Torex XC9275

Description

The XC9275 series is a group of synchronous-rectification type DC/DC converters with a built-in 51mΩ P-channel MOS driver transistor and 49mΩ 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 3.0A. A 0.6V reference voltage source is incorporated, and the output voltage can be set freely by external resistors. Oscillation frequency is set to 1.2MHz or 3.0MHz can be selected for suiting to your particular application. The operation mode is HISAT-COT (*) control , allowing fast response, low ripple, and high efficiency over the full range of loads (from light loads to heavy loads).During stand-by, all circuits are shutdown to reduce current consumption to as low as 1.0μA or less. As for the soft-start function as fast as 0.25ms in typical for quick turn-on. Internal protection circuits include over current protection, short-circuit protection, and thermal shutdown circuits to enable safe use. Short-circuit protection is available only for B,C type. Hiccup mode is available only for D,E type. Soft-off function is available only for B, D type. The package is the SOP-8FD.

Features

Input Voltage Range : 2.7V～5.5VOutput Voltage Range : 0.8V～3.6VFB Voltage : 0.6V ± 1.0%Output Current : 3.0AOscillation Frequency : 1.2MHz, 3.0MHzEfficiency : 95%(VIN=5.0V, VOUT=3.3V, IOUT=1.0A)Control Methods : HiSAT-COT Control: 100% Duty Cycle: PWM Control (XC9274): PWM/PFM auto switching Control (XC9275)Protection Circuits : Thermal Shutdown: Current Limit (Pendent character):HICCUP(D,E Type)Short Circuit Protection(B,C Type)Functions :UVLO , Soft-Start:Soft-off(B,D Type): CL High Speed DischargeCapacitor :Ceramic CapacitorOperating Ambient Temperature : - 40℃ ～ + 105℃Package : SOP-8FDEnvironmentally Friendly : EU RoHS Compliant, Pb Free

More information

• Datasheet
• IC product information