LT1109ACS8-12#TRPBF

Overview

The LT1109ACS8-12#TRPBF 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 a typical quiescent current of 360 uA. It is housed in an SOIC-8 package and supports operation temperatures from 0°C to +70°C.

Feature Summary

• Boost topology for step-up voltage conversion
• Integrated shutdown control capability
• Surface-mount SOIC-8 packaging

Applications

• Flash memory VPP generation
• PCMCIA Type I or Type II card power supplies
• General purpose DC/DC conversion

Procurement Notes

Verify the specific suffix #TRPBF indicates tape and reel packaging, distinct from tube variants. Confirm the -12 suffix corresponds to the fixed 12 V output specification. Ensure compatibility with the required operating temperature range and package dimensions before integration.

Selection Notes

Select this component when a compact boost converter is needed for low-power applications requiring a stable 12 V rail from a lower input source. Consider the 120 kHz switching frequency for EMI management and the 1 A current limit for load requirements.

Part Context

This part belongs to the LT1109 series of simple, high-efficiency step-up DC/DC converters. It is designed for battery-powered applications where space and efficiency are critical constraints.

Replacement Considerations

LT1109CS8-12#PBF (Tube variant)

FAQ

What is the primary function of the LT1109ACS8-12#TRPBF?

It functions as a boost DC/DC converter that steps up input voltages between 2 V and 9 V to a fixed 12 V output.

Does the LT1109ACS8-12#TRPBF support shutdown mode?

Yes, the device includes a shutdown feature to reduce power consumption when not in use.