XC6227 Series ETR0354-005 700mA High Speed LDO Regulator with Reverse Current Protection GENERAL DESCRIPTION The XC6227 series is a highly accurate, low noise, high ripple rejection, low dropout, and low power consumption high speed voltage regulator. The series consists of a voltage reference, an error amplifier, a driver transistor, a current limiter, a thermal protection circuit, a reverse current protection circuit and a phase compensation circuit. The CE function enables the entire circuit to be placed in a stand-by state by inputting a low level signal to the CE pin. Over-current protection and thermal protection circuits are integrated. The protection circuit starts to operate when either output current reaches the current limit level or junction temperature reaches the temperature limit. With the reverse current protection function of a driver transistor, the reverse current flow is prohibited when VOUT voltage is higher than VIN voltage. For an example, when a battery is connected to the VOUT pin, battery current will not flow back to the XC6227. FEATURES APPLICATIONS Maximum Output Current : 7 0 0 m A USB products and HDMI equipments Dropout Voltage : 120mV I =300mA(V =3.0V) OUT OUT E-book Readers / Electronic dictionaries Operating Voltage Range : 1.7V ~ 6.0V Smart Phones / Mobile phones Output Voltages : 0.8V ~ 5.0V (0.05V increments) Portable game consoles Accuracy : +1% (VOUT2.0V) Modules (Wireless, Camera, etc.) +0.02V (VOUT2.0V) Low Power Consumption : 100A Chip Enable(CE) : Active High Standby Current below 0.1A High Ripple Rejection : 65dB 1kHz Operating Ambient Temperature : -40 ~ 85 Low ESR Capacitor : Ceramic capacitor Packages : USP-6C, SOT-25, SOT-89-5 Environmentally Friendly : EU RoHS Compliant, Pb Free TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS V Sink Current VS. Input Voltage OUT V - OUT USB 5V XC6227C331 V =3.3V VIN OUT I =0mA OUT 10 V Sink Current OUT -40 TYP2.8A 8 I OUT 25 XC6227C VOUT 85 CE 6 C 1F(ceramic) To System LSI IN 4 C 2.2F(ceramic) L Step-Up VIN VOUT DC/DC 2 Converter VSS VSS Battery 0 -2 0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5 6 Input VoltageV (V) IN 1/23 V Sink CurrentI ( A) OUT REVS XC6227 Series BLOCK DIAGRAM 1) XC6227 series A type 2) XC6227series C type Reverse Reverse Current Current Protection Protection VIN VOUT VIN VOUT CFB CFB CurrentLimit CurrentLimit & & R1 R1 ThermalShutdown ThermalShutdown + + Error Error Amp Amp - - R2 R2 each each circuit Voltage circuit Voltage ON/OFF ON/OFF CE Reference CE Reference Control Control VSS VSS XC6227Aseries XC6227Cseries * Diodes inside the circuits are ESD protection diodes and parasitic diodes. PRODUCT CLASSIFICATION Ordering Information ( ) *1 XC6227 - DESIGNATOR ITEM SYMBOL DESCRIPTION A Type Refer to Selection Guide C Output Voltage 08 ~ 50 e.g. 2.8V =2, =8 Output voltage x.x0v (the 2nd decimal place is0 ) 1 Output Voltage 1% (VOUT>2.0V), 20mV (VOUT2.0V) nd (the 2 decimal place) Output voltage x.x5v (the 2nd decimal place is5 ) B 1% (V >2.0V), 20mV (V 2.0V) OUT(T) OUT(T) MR-G SOT-25 (3,000pcs/Reel) - Packages (Order Unit) PR-G SOT-89-5 (1,000pcs/Reel) ER-G USP-6C (3,000pcs/Reel) (*1) The -G suffix denotes Halogen and Antimony free as well as being fully EU RoHS compliant. Selection Guide CE PULL-DOWN TYPE CE High Active RESISTOR A Yes No C Yes Yes 2/23