LT1303CN8-5#PBF

Overview

The LT1303CN8-5#PBF is a micropower high-efficiency step-up DC/DC converter manufactured by Analog Devices Inc. It operates in boost topology with a fixed 5 V output and supports up to 200 mA output current. The device accepts an input voltage range from 1.8 V to 6 V. Key electrical parameters include a quiescent current of 120 µA, a switching frequency of 155 kHz, and a shutdown feature that reduces current consumption. It is housed in an 8-lead PDIP package and functions within a temperature range of 0°C to +70°C.

Feature Summary

• Integrates a low-battery detector providing an open-collector output when input voltage drops below a preset level.
• Features an on-chip NPN power switch with low saturation voltage for efficient power conversion.
• Includes a shutdown pin to significantly reduce quiescent current consumption during inactive periods.

Applications

• Small battery-operated systems requiring high efficiency
• Low-voltage portable electronic devices
• Micropower DC/DC conversion applications

Procurement Notes

Verify the specific suffix #PBF indicates lead-free compliance and tube packaging. Confirm the CN8 variant corresponds to the PDIP-8 through-hole package rather than surface-mount options. Check manufacturer documentation for RoHS status details and ensure the fixed 5V output matches system requirements before procurement.

Selection Notes

Select this component for designs requiring a fixed 5V boost from a 1.8V to 6V source. The PDIP-8 package suits through-hole prototyping or manufacturing. Consider the LT1303CS8-5#PBF if surface-mount assembly is required instead. Ensure the 200mA output capability meets load demands without exceeding thermal limits.

Part Context

This part belongs to the LT1303 series of micropower high-efficiency DC/DC converters. It shares functional similarities with the LT1304 but differs in input voltage range and switching frequency. The LT1303 family is designed for small, low-voltage battery-operated systems, offering adjustable or fixed output voltages with integrated low-battery detection capabilities.

Replacement Considerations

LT1303CS8-5#PBF offers identical electrical specifications in a surface-mount SOIC-8 package. LT1303IS8-5#TR provides the same functionality in an industrial temperature grade SOIC-8 reel format. Verify pinout compatibility and thermal performance when substituting between package types.