STMicroelectronics

L9339-TR

L9339-TR Description

The L9339-TR is a general-purpose power driver IC designed by STMicroelectronics, featuring a low-side output configuration. This device is housed in a 20-pin SOIC package and is available in tape and reel (TR) format, making it suitable for surface-mount applications. The L9339-TR operates over a wide load voltage range of 4.5V to 32V and offers a 1:1 input-to-output ratio, ensuring efficient power delivery. With a typical on-state resistance (Rds On) of 1.7 ohms, this IC provides low power loss and high efficiency, making it ideal for applications requiring robust power management.

L9339-TR Features

• Output Configuration: Low Side
• Product Status: Not For New Designs
• REACH Status: REACH Unaffected
• RoHS Status: ROHS3 Compliant
• Moisture Sensitivity Level (MSL): 3 (168 Hours)
• ECCN: EAR99
• Switch Type: General Purpose
• Voltage - Load: 4.5V ~ 32V
• Ratio - Input:Output: 1:1
• Mounting Type: Surface Mount
• Rds On (Typ): 1.7Ohm
• Number of Outputs: 4
• Fault Protection: Over Temperature
• HTSUS: 8542.39.0001
• Package: Tape & Reel (TR)
• Interface: On/Off
• Base Product Number: L9339

The L9339-TR includes a status flag feature, which allows for monitoring and control of the power driver's operation. This feature enhances the reliability and safety of the system by providing real-time feedback on the device's status. Additionally, the over-temperature fault protection ensures that the IC operates within safe temperature limits, preventing thermal runaway and potential damage.

L9339-TR Applications

The L9339-TR is well-suited for a variety of applications where efficient power management and reliable operation are critical. Its wide load voltage range and low Rds On make it ideal for automotive, industrial, and consumer electronics applications. Specific use cases include:

• Automotive Systems: For driving relays, solenoids, and other actuators in automotive applications, where robustness and reliability are essential.
• Industrial Controls: In industrial automation systems, where the L9339-TR can drive various loads, such as motors and valves, with high efficiency and minimal power loss.
• Consumer Electronics: In devices requiring efficient power management, such as smart home appliances and portable electronics, where the low Rds On and fault protection features ensure long-term reliability.

Conclusion of L9339-TR

The L9339-TR from STMicroelectronics is a versatile power driver IC that offers a combination of high efficiency, robust fault protection, and reliable operation. Its low-side output configuration and wide load voltage range make it suitable for a broad range of applications. While it is not recommended for new designs, the L9339-TR remains a valuable component for existing systems where its unique features and performance benefits can be leveraged. The inclusion of a status flag and over-temperature protection further enhances its reliability and safety, making it a preferred choice for demanding power management applications.