XC6221 Series ETR0328 015 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 25 A 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 Maximum Output Current : 200mA <Up to 250mA (TYP.)> Smart phones / Mobile phones Dropout Voltage : 80mV I =100mA,V =3.0V OUT OUT Operating Voltage Range : 1.6V ~ 6.0V Portable game consoles Output Voltage Range : 0.80V~5.00V (0.05V increments) Accuracy : +2% (V >1.50V) (Standard) OUT Digital still cameras / Camcorders +30mV (V 1.45V) (Standard) OUT +1% (V >2.00V) (High Accuracy) OUT Digital audio equipments +20mV (V 1.95V) (High Accuracy) OUT Low Power Consumption : 25 A (TYP.) Mobile devices / terminals Stand-by Current : Less than 0.1 A High Ripple Rejection : 70dB 1kHz CE Function : CE Active High Standby current below 0.1 A C High-Speed Auto-Discharge L (XC6221B/D) CE Pin internally pulled-down (XC6221C/D) Low ESR Capacitor : 1.0 F ceramic capacitor Low Output Noise Operating Ambient Temperature : -40 ~+85 Packages : USP-4, SOT-25, SSOT-24 USPN-4 : EU RoHS Compliant, Pb Free Environmentally Friendly TYPICAL PERFORMANCE TYPICAL APPLICATION CIRCUIT CHARACTERISTICS Load Transient Response 1/28 XC6221 Series PIN CONFIGURATION USP-4 SOT-25 SSOT-24 (BOTTOM VIEW) (TOP VIEW) (TOP 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 USPN-4 should be electrically opened or connected to the V (No.2) SS (BOTTOM VIEW) 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 CE PIN LOGIC CONDITION PIN NAME DESIGNATOR CONDITIONS H 1.2V V 6.0V CE CE L V 0.3V CE * V CE pin voltage CE 2/28