XC9243 Datasheet | Torex Semiconductor

DESCRIPTION 対応 The XC9242/XC9243 series is a group of synchronous-rectification step-down DC/DC converters with a built-in 0.11Ω Pchannel MOS driver transistor and 0.12Ω N-channel MOS switching transistor, designed to allow the use of ceramic capacitors. The small on-resistances of these two internal driver transistors enable a high efficiency, stable power supply with an output current up to 2A. The XC9242/XC9243 series has operating voltage range of 2.7V~6.0V and a 0.8V (±2.0%) reference voltage, and using externally connected resistors, the output voltage can be set freely from 0.9V. With an internal switching frequency of 1.2MHz or 2.4MHz, small external ponents can be used. The XC9242 series is PWM control, and the XC9243 series is PWM/PFM, which automatically switches from PWM to PFM during light loads and provides high efficiency, high load response, low voltage ripple, can be achieved over a wide range of load conditions. The integrated CL discharge function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge switch located between the LX and VSS pins. Due to CL discharge function, malfunction on LX is prevented when Stand-by mode. - APPLICATIONS - Smart phones / Mobile phones - Bluetooth - Mobile devices / terminals - Portable game consoles - Digital still cameras / Camcorders - FEATURES Driver Transistor Input Voltage Range Output Voltage Setting FB Voltage High Efficiency Output Current Oscillation Frequency Maximum Duty Cycle Functions Output Capacitor Control Methods Operating Ambient Temperature Packages Environmentally Friendly : 0.11Ω P-ch Driver Transistor 0.12Ω N-ch Switching Transistor : 2.7V ~ 6.0V : 0.9V ~ VIN : 0.8V ± 2.0% : 95% : 2.0A : 1.2MHz±15%, 2.4MHz±15% : 100% : Soft-Start CL Discharge Current Limit Circuit（automatic return） Thermal Shutdown UVLO : Low ESR Ceramic Capacitor : PWM control (XC9242) PWM/PFM Auto (XC9243) : -40℃ ~ 85℃ : USP-10B, SOP-8FD : EU Ro HS pliant, Pb Free -...