STMicroelectronics

LD39030DTPU105R  

Linear & Switching Voltage Regulators

LD39030DTPU105R Description

The LD39030DTPU105R is a high-performance linear regulator designed by STMicroelectronics, offering a fixed output voltage of 1.05V with a maximum input voltage of 5.5V. This device is capable of delivering a continuous output current of 300mA, making it suitable for a wide range of low-power applications. The regulator features a low dropout voltage of 0.33V at 300mA, ensuring efficient operation even under low input-to-output voltage differentials. With a quiescent current of only 40 µA, it is optimized for low-power consumption, making it ideal for battery-powered devices.

The LD39030DTPU105R is housed in a compact 4DFN package, suitable for surface-mount applications, and is available in tape and reel packaging for automated assembly processes. The device is RoHS3 compliant and REACH unaffected, ensuring it meets the latest environmental and regulatory standards. It also features an enable control function, allowing for dynamic power management and reduced power consumption during standby modes.

LD39030DTPU105R Features

• Fixed Output Voltage: 1.05V, ensuring stable power supply for sensitive electronic components.
• High Input Voltage Range: Up to 5.5V, providing flexibility in input power sources.
• High Output Current Capability: 300mA, suitable for driving various loads.
• Low Dropout Voltage: 0.33V @ 300mA, enhancing efficiency in low-voltage applications.
• Low Quiescent Current: 40 µA, ideal for battery-operated devices and low-power systems.
• Enable Control Feature: Allows for dynamic power management and reduced power consumption during standby.
• Protection Features: Over-current and over-temperature protection, ensuring reliable operation under varying conditions.
• Soft Start: Prevents inrush currents during startup, protecting the circuit from transient overloads.
• High Power Supply Rejection Ratio (PSRR): 80dB to 55dB across 1kHz to 100kHz, ensuring clean output voltage.
• Moisture Sensitivity Level (MSL): Level 1 (Unlimited), suitable for a wide range of manufacturing environments.

LD39030DTPU105R Applications

The LD39030DTPU105R is well-suited for a variety of applications where stable, low-voltage power supply is required. Its low dropout voltage and high efficiency make it ideal for battery-powered devices, such as portable electronics, IoT devices, and wearable technology. The enable control feature allows for dynamic power management, making it suitable for systems that require low power consumption during standby or sleep modes.

Some specific use cases include:

• Portable Electronics: Smartphones, tablets, and other mobile devices that require stable power supply and low power consumption.
• IoT Devices: Sensors, actuators, and other IoT modules that operate on battery power and need efficient power management.
• Wearable Technology: Smartwatches, fitness trackers, and other wearable devices that demand compact and efficient power solutions.
• Medical Devices: Portable medical equipment, such as glucose meters and portable ECG devices, that require reliable and stable power supply.

Conclusion of LD39030DTPU105R

The LD39030DTPU105R from STMicroelectronics is a versatile and efficient linear regulator designed for low-power applications. Its combination of a fixed 1.05V output, low dropout voltage, and low quiescent current makes it an excellent choice for battery-powered devices. The enable control feature and comprehensive protection mechanisms ensure reliable operation and dynamic power management. With its compact 4DFN package and surface-mount compatibility, the LD39030DTPU105R is well-suited for modern, space-constrained designs. Whether for portable electronics, IoT devices, or wearable technology, the LD39030DTPU105R offers a reliable and efficient power solution that meets the demands of today's low-power applications.

LD39030DTPU105R Documents

Download datasheets and manufacturer documentation for LD39030DTPU105R

PCN :

Product Change Notification (PDF)