STMicroelectronics Adjustable DC-DC Buck Regulator 5.5V-48V 3A HSOP-8

This adjustable DC-DC switching buck step-down regulator from STMicroelectronics is engineered to deliver up to 3A of DC current to the load, depending on application conditions. The high current capability is supported by the HSOP-8 package with an exposed frame, which reduces the thermal resistance down to approximately 40°C/W, ensuring efficient heat dissipation during operation.

The device features an internal N-channel DMOS transistor with a typical RDS(on) of 200mΩ, minimising the size of the external components required. An internal oscillator fixes the switching frequency at 850kHz, while the output voltage can be set starting from 1.22V. Safety and reliability are prioritised with a power good open collector output that validates the regulated voltage, alongside a pulse-by-pulse current limit that offers effective constant current short-circuit protection. Current foldback further decreases overstress in persistent short-circuit conditions.

Key Features

• Operating input voltage range: 5.5V to 48V
• 850kHz internally fixed switching frequency
• Internal soft-start and current mode architecture
• Embedded compensation network
• Zero load current operation and internal current limiting
• Inhibit function for zero current consumption
• 2mA maximum quiescent current over the temperature range
• Thermal shutdown protection

Please note: This is an ESD sensitive device; proper precautions must be taken while handling.