Torex Semiconductor, Ltd. Voltage Regulators - DC DC Switching Regulators XC9237C21D4R-G

The XC9237C21D4R-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 external resistors, or it can be fixed at various levels from 0.8V to 4.0V depending on the specific configuration. This regulator features a built-in 0.42Oc P-channel MOS driver and a 0.52Oc N-channel MOS switching transistor, allowing for the use of low ESR ceramic capacitors. The device supports multiple control methods, including manual switching between PWM and automatic PWM/PFM modes, which enhances performance across varying load conditions. It also includes a soft start function, current limiting, and an under-voltage lockout (UVLO) feature to protect against low input voltage conditions. The XC9237C21D4R-G is available in several package types, including SOT-25 and USP-6C, making it suitable for compact designs in applications such as mobile devices, Bluetooth devices, and portable gaming consoles. Its efficiency can reach up to 92%, making it a viable choice for power-sensitive applications.