LT1300CN8#PBF

Overview

The LT1300CN8#PBF is a micropower high-efficiency step-up DC/DC converter manufactured by Analog Devices. It operates from an input voltage range of 2 V to 6 V and provides a fixed output voltage of either 3.3 V or 5 V, selectable via a logic-controlled input pin. The device delivers a maximum output current of 750 mA with a typical efficiency of 88%. It utilizes a 155 kHz internal oscillator for compact external component sizing and features a low saturation voltage switch. The unit is housed in an 8-pin PDIP package and supports through-hole mounting.

Feature Summary

• Integrated logic-controlled input allows selection between fixed 3.3 V or 5 V output levels without changing external components.
• Low saturation voltage switch design enables efficient power conversion even at low input voltages.
• Internal 155 kHz oscillator permits the use of small surface mount inductors and capacitors.
• Guaranteed operation down to 1.8 V input voltage maximizes energy extraction from battery sources.

Applications

• Portable devices requiring power conversion from two-cell battery inputs
• Battery-operated systems needing extended operating life through efficient voltage stepping
• Applications utilizing logic signals to control output voltage configuration

Procurement Notes

Verify the specific suffix and package type against the manufacturer's latest datasheet to ensure compatibility with assembly processes. Confirm RoHS compliance status as indicated in official documentation. Check for any recent product change notices regarding material declarations or manufacturing site updates before finalizing procurement specifications.

Selection Notes

Select this component when a fixed output voltage is required alongside logic-controllable configuration options. Ensure the application input voltage remains within the specified operational range to maintain guaranteed performance. Consider the through-hole packaging requirements if surface-mount alternatives are not suitable for the target PCB layout.

Part Context

This part belongs to the LT1300 series of micropower switching regulators designed for high-efficiency step-up applications. The series focuses on maximizing battery life in portable electronics by extracting energy efficiently at low input voltages. The CN8#PBF designation indicates a commercial temperature range variant in an 8-pin PDIP package.

FAQ

How is the output voltage selected?

The output voltage is selected using a logic-controlled input pin that allows the user to choose between fixed 3.3 V or 5 V outputs.

What is the minimum input voltage for guaranteed operation?

Operation is guaranteed down to an input voltage of 1.8 V, allowing for deeper battery discharge.