The L4938ND from STMicroelectronics is a highly integrated dual multifunction voltage regulator designed to provide a reliable power management solution for automotive and industrial applications. This versatile component is engineered to meet the stringent requirements of the automotive industry, offering both robustness and precision in voltage regulation.

Key Features

• Dual Voltage Output: The L4938ND provides two voltage outputs, with one fixed 5V output capable of delivering up to 500mA, and an adjustable output that can be set from 5V to 24V with external resistors, supplying up to 250mA.
• Low Dropout Voltage: The regulator features a low dropout voltage, ensuring efficient operation even when the input voltage is close to the output voltage, which is particularly useful in battery-operated systems.
• Thermal Protection: The device includes thermal shutdown circuitry that protects the IC from overheating, enhancing the reliability and longevity of both the regulator and the overall system.
• Short Circuit Protection: With built-in short-circuit protection, the L4938ND prevents damage to the power supply and the load in the event of a fault condition.
• Low Quiescent Current: The device is optimized for low quiescent current, making it suitable for applications where power efficiency is critical, such as in standby modes.

Applications

The L4938ND is ideal for a wide range of applications, including but not limited to:

• Automotive systems such as body controllers and instrument clusters
• Power supplies for microcontrollers and other sensitive electronics
• Industrial control systems requiring stable voltage supply

Package and Quality

The L4938ND is available in a 20-pin PowerSO20 package, which is designed to offer a compact footprint while ensuring adequate heat dissipation. The product is qualified to AEC-Q100 standards, reflecting its suitability for automotive applications where reliability and performance under harsh conditions are paramount.

With its combination of dual outputs, protection features, and low power consumption, the L4938ND from STMicroelectronics represents a versatile and dependable choice for advanced voltage regulation needs.