KF15BD-TR

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

The KF15BD-TR is a low-dropout (LDO) linear voltage regulator manufactured by STMicroelectronics, part of the KF series. It provides a fixed positive output voltage of 5.0 V with a maximum output current of 500 mA. The device operates within an input voltage range of up to 20 V and features a typical dropout voltage of 200 mV at full load. It includes logic-controlled electronic shutdown functionality compatible with TTL levels. The regulator offers high supply voltage rejection of 70 dB and maintains stability with only a 2.2 μF output capacitor. It is housed in an SOIC-8 surface-mount package and supports operation from -40 °C to +125 °C.

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

• Logic-controlled electronic shutdown for power management
• Very low dropout voltage for efficiency
• High supply voltage rejection ratio
• Internal thermal and current limiting protection

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

• Battery-powered systems requiring low quiescent current
• Low noise analog circuit power supplies
• Industrial control local regulation
• Portable electronic devices

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

Verify the specific suffix BD indicates the 5.0 V fixed output variant and TR denotes tape-and-reel packaging. Confirm RoHS compliance status through official manufacturer documentation prior to integration. Ensure the SOIC-8 footprint matches your PCB layout requirements. Cross-reference the datasheet revision date to ensure alignment with current design specifications and safety standards.

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

Select this component when a fixed 5 V rail is required with minimal external component count. The 500 mA output capability suits moderate load applications. The inclusion of a shutdown pin allows for system-level power saving modes. Verify that the input voltage does not exceed the 20 V maximum rating under all operating conditions.

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

This part belongs to the KF series of very low drop voltage regulators with inhibit functions. The series is designed for low power and low noise applications, particularly in battery-operated equipment. Other variants in the family offer different fixed output voltages such as 2.5 V, 3.3 V, and 8 V, sharing similar package options and protection features.

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

Direct substitutes include other KF series LDOs with identical 5.0 V output and SOIC-8 packaging, provided they share the same pinout and electrical characteristics. Verify compatibility of the shutdown logic threshold and thermal performance before substitution.