LT1300CS8#PBF

Overview

The LT1300CS8#PBF is a micropower high-efficiency step-up DC/DC converter manufactured by Analog Devices Inc. It operates from an input voltage range of 1.8 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 features a boost topology with a maximum output current capability of 700 mA. Key electrical parameters include a low quiescent current of 120 uA and an internal switching frequency of 155 kHz. It is housed in an 8-lead SOIC package and is rated for operation within a temperature range of 0°C to +70°C.

Feature Summary

• Features a low saturation voltage switch capable of delivering up to 1 A peak current.
• Includes a logic-controlled input pin to select between 3.3 V or 5 V fixed output voltages.
• Incorporates a 155 kHz internal oscillator to minimize external component size.
• Supports operation down to 1.8 V input voltage to maximize battery energy extraction.

Applications

• Portable devices powered by two-cell battery inputs
• Battery-powered systems requiring efficient step-up conversion
• Applications necessitating low quiescent current operation

Procurement Notes

Verify the specific suffix and marking on the component to confirm it matches the LT1300CS8#PBF designation. Ensure the selected unit corresponds to the SOIC-8 package type and meets the required operating temperature range. Cross-reference the manufacturer's datasheet for any recent product change notifications or environmental compliance updates prior to integration into final designs.

Selection Notes

Select this component when designing circuits that require a simple, high-efficiency boost converter from a single or dual-cell battery source. It is suitable for applications where space constraints favor small surface-mount inductors due to the 155 kHz switching frequency. Consider the logic-controlled output selection feature if system design requires flexibility between 3.3 V and 5 V rails without changing passive components.

Part Context

This part belongs to the LT1300 series of micropower switching regulators. It is designed as a cost-effective solution for portable electronics, offering high efficiency across a wide load range. The series is characterized by its ability to operate at very low input voltages, making it ideal for extending battery life in consumer and industrial handheld devices.

Replacement Considerations

Consult official substitution guides for compatible parts within the LT1300 family or equivalent boost converters from Analog Devices. Verify pin compatibility and electrical specifications before replacing existing designs.