XCL224A183D2-G

XCL223/XCL224 Series ETR28012 004 HiSAT-COT 0.7A Inductor Built-in Step-Down micro DC/DC Converters Green Operation Compatible GENERAL DESCRIPTION The XCL223/XCL224 series is a synchronous step-down micro DC/DC converter which integrates an inductor and a control IC in one tiny package (2.25mm1.5mm, h=0.75mm). 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 applications that require an internally fixed output voltage (0.8V to 3.6V). The XCL223/XCL224 series uses synchronous rectification at an operating frequency of 3.0MHz. The XCL223/XCL224 series uses HiSAT-COT synchronous rectification. HiSAT-COT+PWM control (XCL223) or HiSAT-COT+automatic PWM/PFM switching control (XCL224) 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=L, 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 PGND 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 Note Book PC Output Voltage : 0.8V ~ 3.6V (2.0%) Tablet PC Oscillation Frequency : 3.0MHz Output Current : 700mA Mobile phone Efficiency : 88% (VIN=5.0V, VOUT=3.3V/300mA) Wearable Device Control Methods : HiSAT-COT Optical Device 100% Duty Cycle PWM (XCL223) PWM/PFM (XCL224) Circuit Protection : Thermal Shut Down Current Limit Circuit (Drop) Short Circuit Protection Functions : Soft-Start Circuit Built-In UVLO CL Discharge Output Capacitor : Low ESR Ceramic Capacitor Operating Ambient : -40~ 105 Temperature Package : USP-8B04 Environmental Friendly : EU RoHS Compliant, Pb Free TYPICAL PERFORMANCE TYPICAL APPLICATION CIRCUIT CHARACTERISTICS XCL223A333D2/XCL224A333D2(V =3.3V) OUT 100 XCL224 VIN V PGND IN 80 CIN L AGND X VOUT VCE 60 CE V OUT CL 40 L2 L1 XCL223 20 Vin=5.0V 0 0.1 1 10 100 1000 Output Current : I mA OUT 1/18 Efficiency : EFFI % XCL223/XCL224 Series BLOCK DIAGRAM Inductor L1 L2 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 PGND CE Thermal Shutdown Generator VOUT PWM/PFM Selector * The XCL223 offers a fixed PWM control, a Control Logic of PWM/PFM Selector is fixed at PWM internally. The XCL224 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 XCL223 - PWM XCL224 - PWM/PFM Automatic switching control DESIGNATOR ITEM SYMBOL DESCRIPTION Type A Output Current : 700mA 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) D2-G USP-8B04 (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 CL AUTO- CURRENT SOFT- THERMAL OUTPUT TYPE SHORT UVLO VOLTAGE DISCHARGE LIMIT START SHUTDOWN CURRENT PROTECTION A Fixed Yes Yes Yes Yes Fixed Yes 700mA 2/18