S1117 SEMIWELL | Alldatasheet

Document overview

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Technical content

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 General Description The IP1117 is a series of low dropout voltage regulators which can pro- vide up to 1A of output current. The IP1117 is available in four fixed 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. Symbol LDO Linear Regulator SOT-223 PRELIMINARY DPAK

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

Electrical Characteristics

( Vin = 5V, Co = 10uF, Ta = 25°C, unless otherwise specified) Parameter Symbol Test Condition MIn. Typ. Max. Units Line Regulation dVOUT1 S1117 IOUT=10mA, 1.5V < (VIN -VOUT) < 12V - 0.035 0.2 % S1117-1.8 IOUT = 10mA, 3.8V < VIN < 12.8V -13 m V S1117-2.5 IOUT = 10mA, 4.0V < VIN < 15V -16 m V S1117-2.85 IOUT = 10mA, 4.25V < VIN < 15V -16 m V S1117-3.3 IOUT = 10mA, 4.75V < VIN < 15V -16 m V S1117-5.0 IOUT= 10mA, 6.50V < VIN < 15V -16 m V Load Regulation dVOUT2 S1117 VIN - VOUT =2V, 10mA < IOUT < 1A - 0.05 0.5 % S1117-1.8 VIN =3.8V, 10mA <IOUT< 1A -1 1 0 m V S1117-2.5 VIN =4.0V, 10mA <IOUT< 1A -1 1 0 m V S1117-2.85 VIN =4.25V, 10mA < IOUT < 1A -1 1 0 m V S1117-3.3 VIN =4.80V, 10mA < IOUT < 1A -1 1 2 m V S1117-5.0 VIN =6.5V, 10mA < IOUT< 1A -1 1 5 m V 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 1 0 m A Ripple Rejection RR f = 120Hz, COUT = 22uF Tantalum, (VIN - VOUT) = 3V, IOUT = 1A 60 72 - dB Current Limit ILimit VIN - VOUT = 2V 11 . 5 -A Adjust Pin Current Iadj - 35 100 uA Adjust Pin Current Change Ichg 10mA < IOUT< 1A 1.5V < Vin - Vout < 12V -0 . 25 u A Minimum Load Current IMin Only S1117 10 - - mA Long Term Stability Stable TA = 125°C, 1000hrs - 0.03 1.0 % RMS Output Noise 10Hz < f < 10kHz - 0.003 - % Thermal Shutdown Tsd Junction Temperature - 150 - °C Thermal Shutdown Hysteresis Thys - 10 - °C S1117 PRELIMINARY

-20 0 20 40 60 80 100 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 VOUT = 3.3[V] Temp. = Variable I O=1.0[A] VDROP[V] Temperature[ ]℃ -20 0 20 40 60 80 100 100 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable I O=10[mA] VLOAD[V] Temperature[ ]℃ -20 0 20 40 60 80 100 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable I O=10[mA] VOUT[V] Temperature[ ]℃ -20 0 20 40 60 80 100 VCC = 5.3[V] VOUT = 3.3[V] Temp. = Variable I O=0[mA] ICC[mA] Temperature[ ]℃ VIN = 5.3[V] IO=variable TA=25[ ] VLOAD[mV] IO[A] S1117 PRELIMINARY Fig 1. Tempearture vs. Quiescent current Fig 2. Temperature vs. Ouput voltage Fig 3. Temperature vs. Load regulation Fig 4. temperature vs. Drop out voltage Fig 5. IO vs. Load regulation

www.semiwell.com IP1117-2.5 (3) IN OUT(2) GND (1)10uF 22uF VIN Vout 2.5V at 1A 10uF 22uF VIN Vout 2.5V at 1A IP1117 (3) IN OUT(2) GND (1) 125Ω 125Ω PRELIMINARY Copyright@SemiWell Semiconductor Co., Ltd., All rights are reserved