XC9143/XC9144 Series ETR04027-001 18V 1.0A Synchronous Step-Up DC/DC Converters Green Operation-compatible GENERAL DESCRIPTION The XC9143/44 series is a synchronous step-up DC/DC converter that incorporates two driver transistors required for switching operation. The input voltage range can correspond to a wide range from a minimum of 1.3 V to a maximum of 16V. Built-in low on-resistance driver transistor enable to supply with output current up to 400mA (V =12V, V =5.0V). Regarding OUT IN XC9144, since PFM operation is performed automatically in low output current region, it can support the output power with high efficiency from light load to heavy load. Since compensation components required for stable operation are built in, it is unnecessary to select external components or perform constant design for phase compensation. Additionally, since each protection function, limit value, etc. are adjusted internally, it is possible to reduce the number of external parts required for operation. Because the on-board package is compact as USP-6C, it contributes to reducing the occupied area together with a small number of parts. FEATURES APPLICATIONS Input Voltage Range : 1.3V ~ 16.0V Portable equipment Operation Start Voltage : 1.7V (TYP.) Beauty & health equipment Output Voltage Range : 7.0V ~ 18.0V Wearable devices FB Voltage : 1.0V (1.5%) Game & Hobby Oscillation Frequency : 1.2MHz, 3.0MHz (15%) PC Peripherals Efficiency : 90% VOUT=7V, VIN=3.3V, IOUT=200mA Devices with 2~10 Alkaline battery, 91% VOUT=12V, VIN=5.0V, IOUT=200mA Nickel Hydride battery, 88% VOUT=12V, VIN=3.3V, IOUT=100mA Output Current : 400mA V =7V, V =3.3V Ta=25 1~3 Lithium and Li-ion battery OUT IN 400mA V =12V, V =5.0V Ta=25 OUT IN 200mA V =12V, V =3.3V Ta=25 OUT IN Control Mode : PWM (XC9143 Series) Auto PWM/PFM (XC9144 Series) Protection Circuits : Input Current Limit : Thermal Shutdown Functions : Inrush Current Prevention Capacitor : Ceramic Capacitor Operating Ambient Temperature : -40 ~ 105 Package : USP-6C (1.8 x 2.0 x 0.6mm) Environmentally Friendly : EU RoHS Compliant, Pb Free TYPICAL PERFORMANCE TYPICAL APPLICATION CIRCUIT CHARACTERISTICS : : XC9143/XC9144 fosc=1.2MHz : V =7.0V OUT : L=4.7H(XGL4030-472ME), C = 10F x 4 L : C XC9143/XC9144 BST V OUT 0.1F : BST V OUT L : R CFB 2.2H V R IN FB1 : LX FB C FB : C L C IN 10F x 4 : 4.7F OFF ON EN GND V =1.7V IN : R FB2 V =3.3V IN V =4.2V IN V =4.5V IN solid line :XC9143B10C dotted line :XC9144B10C 1/35 XC9143/XC9144 Series BLOCK DIAGRAM V OUT Internal Regulator BST High Side Driver Voltage Current Reference LX Sense Current Limit Start-Up Control Phase Compensation Low Side Driver PWM/PFM FB Control Error AMP PWM Comparator Logic Thermal Ramp Shutdown Wave Chip Low Input EN GND Enable Start-Up Control * Diodes inside the circuits are ESD protection diodes and parasitic diodes. * XC9143 series support only PWM control. 2/35