3V to 5.5V, 4-Phase, Step-Down Converter with I²C Interface

The RTQ5756 series products are synchronous step-down converters with 4-phase capability, allowing for both multiphase and single-phase operations. These products offer a wide range of configuration options.The RTQ5756A provides triple outputs with 2+1+1 phase, while the RTQ5756B offers quad outputs with 1+1+1+1 phase. The RTQ5756C provides dual outputs with 3+1 phase, and the RTQ5756D offers a single output with 4-phase. Lastly, the RTQ5756E provides dual outputs with 2+2 phase. This flexibility and high integration make the RTQ5756 series suitable for various applications that require high current and compact power management solutions, such as low-power processors, I/O power, the core power of FPGA, DSP, and other ASICs. With an input voltage range of 3V to 5.5V, these converters are compatible with a wide variety of low voltage systems. They can deliver up to 20A peak current and support output voltages ranging from 0.4V to 1.55V. The RTQ5756 series products also offer programmable functions, including voltage level, voltage change slew rate, and soft-start slew rate, which can be controlled through an I²C interface operating at up to 3.4MHz. Additionally, these products support remote-sense function to ensure accurate output voltage under heavy loads. They are equipped with interrupt and fault-detection functions to report any error status. The RTQ5756 series products are available in a WL-CSP-54B 2.69x3.92 (BSC) package.The recommended junction temperature range is -40°C to 125°C. See Ordering Information for the key features of each part number.