XCL219/XCL220 Series ETR28010-002 HiSAT-COT Control 1.0A Inductor Built-in Step-Down micro DC/DC Converters Green Operation Compatible GENERAL DESCRIPTION The XCL219/XCL220 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in one tiny package (2.0mm2.5mm, h=1.0mm). An internal coil simplifies the circuit and enables minimization of noise and other operational trouble due to the circuit wiring. A wide operating voltage range of 2.5V to 5.5V enables support for appl ications that require an internally fixed output voltage (0.8V to 3.6V). The XCL219/XCL220 series uses synchronous (*) rectification at an operating frequency of 3.0MHz. The XCL219/XCL220 series uses HiSAT-COT synchronous rectification. HiSAT-COT+PWM control (XCL219) or HiSAT-COT+automatic PWM/PFM switching control (XCL220) can be selected. The series have a high speed soft-start as fast as 0.3ms in typical for quick turn-on. With the built-in UVLO function, the internal P-channel driver transistor is forced OFF when input voltage becomes 2.0V or lower. When CE=Low, the integrated CL discharge function which enables the electric charge at the output capacitor CL to be discharged via the internal discharge switch located between the LX and VSS pins. The power consumption will be less than 1.0A. (*) HiSAT-COT is a proprietary high-speed transient response technology for DC/DC converter which was developed by Torex. It is Ideal for the LSI s that require high precision and high stability power supply voltage. FEATURES APPLICATIONS Input Voltage : 2.5V ~ 5.5V Output Voltage : 0.8V ~ 3.6V(2.0%) Note Book PC Oscillation Frequency : 3.0MHz Output Current : 1.0A Tablet PC Efficiency : 93% (VIN=5.0V, VOUT=3.3V/300mA) Control Methods : HiSAT-COT SSD(Solid State Drive) 100% Duty Cycle HiSAT-COT+PWM (XCL219) HiSAT-COT+PWM/PFM (XCL220) Mobile phone Circuit Protection : Thermal Shut Down Current Limit Circuit (Drop) Digital still camera Short Circuit Protection (Latch) Functions : Soft-start Circuit Built-in Portable game machine UVLO CL Discharge Output Capacitor : Low ESR Ceramic Capacitor Operating Ambient Temperature : -40 ~ +105 Package : CL-2025-02 Environmental Friendly : EU RoHS Compliant, Pb Free TYPICAL PERFORMANCE TYPICAL APPLICATION CIRCUIT CHARACTERISTICS XCL219/XCL220 (VOUT=3.3V) 100 7 XCL220 80 1 Lx 6 V IN CIN 4.7F 60 AGND PGND 5 2 CL 1.0A 10 F 3 V CE 4 OUT 40 XCL219 8 20 V =5.0V IN 0 0.1 1 10 100 1000 Output Current : I (mA) OUT 1/20 Efficiency : EFFI (%) XCL219/XCL220 Series BLOCK DIAGRAM L1 L2 Inductor Short VOUT Protection R1 CFB High Side Current Limit VIN Phase Compensation R2 Error Comparator Amp. AGND S Synch Q Logic Buffer Lx Drive R Vref with Soft Start CE Control Logic, Minimum UVLO On Time VIN CE Thermal Shutdown Generator PGND VOUT PWM/PFM Selector * The XCL219 offers a fixed PWM control, a Control Logic of PWM/PFM Selector is fixed at PWM internally. The XCL220 control scheme is a fixed PWM/PFM automatic switching, a Control Logic of PWM/PFM Selector is fixed at PWM/PFM automatic switching internally. Diodes inside the circuit are an ESD protection diode and a parasitic diode. PRODUCT CLASSIFICATION Ordering Information XCL219 - PWM XCL220 - PWM/PFM Automatic switching control DESIGNATOR ITEM SYMBOL DESCRIPTION Type B Refer to Selection Guide Output Voltage options e.g.)1.2V =1, =2 1.25V =1, =C Output Voltage 08 36 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 Oscillation Frequency 3 3.0MHz (*1) - Package (Order Unit) FR-G CL-2025-02 (3,000pcs/Reel) (*1) The -G suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant. Selection Guide LATCH or OUTPUT C AUTO- CHIP CURRENT SOFT- THERMAL L TYPE SHORT UVLO VOLTAGE DISCHARGE ENABLE LIMIT START SHUTDOWN PROTECTION B Fixed Yes Yes Yes Yes Yes Fixed Yes 2/20
