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| PRELIMINARY S1117 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 LDO Linear Regulator 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 Input Voltage Junction Temperature Storage Temperature Symbol VIN(MAX) TJ TSTG Value 18 -25C ~ +125C -55C ~ +150C Units V C C Electrical Characteristics ( Vin = 5V, Co = 10uF, Ta = 25C, unless otherwise specified) Parameter Symbol Test Condition Reference Voltage Vref S1117 Only 1.5V < (VIN -VOUT) < 7V, IO = 10mA S1117-1.8 10mA < IOUT < 1A, 3.8V < VIN < 10V S1117-2.5 10mA < IOUT < 1A, 4.0V < VIN < 10V Output Voltage Vout S1117-2.85 10mA < IOUT < 1A, 4.25V < VIN < 10V S1117-3.3 10mA < IOUT < 1A, 4.75V < VIN < 10V S1117-5.0 10mA < IOUT< 1A, 6.5V < VIN <12V MIn. 1.225 1.764 2.450 2.793 3.234 4.900 Typ. 1.250 1.800 2.500 2.850 3.300 5.000 Max. 1.275 1.836 2.550 2.907 3.366 5.100 Units V V V V V V Sep 2002. Rev. 0 1/5 S1117 Electrical Characteristics ( Vin = 5V, Co = 10uF, Ta = 25C, unless otherwise specified) Parameter Symbol Test Condition S1117 IOUT=10mA, 1.5V < (VIN -VOUT) < 12V S1117-1.8 IOUT = 10mA, 3.8V < VIN < 12.8V S1117-2.5 IOUT = 10mA, 4.0V < VIN < 15V S1117-2.85 IOUT = 10mA, 4.25V < VIN < 15V S1117-3.3 IOUT = 10mA, 4.75V < VIN < 15V S1117-5.0 IOUT= 10mA, 6.50V < VIN < 15V S1117 VIN - VOUT =2V, 10mA < IOUT < 1A S1117-1.8 VIN =3.8V, 10mA PRELIMINARY MIn. 60 1 10 - Typ. 0.035 1 1 1 1 1 0.05 1 1 1 1 1 1.10 1.2 5 72 1.5 35 0.2 0.03 0.003 150 10 Max. 0.2 3 6 6 6 6 0.5 10 10 10 12 15 1.15 1.25 10 100 5 1.0 - Units % mV mV mV mV mV % mV mV mV mV mV V V mA dB A uA uA mA % % C C Line Regulation dVOUT1 Load Regulation dVOUT2 2/5 S1117 Fig 1. Tempearture vs. Quiescent current 6 4 PRELIMINARY Fig 2. Temperature vs. Ouput voltage 5 3 4 ICC[mA] VOUT[V] 3 2 2 1 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable IO=0[mA] -20 0 20 40 60 80 100 1 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable IO=10[mA] -20 0 20 40 60 80 100 0 0 Temperature[] Temperature[] Fig 3. Temperature vs. Load regulation 100 Fig 4. temperature vs. Drop out voltage 80 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable IO=10[mA] 1.4 1.2 1.0 60 VDROP[V] VLOAD[V] 0.8 0.6 0.4 40 20 0.2 0 VOUT = 3.3[V] Temp. = Variable IO=1.0[A] -20 0 20 40 60 80 100 -20 0 20 40 60 80 100 0.0 Temperature[] Temperature[] Fig 5. IO vs. Load regulation 16 14 12 10 8 6 4 2 0 0.0 VLOAD[mV] VIN = 5.3[V] IO=variable TA=25[] 0.2 0.4 0.6 0.8 1.0 IO[A] 3/5 PRELIMINARY S1117 Typical Application VIN 5V IP1117-2.5 (3) IN + GND (1) OUT(2) Vout 2.5V at 1A 22uF + 10uF VIN 5V IP1117 (3) IN + GND (1) OUT(2) Vout 2.5V at 1A + 10uF 22uF 125 125 www.semiwell.com Copyright@SemiWell Semiconductor Co., Ltd., All rights are reserved 4/5 IP1117 Package Dimension SOT-223 PRELIMINARY D-PAK 5/5 |
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