Richtek RT7238 | Demoboard EVB_RT7238DGQUF

Description

The RT7238B/C/D is an advanced constant on-time (ACOT™) mode synchronous step-down converter. The main control loop of RT7238B/C/D using an advanced constant on-time (ACOT™) mode control which provides a very fast transient response. The RT7238B/C/D operates from 8V to 23V input voltage. For the RT7238D, the outputvoltage can be adjusted between 0.6V to 5V. The RT7238B/C/D is available in the UQFN-10L 3x3 (FC) package.

Features

• Advanced Constant On-Time (ACOT) Control
• 8V to 23V (RT7238B/C/D) Input Voltage Range @ 8A Output Current
• ACOT™ Mode Performs Fast Transient Response
• ACOT™ Architecture to Enable all MLCC Output Capacitor Usage
• Fixed 500kHz Switching Frequency
• High Efficient Internal Power MOSFET Switch 27mΩ (High-Side) and 10mΩ (Low-Side)
• Adjustable Output Voltage from 0.9V to 5V (RT7238D)
• Fixed 3.3V (RT7238B/D) or 5V (RT7238C) LDO Output Supplies 70mA
• Pre-biased Soft-Start Cycle-by-Cycle Over-Current Protection
• Input Under-Voltage Lockout
• Thermal Shutdown
• Output Over/Under-Voltage Protection

Typical applications

• Industrial and Commercial Low Power Systems
• LCD Monitors and TVs
• Computer Peripherals
• Green Electronics/Appliances
• Point of Load Regulation for High-Performance DSPs, FPGAs, and ASICs

More information

• Datasheet
• IC product information