XC6210 Series ETR0317 007 High Current, High Speed LDO Regulators GENERAL DESCRIPTION The XC6210 series are precise, low noise, high current, positive voltage low dropout regulators. They are fabricated using Torexs CMOS process. The series features a voltage reference, an error amplifier, a current limiter, and a phase compensation circuit plus a driver transistor. With a low ON resistance driver transistor built into, batteries can be used until input-output voltage differential is minimal and can accordingly be used for a longer time. The series is also compatible with low ESR ceramic capacitors which give added output stability. The output voltage of the LDO is selectable in 0.05V increments within the range of 0.80V to 5.00V. The current limiter s foldback circuit also operates as the output current limiter and the output pin protection. The IC s internal regulator circuit can be placed in stand-by mode via the CE function. In the stand-by mode, power consumption is greatly reduced. FEATURES APPLICATIONS Maximum Output Current : More than 700mA Optical disk drive (800mA limit, TYP.) Magnetic disk drive (1.60V<VOUT<5.00V) Dropout Voltage : 50mV 100mA Digital still cameras / Camcorders : 100mV 200mA Digital audio equipments Operating Voltage Range : 1.50V ~ 6.00V Output Voltage Range : 0.80V ~ 5.00V (0.05V increments) Multi-function power supplies Highly Accurate : +2% (1.55VVOUT5.00V) +30mV (0.80VVOUT1.50V) Low Power Consumption : 35A (TYP.) High Ripple Rejection : 60dB 1kHz Operational Ambient Temperature : -40 ~ 85 CMOS Low ESR Capacitor Compatible Packages : SOT-25 SOT-89-5 USP-6B Environmentally Friendly : EU RoHS Compliant, Pb Free TYPICAL APPLICATION CIRCUIT TYPICAL PERFORMANCE CHARACTERISTICS Dropout Voltage vs. Output Current XC6210x302xx CE NC 6 1 C =1.0F(ceramic),C =1.0F(ceramic) IN L NC 2 V 5 OUT 0.6 Ta=85 V V IN SS 3 4 C C IN L Ta=25 0.5 1.0F 1.0F Ta=-40 ceramic) (ceramic) 0.4 0.3 0.2 0.1 0.0 0 100 200 300 400 500 600 700 Output Current : I (mA) OUT 1/24 Dropout Voltage : Vdif(V) XC6210 Series BLOCK DIAGRAM V IN V IN ON/OFF ON/OFF CE eachcircuit eachcircuit CE Control Control R pull down - - Error Current Error Current Amp Limit Amp Limit + + V VOUT OUT R1 R1 R2 R2 Voltage Voltage VSS VSS Reference Reference XC6210A XC6210B/D XC6210A Series XC6210B/D Series VIN R pull up ON/OFF eachcircuit CE Control - Error Current Amp Limit + V OUT R1 R2 Voltage V SS Reference XC6210C Series XC6210C *Diodes shown in the above circuit are ESD protection diodes and parasitic diodes 2/24