LT1109ACN8-12#PBF

Overview

The LT1109ACN8-12#PBF is a micropower DC/DC converter and flash memory VPP generator manufactured by Analog Devices Inc. It utilizes a boost topology to step up input voltages ranging from 2 V to 9 V into a regulated 12 V output. The device supports an output current of 1 A and operates with a switching frequency of 120 kHz. Designed for through-hole installation in a PDIP-8 package, it functions within a temperature range of 0°C to +70°C. Key electrical parameters include a maximum static current of 360 µA and a shutdown capability for power management.

Feature Summary

• Integrated boost DC/DC converter architecture optimized for generating high voltage from low input sources
• Dedicated functionality as a flash memory VPP generator for PCMCIA card applications
• Micropower operation with low quiescent current consumption for battery-powered systems
• Built-in shutdown control feature to manage power states effectively

Applications

• Flash memory VPP generation for PCMCIA Type I or Type II cards
• Battery-powered portable electronic devices requiring efficient voltage stepping
• Embedded systems needing isolated or boosted supply rails for specific components

Procurement Notes

Verify component authenticity through authorized distributors or direct manufacturer channels. Confirm the presence of the #PBF suffix to ensure lead-free compliance and RoHS adherence. Check datasheet revisions for any updates regarding thermal characteristics or pinout configurations before final integration. Ensure ordering specifications match the required PDIP-8 through-hole package variant.

Selection Notes

Select this component when a compact solution is needed to generate 12 V from a 2 V to 9 V source with up to 1 A load capacity. Consider the 120 kHz switching frequency for EMI management and filter design requirements. Evaluate the 360 µA static current against system standby power budgets. The PDIP-8 package is suitable for prototyping or applications where surface-mount space is not a constraint.

Part Context

This part belongs to the LT1109A series of micropower DC/DC converters. It is specifically engineered for applications requiring reliable voltage boosting in space-constrained environments. The series includes variants with different output voltages and packages, but this specific model targets the 12 V output requirement common in legacy memory interfaces.

Replacement Considerations

LT1109CS8-12: Surface mount SOIC-8 variant with identical electrical performance. LT1109ACS8-12: Automotive grade or enhanced specification SOIC-8 variant. Verify package compatibility and thermal dissipation requirements when substituting through-hole parts with surface-mount equivalents.