LT1109CZ-5#PBF

Overview

The LT1109CZ-5#PBF is a micropower low-cost DC/DC converter manufactured by Analog Devices Inc. It utilizes a boost topology to step up input voltages ranging from 3 V to 12 V into a fixed 5 V output. The device supports an output current of 1.2 A and operates with a switching frequency of 120 kHz. Designed for surface-mount applications, it is housed in an 8-pin PDIP package. The component functions within a temperature range of 0°C to +70°C and includes shutdown capability to minimize power consumption.

Feature Summary

• Boost topology enables efficient voltage step-up conversion
• Micropower operation reduces overall system energy consumption
• Integrated shutdown mode allows for effective power management

Applications

• Battery-powered portable electronics requiring voltage boosting
• Flash memory programming voltage generation circuits
• General-purpose DC/DC conversion in industrial instrumentation

Procurement Notes

Verify the specific suffix and package type against official documentation to ensure compatibility with your design requirements. Confirm availability status through authorized distributors as supply levels may vary. Ensure compliance with relevant environmental standards such as RoHS before finalizing procurement decisions.

Selection Notes

Select this component when a fixed 5 V output is required from a higher input voltage source. Consider the 1.2 A output current limit and 120 kHz switching frequency for filter component sizing. Evaluate the PDIP package constraints if space is limited compared to SOIC alternatives.

Part Context

This part belongs to the LT1109 series of micropower DC/DC converters. It shares functional similarities with other members like the LT1109CS8 but differs in packaging and potentially pinout configuration. The series is designed for cost-sensitive applications requiring reliable voltage regulation.

Replacement Considerations

LT1109CS8-5#PBF offers similar electrical characteristics in a different package format.