ET1117 1A Low Dropout Positive Voltage Regulator Description ¾ ¾ ¾ The ET1117 series of positive adjustable and fixed regulators are designed to provide 1A with high efficiency. All internal circuitry is designed to operate down to 1.4V input to output differential. On-chip trimming adjusts the reference voltage to 1%. Current limit the typical value of 1.5A allow to minimize the stress on both the regulator and the power source circuitry under overload conditions. ¾ ¾ ¾ www.estek.com.cn Adjustable or Fixed output. Output Current of 1A. Low Dropout, 1.3V typical at 1A Output Current. 0.04% Line Regulation. 0.2% Load Regulation. 100% Thermal Limit Burn-In. Fast Transient Response. ¾ ¾ ¾ ¾ Pin Description 1 Features Applications High Efficiency Linear Regulators. Post Regulators for Switching Supplies. Adjustable Power Supply Ordering Information Part Number Package Packing ET1117VI-XX SOT-223 Reel ET1117DI-XX SOT-89 Reel ET1117UI-XX TO-252 Reel ET1117GI-XX TO-263 Reel XX Output XX Output Blank Adj. 30 3.0V 15 1.5V 33 3.3V 18 1.8V 35 3.5V 25 2.5V 50 5.0V 28 2.85V Copyright @ Estek Electronics Co., Ltd Version 0.1 6 July 2011 ET1117 Absolute Maximum Ratings Symbol VIN VIN-VOUT TJ Parameter Value Unit Input Voltage 20 V Voltage Difference 10 Operating Junction Temperature Range TSTG Storage Temperature TLEAD Lead Temperature (Soldering, 10 sec.) VESD Minimum ESD Rating (HBM) V -40 to 125 o -65 to 150 o 300 o C C 2 KV Unit Thermal Characteristics Symbol Parameter Package Typical Value SOT-223 70 θ Thermal Resistance From Junction to Ambient in Free Air. (Measured with the component mounted on a high effective thermal conductivity test board in free air.) TO-252 55 TO-263 50 JA C o C/W Electrical Characteristics (Ta=25 °C, VKA=VREF, IK=10mA unless otherwise noted .) Symbol Parameter Test Condition Min. Typ. Max. Unit VIN=5V, ILoad=10mA 1.232 1.25 1.268 V VIN=2.65V to 13V, VIN -VOUT≦10V, ILoad=10mA to 1A 1.225 1.25 1.275 V -1.5 - +1.5 % VREF Reference Voltage VOUT Output Voltage (All fixed versions) VIN=VOUT+1.5V, Variator from nominal VOUT VD Dropout Voltage ILOAD=1A - 1.3 1.4 V REGLINE Line Regulation ILOAD=10mA, 1.5V≦VIN -VOUT≦10V - 0.04 0.2 % REGLOAD Load Regulation VIN=VOUT+1.5V, ILOAD=10mA to 1A - 0.2 0.4 % IO Minimum Load Current VIN=5V, VADJ=0V - 2 7 mA IQ Quiescent Current VIN=VOUT+1.5V, ILOAD=10mA to 1A - 3.5 10 mA IAdj Adjust Pin Current 1.5V≦VIN-VOUT≦10V, ILOAD=10mA - 35 60 uA ILIMIT Current Limit VIN-VOUT=1.5V 1 1.5 2 A PSRR Ripple Rejection VIN-VOUT=1.5V, ILOAD=1A 60 - - dB www.estek.com.cn 2 Copyright @ Estek Electronics Co., Ltd Version 0.1 6 July 2011 ET1117 Block Diagram Typical Application Circuits www.estek.com.cn 3 Copyright @ Estek Electronics Co., Ltd Version 0.1 6 July 2011 ET1117 Typical Characteristics www.estek.com.cn 4 Copyright @ Estek Electronics Co., Ltd Version 0.1 6 July 2011 ET1117 Package Information SOT-223 www.estek.com.cn 5 Copyright @ Estek Electronics Co., Ltd Version 0.1 6 July 2011 ET1117 Package Information SOT-89 www.estek.com.cn 6 Copyright @ Estek Electronics Co., Ltd Version 0.1 6 July 2011 ET1117 Package Information TO-252 www.estek.com.cn 7 Copyright @ Estek Electronics Co., Ltd Version 0.1 6 July 2011 ET1117 Package Information TO-263 www.estek.com.cn 8 Copyright @ Estek Electronics Co., Ltd Version 0.1 6 July 2011