Torex Semiconductor, Ltd. Voltage Regulators - DC DC Switching Regulators XC9245A1FC7R-G

The XC9245A1FC7R-G is a synchronous step-down DC/DC converter designed to deliver a maximum output current of 400mA. It features a built-in 0.65Ω P-channel MOS driver and a 0.45Ω N-channel MOS switching transistor, allowing for efficient operation with low ESR ceramic capacitors. The output voltage is adjustable from 0.8V to 4.0V in 0.05V increments, with an accuracy of ±2.0%. This device operates with a switching frequency of 1.2MHz, enabling the use of small external components. The XC9245 series employs PWM/PFM control, which automatically switches to PFM mode during light load conditions to enhance efficiency. In standby mode, the supply current is reduced to 1OºA or less. Additional features include a high-speed soft-start function (0.25ms typical), a built-in current limiter to prevent thermal damage, and an under-voltage lockout (UVLO) function that disables the output when the input voltage drops below 2.25V. The product is housed in a compact USPN-6 package, making it suitable for applications requiring a low profile and small footprint, such as smartphones, Bluetooth devices, and portable game consoles. The operating temperature range is -40°C to +85°C, and the device is compliant with EU RoHS standards.