LT1303IN8-5#PBF

Overview

The LT1303IN8-5#PBF is a micropower step-up DC/DC converter manufactured by Analog Devices Inc. in an 8-lead PDIP package. It operates with an input voltage range of 1.8V to 6V and provides a fixed regulated output of 5V at up to 200mA. The device utilizes Burst Mode operation for high efficiency, drawing only 120µA quiescent current from the battery source. A dedicated shutdown pin reduces standby current to 10µA. Integrated features include a low-battery detector with open-collector output and an on-chip NPN power switch with low saturation voltage.

Feature Summary

• Burst Mode operation ensures high efficiency in small, low-voltage battery-powered systems
• Integrated low-battery detector provides an open-collector output signal when input voltage drops below a preset level
• On-chip NPN power switch delivers high current capability with minimal saturation voltage loss
• Shutdown control pin significantly reduces quiescent current consumption during inactive periods

Applications

• Small battery-operated portable electronic devices
• Low-voltage system power management requiring step-up conversion
• Applications necessitating low-battery status monitoring
• Micropower DC/DC conversion for sensor nodes or remote modules

Procurement Notes

Verify component authenticity through authorized Analog Devices distributors or certified partners. Confirm package integrity and lead condition upon receipt. Cross-reference datasheet revision numbers to ensure compatibility with design specifications. Check for RoHS compliance documentation if required by project regulations. Validate part marking against official manufacturer identification standards.

Selection Notes

Select this component for designs requiring fixed 5V output from single-cell lithium or alkaline batteries. Consider the PDIP-8 package for through-hole assembly requirements. Evaluate thermal performance based on ambient operating conditions within the specified temperature range. Ensure input voltage remains within the 1.8V to 6V operational window for stable regulation.

Part Context

This part belongs to the LT1303 series of micropower high-efficiency DC/DC converters. The IN8 suffix indicates a plastic dual in-line package suitable for through-hole mounting. The -5# designation specifies a fixed 5V output version, distinguishing it from adjustable variants. This family targets applications where space constraints and battery life are critical design factors.

Replacement Considerations

LT1303CS8-5#TR offers the same electrical characteristics in an SOIC-8 surface-mount package. LT1303IS8-5#TR provides equivalent functionality in industrial temperature grade with SOIC-8 packaging. Verify pinout compatibility and thermal dissipation differences when transitioning between package types.