STMicroelectronics

LK112M28TR  

Linear & Switching Voltage Regulators

LK112M28TR Description

The LK112M28TR is a linear regulator IC designed by STMicroelectronics, a leading manufacturer in the power management sector. This device offers a fixed output voltage of 2.8V and is capable of delivering a maximum output current of 150mA. It is housed in a compact SOT23-5 package, making it suitable for space-constrained applications. The regulator is designed to operate with an input voltage range up to 14V, ensuring compatibility with a variety of power sources.

The LK112M28TR features a low dropout voltage of 0.35V at 150mA, which enhances its efficiency and makes it ideal for battery-powered devices where input voltage may drop significantly. The regulator also boasts a quiescent current of only 250 µA, contributing to minimal power loss during operation. Additionally, it provides a power supply rejection ratio (PSRR) of 55dB at 400Hz, ensuring stable output voltage even under varying input conditions.

LK112M28TR Features

• Fixed Output Voltage: 2.8V, providing a stable power supply for sensitive electronic components.
• Maximum Output Current: 150mA, suitable for driving small to medium-sized loads.
• Low Dropout Voltage: 0.35V at 150mA, allowing efficient operation even with low input voltages.
• Low Quiescent Current: 250 µA, minimizing power consumption in standby mode.
• High PSRR: 55dB at 400Hz, ensuring minimal noise and ripple on the output voltage.
• Enable Control Feature: Allows for dynamic control of the regulator's operation, enhancing flexibility in power management.
• Protection Features: Over-current and over-temperature protection ensure robustness and reliability.
• Surface Mount Packaging: SOT23-5 package is ideal for compact and high-density designs.
• Compliance: ROHS3 compliant and REACH unaffected, ensuring environmental and regulatory standards are met.
• Moisture Sensitivity Level: MSL 1 (Unlimited), suitable for a wide range of manufacturing environments.

LK112M28TR Applications

The LK112M28TR is well-suited for a variety of applications where a stable and efficient power supply is required. Its low dropout voltage and high PSRR make it particularly ideal for battery-powered devices, such as portable electronics, wearable technology, and IoT devices. The compact SOT23-5 package also makes it suitable for applications where space is a constraint, such as in smartphones, tablets, and other handheld devices.

The enable control feature allows for dynamic power management, making it useful in systems that require power sequencing or sleep modes. The over-current and over-temperature protection features ensure that the regulator can operate reliably in various environmental conditions, making it suitable for industrial and automotive applications.

Conclusion of LK112M28TR

The LK112M28TR from STMicroelectronics is a versatile and efficient linear regulator designed for modern power management needs. Its low dropout voltage, high PSRR, and compact packaging make it an excellent choice for a range wide of applications, particularly in portable and space-constrained devices. Despite being marked as obsolete, the LK112M28TR remains a reliable option for engineers seeking a stable and efficient power supply solution. Its compliance with environmental and regulatory standards ensures that it meets the requirements of contemporary electronics manufacturing.

LK112M28TR Documents

Download datasheets and manufacturer documentation for LK112M28TR

Datasheets :

LK112xx      

HTML Datasheet :

LK112xx