PRELIMINARY S1117 LDO Linear Regulator Features ◆ Adjustable and Fixed of 1.8V, 2.5V, 2.85V, 3.3V, 5V ◆ Space saving SMD types of SOT-223 and D-Pak(TO-252) ◆ 1.1V Drop-out Voltage ◆ 1.0A Output Current ◆ Current Limiting and Thermal protection ◆ Over Current Protection. ◆ Ouput trimmed to 2% Tolerance ◆ Fast Transient Response Symbol General Description The IP1117 is a series of low dropout voltage regulators which can provide up to 1A of output current. The IP1117 is available in four fixed voltages, 2.5V, 2.85V, 3.3V and 5.0V. Additonally it is also available in adjustable version. On chip precision trimming adjusts the refernce/ output voltage to within ± 2%. Current limit is also trimmed to ensure specified output current and controlled short-circuit current. The IP11117 series is available in SOT-223 and DPAK power packages. A minimum of 10uF tantalum capacitor is required at the output to improve the transient response and stability. DPAK SOT-223 Applications ◆ 2.85V Model for SCSI-2 Active Termination ◆ Post Regulator for Sitching DC/DC Converter ◆ High Efficiency Linear Regulator ◆ Battery Chargers ◆ PC Add on Card Absolute Maximum Ratings Parameter Symbol Input Voltage VIN(MAX) Value Units 18 V Junction Temperature TJ -25°C ~ +125°C °C Storage Temperature TSTG -55°C ~ +150°C °C Electrical Characteristics ( Vin = 5V, Co = 10uF, Ta = 25°C, unless otherwise specified) Parameter Symbol Test Condition Reference Voltage Output Voltage Sep 2002. Rev. 0 Vref Vout MIn. Typ. Max. Units S1117 Only 1.5V < (VIN -VOUT) < 7V, IO = 10mA 1.225 1.250 1.275 V S1117-1.8 10mA < IOUT < 1A, 3.8V < VIN < 10V 1.764 1.800 1.836 V S1117-2.5 10mA < IOUT < 1A, 4.0V < VIN < 10V 2.450 2.500 2.550 V S1117-2.85 10mA < IOUT < 1A, 4.25V < VIN < 10V 2.793 2.850 2.907 V S1117-3.3 10mA < IOUT < 1A, 4.75V < VIN < 10V 3.234 3.300 3.366 V S1117-5.0 10mA < IOUT< 1A, 6.5V < VIN <12V 4.900 5.000 5.100 V 1/5 PRELIMINARY S1117 Electrical Characteristics ( Vin = 5V, Co = 10uF, Ta = 25°C, unless otherwise specified) Parameter Symbol Test Condition Line Regulation Load Regulation dVOUT1 dVOUT2 MIn. Typ. Max. Units S1117 IOUT=10mA, 1.5V < (VIN -VOUT) < 12V - 0.035 0.2 % S1117-1.8 IOUT = 10mA, 3.8V < VIN < 12.8V - 1 3 mV S1117-2.5 IOUT = 10mA, 4.0V < VIN < 15V - 1 6 mV S1117-2.85 IOUT = 10mA, 4.25V < VIN < 15V - 1 6 mV S1117-3.3 IOUT = 10mA, 4.75V < VIN < 15V - 1 6 mV S1117-5.0 IOUT= 10mA, 6.50V < VIN < 15V - 1 6 mV S1117 VIN - VOUT =2V, 10mA < IOUT < 1A - 0.05 0.5 % S1117-1.8 VIN =3.8V, 10mA <IOUT< 1A - 1 10 mV S1117-2.5 VIN =4.0V, 10mA <IOUT< 1A - 1 10 mV S1117-2.85 VIN =4.25V, 10mA < IOUT < 1A - 1 10 mV S1117-3.3 VIN =4.80V, 10mA < IOUT < 1A - 1 12 mV S1117-5.0 VIN =6.5V, 10mA < IOUT< 1A - 1 15 mV Dropout Voltage 1 VDROP1 IOUT = 100mA - 1.10 1.15 V Dropout Voltage 2 VDROP2 IOUT = 1A - 1.2 1.25 V Quiescent Current Iq V IN < 12V - 5 10 mA Ripple Rejection RR 60 72 - dB Current Limit ILimit 1 1.5 - A Adjust Pin Current Iadj - 35 100 uA Adjust Pin Current Change Ichg - 0.2 5 uA Minimum Load Current IMin 10 - - mA Long Term Stability Stable TA = 125°C, 1000hrs - 0.03 1.0 % 10Hz < f < 10kHz - 0.003 - % Junction Temperature - 150 - °C - 10 - °C RMS Output Noise Thermal Shutdown Tsd Thermal Shutdown Hysteresis Thys 2/5 f = 120Hz, COUT = 22uF Tantalum, (VIN - VOUT) = 3V, IOUT = 1A VIN - VOUT = 2V 10mA < IOUT< 1A 1.5V < Vin - Vout < 12V Only S1117 PRELIMINARY S1117 Fig 1. Tempearture vs. Quiescent current Fig 2. Temperature vs. Ouput voltage 4 6 5 3 VOUT[V] ICC[mA] 4 3 2 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable IO=0[mA] 1 0 -20 0 20 40 60 80 2 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable IO=10[mA] 1 0 100 -20 0 20 40 60 80 100 Temperature[℃] Temperature[℃] Fig 4. temperature vs. Drop out voltage Fig 3. Temperature vs. Load regulation 100 1.4 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable IO=10[mA] 80 1.2 1.0 VDROP[V] VLOAD[V] 60 40 0.8 0.6 0.4 VOUT = 3.3[V] Temp. = Variable IO=1.0[A] 20 0.2 0 -20 0 20 40 60 80 100 Temperature[℃] 16 14 VLOAD[mV] 12 10 8 6 4 VIN = 5.3[V] IO=variable TA=25[℃] 2 0.2 0.4 0.6 IO[A] 3/5 -20 0 20 40 60 Temperature[℃] Fig 5. IO vs. Load regulation 0 0.0 0.0 0.8 1.0 80 100 PRELIMINARY S1117 Typical Application IP1117-2.5 VIN 5V 10uF (3) IN + 10uF OUT(2) GND (1) 22uF IP1117 VIN 5V (3) IN + Vout 2.5V at 1A + Vout 2.5V at 1A OUT(2) + GND (1) 22uF 125Ω 125Ω www.semiwell.com Copyright@SemiWell Semiconductor Co., Ltd., All rights are reserved 4/5 PRELIMINARY IP1117 Package Dimension SOT-223 D-PAK 5/5