LT1109CN8#PBF

Overview

The LT1109ACN8#PBF is a micropower DC/DC converter manufactured by Analog Devices Inc., designed for applications such as flash memory VPP generation. It operates in a boost topology with an adjustable output voltage and supports an input voltage range from 2 V to 9 V. The device delivers an output current of 1 A and features a switching frequency of 120 kHz. It has a static current consumption of 360 uA and includes a shutdown function. The component is housed in an 8-pin PDIP package and is rated for operation between 0°C and +70°C.

Feature Summary

• Micropower DC/DC converter architecture optimized for low quiescent current consumption
• Integrated boost topology capable of generating high voltages from low input sources
• Adjustable output voltage configuration for flexible system requirements
• Includes shutdown functionality to minimize power usage during inactive periods

Applications

• Flash memory VPP generator circuits
• PCMCIA Type I or Type II card internal power systems
• Battery-powered devices requiring efficient step-up conversion
• Portable equipment utilizing micropower DC/DC conversion

Procurement Notes

Verify the specific suffix against official Analog Devices documentation to confirm pinout and electrical characteristics, as variations may exist within the LT1109 family. Ensure the procurement channel provides valid RoHS compliance data and authentic manufacturer traceability. Cross-reference the part number with the latest datasheet revision to confirm operational temperature ranges and package integrity before finalizing orders.

Selection Notes

Select this component when designing systems that require a simple boost converter with minimal external components. It is suitable for applications needing an adjustable output voltage derived from a 2 V to 9 V input source. Consider the 120 kHz switching frequency and 1 A output capability for moderate power needs. Verify that the through-hole PDIP-8 package aligns with the target PCB layout constraints and assembly methods.

Part Context

The LT1109 series belongs to Analog Devices' portfolio of micropower switching regulators. These devices are engineered to provide efficient DC/DC conversion with reduced standby currents. The CN8 variant specifically denotes the through-hole PDIP-8 packaging option, distinguishing it from surface-mount alternatives like the SOT-23 packages found in other series members.

Replacement Considerations

Consult official Analog Devices substitution guides for verified equivalents. Generic replacements may not match the specific micropower characteristics or pin configurations required for direct integration into existing flash memory VPP generator designs.