Richtek RT7272B | Demoboard RT7272BGSP

Description

The RT7272B is a high efficiency, current mode synchronous step-down DC/DC converter that can deliver up to 3Aoutput current over a wide input voltage range from 4.5V to 36V. The device integrates a 150mΩ high side and an 80mΩ low side MOSFET to achieve high conversion efficiency up to 95%. The current mode control architecture supports fast transient response and uses a simple compensation circuit.A cycle-by-cycle current limit function provides protection against a shorted output and an internal soft-start eliminates input surge current during start-up. The RT7272B provides complete protection functions such as inputunder voltage lockout, output under voltage protection, over current protection and thermal shutdown.The RT7272B is available in the thermal enhanced SOP-8 (Exposed Pad) package.

Features

• 4.5V to 36V Input Voltage Range

  -3A Output Current

• Internal N-MOSFETs
• Current Mode Control
• Fixed Frequency Operation : 500kHz
• Adjustable Output Voltage from 0.8V to 30V
• High Efficiency Up to 95%
• Stable with Low ESR Ceramic Output Capacitors
• Cycle-by-Cycle Current Limit
• Adjustable Current Limit

More information

• Datasheet
• IC product information