onsemi

MC33063AVDR2G

The MC33063A is a high-efficiency, step-down (buck) switching regulator that uses a constant-off-time, fixed-frequency, current-mode control scheme. It is available in a thermally enhanced PowerSSO-8 package.

Features:

• Wide input voltage range: 4.5V to 40V
• Fixed 350kHz switching frequency
• Synchronous rectification with internal high-side and low-side MOSFETs
• Low quiescent current of 150µA
• Adjustable output voltage down to 0.9V
• Short-circuit protection
• Thermal shutdown protection
• Enable/disable function
• Package: PowerSSO-8

Applications:

• General purpose step-down converter
• Power supply for portable devices
• Power supply for automotive electronics
• Power supply for LED lighting

The MC33063A is a highly efficient and flexible step-down regulator that can be used in a wide range of applications. Its low quiescent current and high efficiency make it well-suited for battery-powered devices, while its fixed switching frequency and synchronous rectification help reduce EMI and improve efficiency. The adjustable output voltage and enable/disable function also make it a versatile choice for a variety of power supply needs.