KF50BDT-TR

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Overview

The KF50BDT-TR is a fixed-output linear low-dropout (LDO) voltage regulator manufactured by STMicroelectronics. It provides a fixed 5V output with a maximum continuous current of 500mA. The device supports an input voltage range up to 20V and features a typical dropout voltage of 0.4V at full load, with a maximum specified dropout of 0.7V at 500mA. Quiescent current is typically 1mA. It includes internal overcurrent and thermal shutdown protection. The component operates within a temperature range of -40°C to +125°C and is housed in a DPAK (TO-252-3) surface-mount package.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Feature Summary

• Very low dropout voltage capability for efficient power management
• Logic-controlled electronic shutdown function for standby power reduction
• Internal current limiting and thermal overload protection mechanisms
• Requires minimal external capacitance for circuit stability

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Applications

• Battery-powered systems requiring low quiescent current
• Low noise power supply stages in consumer electronics
• Industrial control boards utilizing local regulation
• Standby logic control circuits in embedded systems

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Procurement Notes

Verify the specific suffix 'BDT' confirms the DPAK package and tape-and-reel shipping format. Ensure the order quantity aligns with the manufacturer's standard reel size requirements. Confirm RoHS compliance status matches project specifications. Validate that the lead time accommodates production schedules, as manufacturing cycles may vary based on regional factory allocation.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Selection Notes

Select this component when a stable 5V rail is required with moderate current demands up to 500mA. The DPAK package offers superior thermal dissipation compared to smaller SOT packages. Consider the 20V absolute maximum input rating for compatibility with higher voltage bus systems. The inclusion of a shutdown pin allows for system-level power management integration.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Part Context

This part belongs to the KF series of very low drop regulators from STMicroelectronics. The series is characterized by low quiescent current and low dropout voltage, making it suitable for battery-operated applications. Other variants in the family offer different fixed output voltages such as 2.5V, 3.3V, and 8V, sharing similar functional architectures and protection features.

Voltage Regulators - Linear, Low Drop Out (LDO) Regulators Replacement Considerations

KF50BD-TR: Identical electrical specifications but packaged in an 8-SOIC format instead of DPAK.