SC339SKTRT

Overview

The SC339SKTRT is an ultra-low output voltage linear FET controller manufactured by Semtech, belonging to the SC33 series. It provides a single positive adjustable output ranging from 500 mV to 3.3 V with a maximum output current of 20 mA. The device operates within an input voltage range of 4.5 V to 5.5 V and features a reference voltage of 500 mV. Quiescent current is specified at 130 uA, with load regulation at 1%. It supports surface-mount installation in a SOT-23-6 package and functions reliably across an operating temperature range of -40 C to +85 C.

Feature Summary

• Ultra-low output voltage capability for specialized power management applications
• Adjustable output voltage control via external components
• Low quiescent current consumption for efficiency optimization

Applications

• Power systems requiring precise low-voltage regulation
• Embedded circuits utilizing FET control architectures
• Portable devices with strict space constraints

Procurement Notes

Verify component authenticity through authorized channels due to discontinued status. Confirm RoHS compliance details before integration. Ensure supply chain stability as availability may be limited. Validate datasheet specifications against specific design requirements. Check for alternative sourcing options if original manufacturing support has ceased.

Selection Notes

Select this component when ultra-low output voltages below standard LDO limits are required. Consider the 20 mA output current limit for load capacity. Evaluate the SOT-23-6 package size for PCB layout compatibility. Assess the 4.5 V minimum input voltage constraint against system power rails. Verify thermal performance within the specified operating temperature range.

Part Context

This part belongs to Semtech's SC33 series of power management integrated circuits. It serves as a linear regulator solution distinct from switching regulators like the SC189 or SC202A. The device complements other Semtech PMIC offerings by addressing niche low-voltage regulation needs.

Replacement Considerations

No public confirmed substitute part numbers are available.