XC6237Series ETR03100-002 Ultra-Low Supply Current 0.6A High Speed LDO Voltage Regulators Green Operation Compatible GENERAL DESCRIPTION The XC6237 series is a CMOS process high-speed LDO regulator IC that achieves low current consumption, high accuracy, and high ripple rejection. The output voltage is fixed internally and can be set in the range of 1.2V to 5.0V (0.05V step). It has a Green Operation (GO) function that achieves both high-speed operation and low current consumption, and switches automatically between high speed (HS) mode and power save (PS) mode according to the output current. At light load, high efficiency is realized by operating in PS mode with low current consumption, and at heavy load, high speed operation is enabled by operating in HS mode. This is ideal for applications that require both low current consumption and high speed operation. The lineup of small and thin USPQ-4B05 and general-purpose SSOT-24 is available for various applications. Low ESR capacitors such as ceramic capacitors can be used at the output of LDO. FEATURES APPLICATIONS Low Supply Current : 0.6A TYP (PS) Smart meters Accuracy : +1.0% (V 2.00V) OUT Smart cards 20mV (V 1.95V) OUT Wearable devices Operating Voltage Range : 1.6V ~ 6.0V Remote controllers Output Voltage Range : 1.2V ~ 5.0V (0.05V steps) Maximum Output Current : 150mA High Ripple Rejection : 60dB 1kHz (HS) Green Operation, Function : CE function : H Active CL Discharge (A TYPE) Protective Function : C urr ent Limit 250mA (TYP) Short-Circuit Current 25mA (TYP) Output Capacitor : Ceramic capacitor Operating Ambient Temperature : -40 ~ 105 Packages : USPQ-4B05 (1.0x1.0xh0.33mm) SSOT-24 Environmentally Friendly : E U R oHS Compliant, Pb Free TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS V V IN OUT CE V SS C =1.0uF C =1.0uF IN L (ceramic) (ceramic) 1/26 XC6237 Series BLOCK DIAGRAMS XC6237 Series A Type V IN - Error Amp + Voltage Green Current V OUT Reference Operation Limit R1 R DCHG R2 ON/OFF each CE Control CE circuit V SS XC6237 Series B Type V IN - Error Amp + Voltage Green Current V OUT Reference Operation Limit R1 R2 ON/OFF each CE Control circuit V SS Diodes inside the circuits are ESD protection diodes and parasitic diodes. 2/26