OM71163 is a synchronous buck converter that supports an input voltage range of 2.5V to 5.5V. It can provide a maximum load current of 6A, a switching frequency of 1.2MHz, supports 100% duty cycle, and an output voltage adjustment range of 0.6V to VIN.
The device achieves high-efficiency operation through internal integrated low RDS(ON) power MOS, and adopts constant on-time (COT) control method to achieve fast load and line response and simplify loop stability design.
OM71163 supports operating mode selection through MODE/VCON. When the pin voltage is lower than 0.4V or floating, the device enters PFM mode under light load and medium load conditions. The device enters sleep mode under no-load or light load conditions, which can effectively reduce the device's quiescent current and power consumption under these conditions. When the pin voltage is higher than 1.4V, the device enters FPWM mode. Additionally, the device supports dynamic adjustment of the internal reference voltage via the MODE/VCON pin voltage, allowing output voltage changes without altering the external voltage divider resistor.
The device has multiple protection functions such as thermal shutdown, overvoltage protection, overcurrent protection, short circuit protection, and input undervoltage lockout to ensure its long-term reliable operation.
OM71163 adopts QFN2*3-12 package and has a rated junction temperature range of -40℃-125℃.
• Wide 2.5V to 5.5V Operating Input Range
• Adjustable Output Voltage from 0.6V to VIN
• 6A Continuous Output Current
• 1.2MHz Switching Frequency
• 40μA Quiescent Current
• Integrated 20mΩ/12mΩ Power MOSFETs
• External Mode Control
• Dynamic Voltage Supply
• 100% duty cycle
• Internal Soft-Start
• Over Current Protection
• Short circuit protection
• Input Under-Voltage Lockout
• Thermal Shutdown
• QFN2*3-12 Package
• Battery-Powered Applications
• Processor Power Supplies
• Storage (SSD, HDD)
FUNCTION
2.5V to 5.5V Input, 6A Output, Synchronous Step-Down Converter
PACKAGE
QFN2*3-12
