STMicroelectronics

LK115D33-TR

LK115D33-TR Description

The LK115D33-TR is a linear regulator IC designed by STMicroelectronics, a leading manufacturer in the electronics industry. This device is part of the Power Management (PMIC) category and is specifically tailored for applications requiring a stable and efficient power supply. The LK115D33-TR features a fixed output voltage of 3.3V and can deliver a maximum output current of 100mA. It is housed in an 8SO package and is available in a surface-mount configuration, making it suitable for compact and space-constrained designs.

LK115D33-TR Features

• Output Type: Fixed, ensuring a stable 3.3V output voltage.
• Input Voltage Range: Up to 20V, providing flexibility in input power sources.
• Output Current: Capable of delivering up to 100mA, suitable for low to medium power applications.
• Number of Regulators: Single regulator design simplifies system architecture.
• Output Configuration: Positive output polarity.
• Supply Current: Maximum of 3mA, contributing to low power consumption.
• Dropout Voltage: As low as 0.17V at 60mA (typical), enhancing efficiency at low input-to-output voltage differentials.
• Quiescent Current: 500µA, ensuring minimal power draw in standby mode.
• Power Supply Rejection Ratio (PSRR): 79dB to 57dB across the frequency range of 120Hz to 10kHz, providing excellent noise suppression.
• Protection Features: Over-current and over-temperature protection, safeguarding the device and connected circuits.
• Control Features: Enable function allows for dynamic control of the regulator's operation.
• Compliance: REACH Unaffected and ROHS3 Compliant, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), suitable for a wide range of manufacturing environments.
• Packaging: Tape & Reel (TR), facilitating automated assembly processes.

LK115D33-TR Applications

The LK115D33-TR is ideal for a variety of applications where a reliable and efficient power supply is crucial. Its low dropout voltage and high PSRR make it particularly suitable for battery-powered devices, portable electronics, and embedded systems where power efficiency and noise reduction are paramount. The enable function allows for dynamic power management, making it a versatile choice for applications that require power-saving modes or controlled startup sequences.

Conclusion of LK115D33-TR

The LK115D33-TR from STMicroelectronics stands out in the market for its combination of high efficiency, low dropout voltage, and robust protection features. Its fixed 3.3V output and 100mA current capability make it a reliable choice for a wide range of low to medium power applications. The inclusion of over-current and over-temperature protection ensures the longevity and reliability of the device in various operating conditions. Despite being marked as obsolete, the LK115D33-TR remains a valuable component for designers seeking a compact, efficient, and reliable linear regulator. Its compliance with environmental and regulatory standards further enhances its appeal for modern electronics manufacturing.