Torex Semiconductor, Ltd. Voltage Regulators - DC DC Switching Regulators XC9237B3ACMR-G

The XC9237B3ACMR-G is a synchronous step-down DC/DC converter designed to deliver a maximum output current of 600mA. It operates within an input voltage range of 2.0V to 6.0V and features a fixed output voltage of 3.05V. This regulator incorporates 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 high efficiency, typically around 92%. The device 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 that disables the output when the input voltage drops below 1.4V. The XC9237B3ACMR-G is suitable for applications in mobile devices, including smartphones and portable game consoles, and is available in multiple package options, including SOT-25. Engineers considering this product should note its low quiescent current of 1.0OºA or less during standby, making it suitable for battery-powered applications.