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XCL201 Dataheets PDF



Part Number XCL201
Manufacturers Torex Semiconductor
Logo Torex Semiconductor
Description Inductor Built-in Step-Down micro DC/DC Converters
Datasheet XCL201 DatasheetXCL201 Datasheet (PDF)

XCL201/XCL202 Series ETR28002-009 Inductor Built-in Step-Down “micro DC/DC” Converters ☆Green Operation Compatible ■GENERAL DESCRIPTION The XCL201/XCL201 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in one tiny package (2.5mm×2.0mm, h=1.0mm). A stable power supply with an output current of 400mA is configured using only two capacitors connected externally. Operating voltage range is from 2.0V to 6.0V. Output voltage is internally set in .

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XCL201/XCL202 Series ETR28002-009 Inductor Built-in Step-Down “micro DC/DC” Converters ☆Green Operation Compatible ■GENERAL DESCRIPTION The XCL201/XCL201 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in one tiny package (2.5mm×2.0mm, h=1.0mm). A stable power supply with an output current of 400mA is configured using only two capacitors connected externally. Operating voltage range is from 2.0V to 6.0V. Output voltage is internally set in a range from 0.8V to 4.0V in increments of 0.05V. The device is operated by 1.2MHz, and includes 0.42Ω P-channel driver transistor and 0.52Ω N-channel switching transistor. As for operation mode, the XCL201 series is PWM control, the XCL202 series is automatic PWM/PFM switching control, allowing fast response, low ripple and high efficiency over the full range of loads (from light load to heavy load). During stand-by, the device is shutdown to reduce current consumption to as low as 1.0μA or less. With the built-in UVLO (Under Voltage Lock Out) function, the internal driver transistor is forced OFF when input voltage becomes 1.4V or lower. The series provide short-time turn-on by the soft start function internally set in 0.25ms. The series integrate CL auto discharge function which enables the electric charge stored at the output capacitor CL to be discharged via the internal autodischarge switch located between the LX and VSS pins. When the devices enter stand-by mode, output voltage quickly returns to the VSS level as a result of this function. ■APPLICATIONS ●Mobile phones, Smart phones ●Bluetooth Headsets ●WiMAX PDAs, MIDs, UMPCs ●Portable game consoles ●Digital cameras, Camcorders ●SSD(Solid State Drive) ●PND(Portable Navigation Device) ■FEATURES Ultra Small : 2.5mm×2.0mm, h=1.0mm Input Voltage : 2.0V ~ 6.0V Output Voltage : 0.8V ~ 4.0V (±2.0%) High Efficiency : 92% (VIN=4.2V,VOUT=3.3V) Output Current : 400mA Oscillation Frequency : 1.2MHz (±15%) Maximum Duty Cycle : 100% Output Capacitor : Low ESR Ceramic Function : Current Limiter Circuit (Constant Current & Latching) Soft-Start Circuit Built-In CL Discharge Control Methods : PWM (XCL201) PWM/PFM Auto (XCL202) Operating Ambient Temperature : -40℃ ~ 85℃ Environmentally Friendly : EU RoHS Compliant, Pb Free ■TYPICAL APPLICATION CIRCUIT CL 10μF 400mA L1 LX VIN Vss Vss VOUT CE L2 CIN 4.7μF (TOP VIEW) * “L1 and LX”, and “L2 and VOUT” is connected by wiring. Efficency:EFFI(%) ■ TYPICAL PERFORMANCE CHARACTERISTICS XCL201B331BR/XCL202B331BR 100 XCL202(PWM/PFM) 80 60 VIN= 5.5V 40 5.0V XCL201(PWM) 20 4.2V 0 0.01 0.1 1 VOUT=3.3V 10 100 1000 Output Current:IOUT (mA) 1/22 XCL201/XCL202 Series ■BLOCK DIAGRAM L2 VOUT VIN VSS Inductor Phase Compensation R1 CFB FB Error Amp. R2 VSHORT Current Feedback Current Limit PWM Comparator Logic Synch Buffer Drive Vref with Soft Start, CE PWM/PFM Selector UVLO Cmp R3 UVLO Ramp Wave Generator OSC CE/ CE R4 Control Logic L1 Lx VSS CE NOTE: The XCL201 offers a fixed PWM control, a signal from CE Control Logic to PWM/PFM Selector is fixed to "L" level inside. The XCL202 control scheme is PWM/PFM automatic switching, a signal from CE Control Logic to PWM/PFM Selector is fixed to "H" level inside. The diodes placed inside are ESD protection diodes and parasitic diodes. ■PRODUCT CLASSIFICATION ●Ordering Information XCL201①②③④⑤⑥-⑦(*1) Fixed PWM control XCL202①②③④⑤⑥-⑦(*1) PWM / PFM automatic switching control DESIGNATOR ITEM SYMBOL DESCRIPTION ① Functions selection B CL auto discharge, High speed soft-start ②③ Output Voltage 08 ~ 40 Output voltage options e.g. 1.2V → ②=1, ③=2 1.25V → ②=1, ③=C 0.05V increments : 0.05=A, 0.15=B, 0.25=C, 0.35=D, 0.45=E, 0.55=F, 0.65=H, 0.75=K, 0.85=L, 0.95=M ④ ⑤⑥-⑦ Oscillation Frequency Package (Order Unit) 1 BR-G(*2) ER-G(*3) 1.2MHz CL-2025 (3,000pcs/Reel) CL-2025-02 (3,000pcs/Reel) (*1) The “-G” suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant. (*2) BR-G is storage temperature range "-40℃ ~ 105℃”. (*3) ER-G is storage temperature range "-40℃ ~ 125℃". 2/22 ■PIN CONFIGURATION XCL201/XCL202 Series VIN 6 Vss 5 CE 4 L1 7 1 Lx 2 Vss 3 VOUT 8 L2 (BOTTOM VIEW) * It should be connected the VSS pin (No. 2 and 5) to the GND pin. * If the dissipation pad needs to be connected to other pins, it should be connected to the GND pin. * Please refer to pattern layout page for the connecting to PCB. ■PIN ASSIGNMENT PIN NUMBER 1 2,5 3 4 6 7 8 PIN NAME Lx VSS VOUT CE VIN L1 L2 FUNCTIONS Switching Output Ground Output Voltage Chip Enable Power Input Inductor Electrodes ■ABSOLUTE MAXIMUM RATINGS PARAMETER VIN Pin Voltage LX Pin Voltage VOUT Pin Voltage CE Pin Voltage LX Pin Current Power Dissipation (Ta = 25℃) Operating Ambient Temperature Storage Temperature (*.


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