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XC9225 Dataheets PDF



Part Number XC9225
Manufacturers Torex Semiconductor
Logo Torex Semiconductor
Description Synchronous Step-Down DC/DC Converters
Datasheet XC9225 DatasheetXC9225 Datasheet (PDF)

XC9225/XC9226/XC9227 Series Synchronous Step-Down DC/DC Converters ETR0507_004 GreenOperation Compatible GENERAL DESCRIPTION The XC9225/XC9226/XC9227 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.6 P-channel driver transistor and 0.7 N-channel switching transistor, designed to allow the use of ceramic capacitors. The ICs enable a high efficiency, stable power supply with an output current of 500mA (A~D series) and 600mA (E~H series) to be configured usi.

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XC9225/XC9226/XC9227 Series Synchronous Step-Down DC/DC Converters ETR0507_004 GreenOperation Compatible GENERAL DESCRIPTION The XC9225/XC9226/XC9227 series is a group of synchronous-rectification type DC/DC converters with a built-in 0.6 P-channel driver transistor and 0.7 N-channel switching transistor, designed to allow the use of ceramic capacitors. The ICs enable a high efficiency, stable power supply with an output current of 500mA (A~D series) and 600mA (E~H series) to be configured using only a coil and two capacitors connected externally. Minimum operating voltage is 2.0V~6.0V (A~D series), 4.5V~5.5V (E~H series). Output voltage is internally programmable in a range from 0.9V to 4.0V (A~D series) and 3.0~4.0V (E~H series) in increments of 0.05V (accuracy: 2.0%). With the built-in oscillator, oscillation frequency is selectable from 600kHz and 1.2MHz to make available the frequency best suited to your particular application. As for operation mode, the XC9225 series is PWM control, the XC9226 series is automatic PWM/PFM switching control and the XC9227 series can be manually switched between the PWM control mode and the automatic PWM/PFM switching control mode, allowing fast response, low ripple and high efficiency over the full range of load (from light load to high output current conditions). The soft start and current control functions are internally optimized. During standby, all circuits are shutdown to reduce current consumption to as low as 1.0 A or less. With the built-in UVLO (Under Voltage Lock Out) function, the internal P-channel driver transistor is forced OFF when input voltage becomes 1.4V or lower. Two types of package, SOT-25 (250mW) and USP-6B (100mW), are available. APPLICATIONS Mobile phones (PDC, GSM, CDMA, IMT2000 etc.) Bluetooth equipment PDAs, Portable communication modem Portable games Cameras, Digital cameras Cordless phones Notebook computers FEATURES P-Ch Driver Tr. Built-In N-Ch DriverTr. built-in Input Voltage Range : ON resistance 0.6 : ON resistance 0.7 : 2.0V~6.0V (A~D series) Output Voltage Range 4.5V~5.5V (E~H series) : 0.9V~4.0V (A~D series) 3.0V~4.0V (E~H series) (0.05V increments) Low Power Consumption : 15 A (TYP.) (VIN=3.6V, VOUT=1.8V) Control Method : Fixed PWM (XC9225) PWM/PFM Automatic (XC9226) High Efficiency PWM/PFM Manual (XC9227) : 92% (TYP.) Output Current (VIN=3.0V, VOUT=1.8V, IOUT=100mA)* : 500mA *(A~D series) Oscillation Frequency Low Output Ripple Maximum Duty Ratio Soft-Start Circuit Built-In 600mA *(E~H series) : 600kHz, 1.2MHz ( 15%) : 10mV : 100% Current Limiter Circuit Built-In (Constant Current & Latching) Low ESR Ceramic Capacitor Compatible Packages : SOT-25 (SOT-23-5), USP-6B * Performance depends on external components and wiring on the PCB TYPICAL APPLICATION CIRCUIT V IN C IN ( c er amic ) CE/ MO DE 1 VIN Lx 5 2 VSS 3 CE/ MODE V OUT 4 L VOUT 500mA (600mA) CL ( c er amic ) Effic ienc y :EF F I( % ) TYPICAL PERFORMANCE CHARACTERISTICS Effici.


SUM74HC245 XC9225 XC9226


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