STMicroelectronics

A7985A

A7985A Description

The A7985A from STMicroelectronics is an adjustable buck regulator designed for high-performance power management applications. It features an adjustable output voltage ranging from 0.6V to 38V, making it highly versatile for various electronic systems. The regulator supports an input voltage range of 4.5V to 38V, ensuring compatibility with a wide array of power sources. With a maximum output current of 2A, the A7985A is capable of delivering substantial power to demanding loads. Its switching frequency is set at 250kHz, which balances efficiency and size considerations for the inductor and capacitor components.

The A7985A is housed in an 8HSOP package, suitable for surface-mount applications, and is designed for automotive-grade reliability. Despite its obsolescence status, it remains a robust choice for legacy systems and specific applications where its unique features are required. The regulator is REACH unaffected and RoHS3 compliant, adhering to stringent environmental and safety standards. It also has a moisture sensitivity level (MSL) of 3, indicating it can withstand up to 168 hours of exposure to moisture, making it suitable for environments with varying humidity levels.

A7985A Features

• Adjustable Output Voltage: The A7985A offers an adjustable output voltage range from 0.6V to 38V, providing flexibility to meet diverse power requirements.
• Wide Input Voltage Range: With an input voltage range of 4.5V to 38V, it can accommodate a variety of power sources, enhancing its versatility.
• High Output Current: Capable of delivering up to 2A of output current, the regulator is well-suited for applications requiring substantial power.
• Efficient Switching Frequency: The 250kHz switching frequency optimizes efficiency and component size, balancing performance and footprint.
• Automotive-Grade Reliability: Designed for automotive applications, the A7985A ensures high reliability and durability in demanding environments.
• Surface-Mount Compatibility: The 8HSOP package is ideal for surface-mount technology, facilitating integration into modern PCB designs.
• Environmental Compliance: The regulator is REACH unaffected and RoHS3 compliant, meeting industry standards for environmental sustainability.
• Moisture Resistance: With an MSL of 3, the A7985A can withstand up to 168 hours of moisture exposure, enhancing its robustness in various conditions.

A7985A Applications

The A7985A is particularly well-suited for applications that require a high degree of flexibility in output voltage and substantial power delivery. Its adjustable output voltage and wide input range make it ideal for automotive electronics, where varying power sources and load requirements are common. It is also suitable for industrial control systems, where precise voltage regulation and high current output are necessary for reliable operation.

In automotive applications, the A7985A can be used in electronic control units (ECUs), infotainment systems, and advanced driver-assistance systems (ADAS). Its ability to handle high current and maintain stability under varying load conditions ensures reliable performance in these critical systems. For industrial control, the regulator can power motor controllers, PLCs, and other high-power devices, providing stable and efficient power management.

Conclusion of A7985A

The A7985A from STMicroelectronics is a versatile and reliable buck regulator that offers adjustable output voltage and high current delivery. Its wide input voltage range, efficient switching frequency, and automotive-grade reliability make it a robust choice for demanding applications. Despite its obsolescence status, the A7985A remains a valuable component for legacy systems and specific applications where its unique features are essential. Its compliance with environmental standards and moisture resistance further enhance its suitability for diverse operating conditions. For applications requiring flexible and high-performance power management, the A7985A is an excellent choice.