XC6221 Series ETR0328 011 GENERAL DESCRIPTION The XC6221 series is a high accuracy, low noise, high speed, low dropout CMOS regulator with high ripple rejection. The series includes a reference voltage source, an error amplifier, a current limiter, and a phase compensation circuit. The CE function enables the entire circuit to be in stand-by state by inputting low level signal. As for the XC6221B/D stand-by mode, the electric charge at the output capacitor (C ) will be discharged by the internal auto-discharge switch, and as a result L the V pin quickly returns to the V level. The output stabilization capacitor (C ) is also compatible with low ESR ceramic OUT SS L capacitors. Output voltage is selectable in 0.05V increments within a range of 0.80V~5.00V, using the laser trimming technology set in factory. The current limiter s fold-back circuit also operates as a short circuit protection and an output current limiter at the output pin. The series achieves a fast response with only 25A of low power consumption. Also the series has low dropout voltage characteristics, which is 80mV at I =100mA and V =3.0V. OUT OUT With the use of small USP-4 and ultra small USPN-4 packages, a small footprint circuit can be designed. FEATURES APPLICATIONS Output Current : 200mA <Up to 250mA (TYP.)> Cellular phones Dropout Voltage : 80mV I =100mA,V =3.0V OUT OUT Operating Voltage Range : 1.6V ~ 6.0V Cordless phones Output Voltages : 0.80V~5.00V (0.05V increments) Accuracy : +2% (V >1.50V) (Standard) OUT Wireless communication equipment +30mV (V 1.45V) (Standard) OUT +1% (V >2.00V) (High Accuracy) OUT Portable games +20mV (V 1.95V) (High Accuracy) OUT Low Power Consumption : 25A (TYP.) Cameras, VCRs Stand-by Current : Less than 0.1A High Ripple Rejection : 70dB 1kHz Portable AV equipment Operating Temperature : -40~85 Low ESR Capacitor : 1.0F ceramic capacitor PDAs CL High-Speed Auto-Discharge (XC6221B/D) CE Pin internally pulled-down Low Output Noise Packages : USP-4, SOT-25, SSOT-24 USPN-4 Environmentally Friendly : EU RoHS Compliant, Pb Free TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS Load Transient Response XC6221x182 V =V =2.8V , Tr=Tf=5s IN CE Ta=25 , C =C =1.0F (ceramic) IN L 1.9 300 Output Voltage 1.8 250 1.7 200 1.6 150 Output Current 100mA 1.5 100 1.4 50 10mA 1.3 0 Time: (500s/div) 1/26 Output Voltage: V (V) OUT Output Current: IOUT (mA) XC6221 Series PIN CONFIGURATION V NC OUT V V IN OUT 5 4 4 3 V 2 3 CE SS V 1 4 V OUT IN 1 2 1 2 3 CE V SS V V CE IN SS SSOT-24 SOT-25 USP-4 (TOP VIEW) (TOP VIEW) (BOTTOM VIEW) V 2 3 CE SS V 1 4 V OUT IN USPN-4 (BOTTOM VIEW) *It is recommended that the heat dissipation pad of the USP-4 package is soldered by using the reference mount pattern and metal mask pattern for mounting strength. The mount pattern should be electrically opened or connected to the V (No.2) SS pin. PIN ASSIGNMENT PIN NUMBER PIN NAME FUNCTIONS USP-4 SOT-25 SSOT-24 USPN-4 4 1 4 4 V Power Input IN 1 5 3 1 V Output OUT 2 2 2 2 V Ground SS 3 3 1 3 CE ON/OFF Control - 4 - - NC No Connection 2/26