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BU21UB3WG-GTL Datasheet(PDF) 4 Page - Rohm |
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BU21UB3WG-GTL Datasheet(HTML) 4 Page - Rohm |
4 / 13 page www.rohm.com © 2012 ROHM Co., Ltd. All rights reserved. TSZ02201-0RBR0A300010-1-2 TSZ22111・15・001 4/10 25.DEC.2012.Rev.001 BUxxUB3WG series Datasheet ●Electrical Characteristics (Ta=25℃, VIN=VOUT+1.0V (*3), STBY=VIN, Cin=1.0μF, Co=1.0μF, unless otherwise noted.) ●This product is not designed for protection against radioactive rays. (*3) VIN=2.5V for VOUT≦1.5V (*4) VIN=2.5V to 3.6V for VOUT≦1.5V ●Block Diagrams Limit PARAMETER Symbol MIN. TYP. MAX. Unit Conditions Overall Device VOUT×0.99 VOUT×1.01 IOUT=10μA,VOUT≧2.5V Output Voltage 1 VOUT1 VOUT-25mV VOUT VOUT+25mV V IOUT=10μA,VOUT<2.5V Operating Current IIN - 50 90 μA IOUT=0mA Operating Current (STBY) ISTBY - - 1.0 μA STBY=0V Ripple Rejection Ratio RR 45 70 - dB VRR=-20dBv,fRR=1kHz,IOUT=10mA, VIN=3.6V - 470 700 mV 1.0V≦VOUT<1.2V(IOUT=300mA) - 350 500 mV 1.2V≦VOUT<1.5V(IOUT=300mA) - 280 380 mV 1.5V≦VOUT<1.7V(IOUT=300mA) - 250 320 mV 1.7V≦VOUT<2.1V(IOUT=300mA) - 220 260 mV 2.1V≦VOUT<2.5V(IOUT=300mA) Dropout Voltage VSAT - 200 220 mV 2.5V≦VOUT<2.6V(IOUT=300mA) Line Regulation VDL - 2 20 mV VIN=VOUT+1.0V to 3.6V(*4), IOUT=10μA - 25 45 mV IOUT=0.01mA to 300mA Load Regulation VDLO - 35 55 mV IOUT=0.01mA to 360mA Over-current Protection (OCP) Limit Current ILMAX 370 550 - mA Vo=VOUT*0.95 Short Current ISHORT 50 150 300 mA Vo=0V Standby Block Discharge Resistor RDSC 20 50 80 Ω VIN=3.6V, STBY=0V, VOUT=2.6V STBY Pin Pull-down Current ISTB 0.1 0.9 8.0 μA STBY=1.5V ON VSTBH 1.2 - 5.5 V STBY Control Voltage OFF VSTBL -0.3 - 0.3 V Output Voltage 2 VOUT2 1.7 1.8 1.9 V VIN=2.375V to 2.625V VOUT=1.8V, IOUT=0.01mA to 300mA, Ta=-40~85℃ Cin・・・1.0 μF (Ceramic) Co ・・・1.0 μF (Ceramic) 1 3 5 2 Cin VIN GND STBY STBY VOUT VOUT Co VREF OCP STBY Discharge TSD VIN Fig. 2 Block Diagrams |
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