable version.

Selection Notes

Select this part when a fixed 12V output is required from a variable input source between 2V and 30V. Consider the 1.5A peak switch current limit for load requirements. The 23kHz frequency allows for smaller passive components compared to higher-frequency alternatives.

Part Context

This component belongs to the LT1173 family of micropower DC-DC converters. The CN8 designation specifies the commercial temperature range and PDIP-8 package. The -12 suffix identifies the fixed 12V output version, distinguishing it from the 5V variant or adjustable versions within the same series.

Replacement Considerations

LT1173CN8-5#PBF serves as a direct substitute if a 5V output is acceptable instead of 12V. Other LT1173 variants may require verification of output voltage and package compatibility.