LT1109ACS8-12#PBF

Overview

The LT1109ACS8-12#PBF is a boost DC/DC converter manufactured by Analog Devices Inc. It operates within an input voltage range of 2 V to 9 V and provides a fixed output voltage of 12 V with a maximum output current of 1 A. The device features a switching frequency of 120 kHz and draws a static current of 360 uA. It supports shutdown functionality and functions within a temperature range of 0°C to +70°C. The component is housed in an SOIC-8 surface-mount package.

Feature Summary

• Boost topology for step-up voltage conversion
• Integrated shutdown control capability
• Fixed 12 V output configuration

Applications

• Flash memory VPP generation
• PCMCIA Type I or Type II card power supply

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and RoHS status. Confirm the SOIC-8 package dimensions match your PCB footprint requirements. Ensure the 12 V fixed output aligns with your circuit design, as other variants may offer adjustable outputs. Check official documentation for thermal management guidelines under full load conditions.

Selection Notes

Select this component when a fixed 12 V output is required from a low-voltage source between 2 V and 9 V. The 1 A output current capability suits moderate power applications. Consider the 120 kHz switching frequency for EMI constraints. Verify that the SOIC-8 package fits your assembly process and that the operating temperature range meets environmental specifications.

Part Context

This part belongs to the LT1109 series of microprocessor DC/DC converters. It is designed for battery-powered systems requiring efficient voltage boosting. The series includes variants with different output voltages and adjustable options. The ACS8-12 designation specifies the accuracy grade, package type, and fixed 12 V output setting.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation.