KF33BDT-TR

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

The KF33BDT-TR is a fixed-output low-dropout linear voltage regulator manufactured by STMicroelectronics. It provides a stable 3.3 V output with a maximum continuous current of 500 mA. The device operates within an input voltage range from -0.5 V to 20 V and maintains performance across an extended temperature range of -40 °C to +125 °C. Key electrical characteristics include a typical dropout voltage of 200 mV, a line regulation of 12 mV, and a load regulation of 50 mV. Quiescent current is specified at 500 μA in the active state. The component utilizes a TO-252-3 surface-mount package.

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

• Provides a fixed 3.3 V regulated output suitable for powering sensitive digital logic circuits
• Features very low dropout voltage operation to maximize efficiency under minimal headroom conditions
• Includes internal thermal overload protection and current limiting to safeguard against fault conditions

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

• Battery-powered portable electronic devices requiring efficient power management
• Low-noise analog and digital circuit supply rails
• Industrial control systems operating in harsh thermal environments

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

Verify the specific suffix 'TR' indicates reel packaging when sourcing components. Confirm that the TO-252-3 footprint matches the target PCB design. Ensure compliance with RoHS directives if required by the end product specifications. Cross-reference the manufacturer part number directly with official distributor catalogs to avoid counterfeit risks.

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

Select this component when a fixed 3.3 V rail is required with moderate current demands up to 500 mA. It is appropriate for designs prioritizing low quiescent current and high supply voltage rejection. Consider the thermal dissipation capabilities of the DPAK package relative to the expected load current and ambient temperature constraints.

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

This regulator belongs to the KF series of very low drop voltage regulators from STMicroelectronics. The series offers various output voltages and packages, including SO-8 and DPAK configurations. These devices are engineered for applications demanding low noise and low power consumption, featuring logic-controlled shutdown options in compatible variants.

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

KF50BDT: Provides a 5.0 V output instead of 3.3 V; verify voltage compatibility before substitution.