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LM1117-3.3_电压转换芯片_数据手册_说明书

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    LM1117-3.3_电压转换芯片_数据手册_说明书

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    CYStech Electronics Corp. 1A Low Dropout Positive Voltage Regulator LM1117L3 Spec. No. : C506L3 Issued Date : 2003.03.22 Revised Date :2005.10.07 Page No. : 1/4 Features ●Adjustable or Fixed Output ●Output Current of 1A ●Low Dropout, 1.3V max at 1A Output Current ●0.04% Line Regulation ●0.2% Load Regulation ●100% Thermal Limit Burn-in ●Fast Transient Response Description The LM1117 series of positive adjustable and fixed regulators are designed to provide 1A with high efficiency. All internal circuitry is designed to operate down to 1.3V input to output differential. On-chip trimming adjusts the reference voltage to 1%. Applications ● High Efficiency Linear Regulators ● Post Regulators for Switching Supplies ● Adjustable Power Supply Typical Application Data Fixed Voltage Regulator VIN>4.75V C1 10μF Tant 3 IN TAB 2 OUT GND 1 Adjustable Voltage Regulator VOUT=3.3V + C2 10μF Tant.Min VIN>4.75V TAB IN OUT ADJ + C1 10μF, Tant VOUT=3.45V + C2 10μF Tant.Min VOUT=VREF×(1+R2/R1)+IADJ×R2 Notes: 1) C1 needed if device is far from filter capacitors 2) C2 minimum value required for stability R2 232 Ohm,1% LM1117L3 CYStek Product Specification CYStech Electronics Corp. Package Information Spec. No. : C506L3 Issued Date : 2003.03.22 Revised Date :2005.10.07 Page No. : 2/4 Pin Function 1 123 2 ADJ/GND OUTPUT 3 INPUT SOT-223 Absolute Maximum Ratings Symbol PD VIN TJ TSTG TLEAD Parameter Power Dissipation Input Voltage Operating Junction Temperature Range Control Section Power Transistor Storage Temperature Lead Temperature(Soldering, 10 sec) Maximum Internally Limited 7 0 to 125 0 to 150 -65 to 150 300 Units W V ℃ ℃ ℃ Device Selection Guide Device LM1117-Adj LM1117-1.5 LM1117-1.8 LM1117-2.5 LM1117-2.85 LM1117-3.0 LM1117-3.3 LM1117-3.5 LM1117-5.0 Output Voltage Adjustable 1.5V 1.8V 2.5V 2.8 5V 3. 0V 3.3V 3.5V 5.0V Electrical Characteristics @ILOAD=0mA,TJ=25℃, unless otherwise specified Parameter Reference voltage (Note 1) Output Voltage (Note 1) Line Regulation (Note 1) Load Regualtion (Note 1) Device Adj Version Al fixed version All All Test Conditions VIN=5V,ILOAD=10mA VIN=2.65V to 7V,ILOAD=10mA to 1A VIN=VOUT+1.5V Variator from nominal VOUT VIN=VOUT+1.5V to 7V ILOAD=0mA to 1A Variator from nominal VOUT ILOAD=10mA,(VOUT+1.5V)≦V≦7V VIN=VOUT+1.5V, ILOAD=10mA to 1A Minimum Load Current Ground Pin Current Adjust Pin Current Adj Version VIN=5V,VADJ=0V All fixed version VIN=VOUT+1.5V, ILOAD=10mA to 1A Adj Version VIN=2.65V to 7V, ILOAD=10mA LM1117L3 Min Typ Max Units 1.238 1.250 1.262 V * 1.225 1.250 1.275 -1 +1 % * -2 +2 % * 0.04 0.2 * 0.2 0.4 % * 3 7 mA * 7 13 mA * 55 90 µA CYStek Product Specification CYStech Electronics Corp. Current Limit All (VIN-VOUT)=1.5V * Ripple Rejection (Note 2) All VIN=VOUT+1.5V, ILOAD= 1A Dropout Voltage All VIN≧2.65V, ILOAD= 1A * (Note 1,3) Temperature Coefficient All VIN=VOUT=1.5V, ILOAD= 10mA * The * denotes the specifications which apply over the full temperature range. Note 1:Low duty pulse testing with Kelvin connections required. Note 2:120Hz input ripple(CADJ for ADJ=25μF) Note 3:△VOUT, △VREF=1%. Spec. No. : C506L3 Issued Date : 2003.03.22 Revised Date :2005.10.07 Page No. : 3/4 1 A 60 72 dB 1.15 1.3 V 0.005 %/℃ Representative Circuit Diagram VIN FOR ADJUSTABLE VOLTAGE DEVICE ADJ FOR FIXED VOLTAGE DEVICE GND LM1117L3 VOUT CYStek Product Specification CYStech Electronics Corp. SOT-223 Dimension Spec. No. : C506L3 Issued Date : 2003.03.22 Revised Date :2005.10.07 Page No. : 4/4 A B 1 C 2 3 D E F H G I Date Code 左一: 西元年末碼 左二: 月碼, 1=A, 2=B,…8=H, 9=J, …,12=M 左三-四: 流水號 Part number: XX: 15 for 1.5V 18 for 1.8V 25 for 2.5V 33 for 3.3V 50 for 5.0V Blank for ADJ a1 a2 Style: Pin 1.Adj/Gnd 2.Output 3.Input 3-Lead SOT-223 Plastic Surface Mounted Package CYStek Package Code: L3 DIM Inches Min. Max. A 0.1142 0.1220 B 0.2638 0.2874 C 0.1299 0.1457 D 0.0236 0.0315 E *0.0906 - F 0.2480 0.2638 Millimeters Min. Max. 2.90 3.10 6.70 7.30 3.30 3.70 0.60 0.80 *2.30 - 6.30 6.70 DIM Inches Min. Max. G 0.0551 0.0709 H 0.0098 0.0138 I 0.0008 0.0039 a1 *13o - a2 0o 10 o *: Typical Millimeters Min. Max. 1.40 1.80 0.25 0.35 0.02 *13o 0.10 - 0o 10 o Notes: 1.Controlling dimension: millimeters. 2.Maximum lead thickness includes lead finish thickness, and minimum lead thickness is the minimum thickness of base material. 3.If there is any question with packing specification or packing method, please contact your local CYStek sales office. Material: • Lead: 42 Alloy; solder plating • Mold Compound: Epoxy resin family, flammability solid burning class: UL94V-0 Important Notice: • All rights are reserved. Reproduction in whole or in part is prohibited without the prior written approval of CYStek. • CYStek reserves the right to make changes to its products without notice. • CYStek semiconductor products are not warranted to be suitable for use in Life-Support Applications, or systems. • CYStek assumes no liability for any consequence of customer product design, infringement of patents, or application assistance. LM1117L3 CYStek Product Specification

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