Torex Semiconductor, Ltd. Voltage Regulators - DC DC Switching Regulators XC9237B08D4R-G

The XC9237B08D4R-G is a synchronous step-down DC/DC converter designed to provide a stable output voltage with high efficiency. It operates within an input voltage range of 2.0V to 6.0V and can deliver an output current of up to 600mA. The output voltage can be set externally from 0.9V to 6.0V using two resistors, or it can be fixed at 0.8V. The device features a built-in P-channel MOS driver transistor with a resistance of 0.42Oc and an N-channel MOS switching transistor with a resistance of 0.52Oc, allowing for efficient power conversion. The XC9237B08D4R-G supports both PWM control and automatic PWM/PFM switching modes, providing flexibility for various load conditions. It includes features such as a soft start function, current limiting, and an under-voltage lockout (UVLO) function to enhance reliability. The device is available in multiple package options, including SOT-25 and USP-6C, making it suitable for compact designs in applications such as mobile devices, Bluetooth products, and portable gaming consoles. The typical efficiency is around 92%, depending on external components and PCB layout.