Datasheet XD9267, XD9268 (Torex)

XD9267/XD9268 Series
3 6V Operation 600mA Synchronous Step-Down DC/DC Converters ETR05075-001 ☆AEC-Q100 Gr ade2 ■GENERAL DESCRIPTION The XC9268 series are 36V operation synchronous step-down DC/DC converter ICs with a built-in P-channel MOS driver transistor and N-channel MOS switching transistor. The XD9267 / XD9268 series has an operating voltage range of 3 V to 36 V, a switching f requency of 2.2 MHz, and the circuit scheme of synchronous rectification to be a highly efficient and stable power supply. An internal reference voltage source of 0.75 V is available, and the output voltage can be set to 1 V to 25 V by external resistors (RFB1 and RFB2). The soft-start time is internally set to 2.0ms (TYP.), but can be adjusted to set a longer time using an external resistor and capacitor. With the built-in UVLO function, the driver transistor is forced OFF when input voltage becomes 2.7V or lower. The output state can be monitored using the power good function. Over-current protection and thermal shutdown are built in as protection function, and it can be used safely even in the case of short circuit. Internal protection circuits include over current protection and thermal shutdown circuits to enable safe use. ■APPLICATIONS ■FEATURES ● Automotive Body Control Input Voltage Range : 3.0 ~ 36V (Absolute Max 40V) ●Automotive Infotainment Output Voltage Range : 1.0 ~ 25V ● Automotive accessories FB Voltage : 0.75V ± 1.5% ・ Drive recorder Oscillation Frequency : 2.2MHz ・Car-mounted camera Output Current : 600mA ・ETC Quiescent Current : 13.5μA (XD9268) ●Industrial Equipment Control Methods : PWM control(XD9267) : PWM/PFM Auto(XD9268) : Efficiency 88%@12V→5V,300mA Soft-start Time : Adjustable by RC Over Current Protection Protection functions : (Automatic Recovery) Thermal Shutdown Output Capacitor : Ceramic Capacitor Operating Ambient Temperature : - 40℃ ~ + 105℃ Packages : SOT-89-5 (Without Power Good) : USP-6C (With Power Good) Environmentally Friendly : EU RoHS Compliant, Pb Free ■TYPICAL APPLICATION CIRCUIT ■TYPICAL PERFORMANCE CHARACTERISTICS L VOUT VIN Lx CIN 2.2μF RFB1 CFB EN/SS FB CL R 10μF FB2 RPG GND PG 1/26