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XC9217 Dataheets PDF



Part Number XC9217
Manufacturers Torex Semiconductor
Logo Torex Semiconductor
Description (XC9215 - XC9217) 500mA Synchronous Step-Down DC/DC Converters
Datasheet XC9217 DatasheetXC9217 Datasheet (PDF)

GO-Compatible Synchronous Step-Down DC/DC High Efficiency :92% Low Ripple Voltage :10mV Output Current :500mA (VIN=3.0V, VOUT=1.8V)* Oscillation Frequency :600kHz, 1.2MHz www.DataSheet4U.com PWM Fixed Control :(XC9215 series) PWM/PFM Automatic Switching Control :(XC9216 series) Manual Selection of Switching Control :(XC9217 series) Maximum Duty Ratio :100% Ceramic Capacitor Compatible Ultra Small Packages :SOT-25, USP-6B APPLICATIONS Mobile phones (PDC, GSM, CDMA, IMT200 etc.) Bluetooth equipm.

  XC9217   XC9217



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GO-Compatible Synchronous Step-Down DC/DC High Efficiency :92% Low Ripple Voltage :10mV Output Current :500mA (VIN=3.0V, VOUT=1.8V)* Oscillation Frequency :600kHz, 1.2MHz www.DataSheet4U.com PWM Fixed Control :(XC9215 series) PWM/PFM Automatic Switching Control :(XC9216 series) Manual Selection of Switching Control :(XC9217 series) Maximum Duty Ratio :100% Ceramic Capacitor Compatible Ultra Small Packages :SOT-25, USP-6B APPLICATIONS Mobile phones (PDC, GSM, CDMA, IMT200 etc.) Bluetooth equipment PDAs Portable communication modem Portable games Cameras Digital cameras Cordless phones Notebook computers FEATURES P-ch Driver Tr. Built-in :ON resistance 0.6 N-ch Synchronous Driver Tr. Built-in :ON resistance 0.7 Input Voltage Range :2.0 ~ 6.0V Output Voltage Range :0.9V~4.0V (100mV increments) High Efficiency :92% (TYP.) (VIN=3.0V, VOUT=1.8V, IOUT=100mA)* Output current :500mA (VIN=3.0V, VOUT=1.8V)* Oscillation Frequency :600kHz, 1.2MHz (Fixed frequency accuracy 15%) Ultra Small Packages :SOT-25 USP-6B Soft-start circuit built-in Current limiter circuit built-in (constant current & latching) Low ESR ceramic capacitor compatible * Performance depends on external components and wiring on the PCB. GENERAL DESCRIPTION The XC9215/9216/9217 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 to be configured using only a coil and two capacitors connected externally. Minimum operating voltage is 2.0V. Output voltage is internally programmable in a range from 0.9V to 4.0V in increments of 100mV (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 XC9215 series is PWM control, the XC9216 series is automatic PWM/PFM switching control and the XC9217 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 U.V.L.O. (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 (100 mW), are available. TYPICAL PERFORMANCE CHARACTERISTICS Effciency vs. Output Current XC9217A18C 100 L=3.3 H(CDRH3D16), CIN=4.7 F(ceramic), CL=10 F(ceramic), T opr=25 TYPICAL APPLICATION CIRCUIT VIN CIN (ceramic) CE/MODE L 1 2 3 VIN VSS CE/ VOUT MODE Lx 5 VOUT (500mA) CL (ceramic) Efficiency:EFFI(%) 90 80 70 60 50 40 30 20 10 0 0.1 1 10 100 Output Current:IOUT(mA) 1000 PWM /PFM Automatic Switching Control PWM Control VIN=5.0V VIN=3.6V VIN=2.7V 4 679 XC9215/9216/9217 Series PIN CONFIGURATION SOT-25 (TOP VIEW) www.DataSheet4U.com USP-6B (BOTTOM VIEW) * Please short the VSS pin (pin no. 2 and 5) before use. Please use the circuit without connecting the heat dissipation pad. If the pad must be connected due to a problem of heat dissipation or mounting intensity, connect to the VSS pin (pin no. 5). PIN CONFIGURATION PIN NUMBER SOT-25 USP-6B 1 6 2 2, 5 3 4 4 3 5 1 PIN NAME VIN VSS CE / MODE VOUT Lx FUNCTION Power Input Ground Chip Enable / Mode Switch Output Voltage Sense Switching Output PRODUCT CLASSIFICATION Ordering Information XC9215 XC9216 XC9217 DESIGNATOR PWM fixed control PWM / PFM automatic switching control PWM fixed control PWM / PFM automatic switching, manual switching SYMBOL A B C D 09 ~ 40 6 C M D R L DESCRIPTION : CE input logic High Active, CE pin open (Standard) : CE input logic Low Active, CE pin open (Semi-custom) : CE input logic High Active, Pull-down resistor built-in (Semi-custom) :CE input logic Low Active, Pull-up resistor built-in (Semi-custom) : 100mV increments e.g. VOUT = 1.5V : 600kHz : 1.2MHz : SOT-25 (SOT-23-5) : USP-6B : Embossed tape, Standard feed : Embossed tape, Reverse feed = 1, =5 DESCRIPTION Type of DC/DC Converter Transistor Built-In, Output Voltage Internally Set (VOUT Product), Soft Start Internally Set, Current Limit 700mA Output voltage Oscillation Frequency Package Device Orientation 680 XC9215/9216/9217 Series PACKAGING INFORMATION SOT-25 www.DataSheet4U.com USP-6B 2.0 + 0.15 (0.45) 0.5+0.1 (0.05) O (0.27) (0.27) 0.005 +0.002 1 1 2 3 6 5 4 1.8+0.15 (0.27) ( (0.45) (0.45) (0.125) 45 O O 45 45 O 45 A 0.45) A' O +0.15 (0.65) -0.05 0.7+0.03 1 A - A Cross Sectional View 4 5-0.2+0.05 3 2 0.5+0.1 0.5+0.1 1.6+0.15 5 * Pin no. 1 is thicker than other pins. 0.2+0.05 1 1.0+0.1 1 .


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