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| CYStech Electronics Corp. 3A Low Dropout Positive Voltage Regulator Spec. No. : C540J3 Issued Date : 2003.06.25 Revised Date : Page No. : 1/4 PL1085-XXXJ3 Features Dropout Voltage 1.3V at 3A Output Current. Fast Transient Response. Extremely Tight Line and Load Regulation. Current Limiting and Thermal Protection. Adjustable Output Voltage or Fixed 1.5V, 1.8V, 2.5V, 2.85, 3.0V, 3.3V, 3.5V, 5.0V. Standard 3-Pin Power Packages. TO-252 Description The PL1085-XXXJ3 is a low dropout three terminal regulator with 3A output current capability. The output voltage is adjustable with the use of a resistor divider or fixed 1.5V, 1.8V, 2.5V, 2.85V, 3.0V, 3.3V, 3.5V and 5.0V. Dropout voltage is guaranteed to be at maximum of 1.3V with the maximum output current. Its low dropout voltage and fast transient response make it ideal for low voltage microprocessor applications. Current limit and thermal protection provide protection against any overload condition that would create excessive junction temperatures. Applications Mother Board I/O Power Supplies. Microprocessor Power Supplies. High Current Regulator. Post Regulator for Switching Supply. Typical Application Circuit Vin=5V Vout=3.3V ADJ C1 10F VREF R1 125 1% R2 205 1% C2 10F VREF=VOUT-VADJ=1.25V(typ) VOUT=VREF(1+R1/R2)+IADJ xR2 IADJ=55A(typ.) (1)C1 needed if device is far away from filter capacitors. (2)C2 required for stability. Adjustable Voltage Regulator Vin=5V Vout=3.3V C1 10F GND C2 10F Fixed Voltage Regulator PL1085J3 CYStek Product Specification CYStech Electronics Corp. Ordering Information Device PL1085-AdjJ3 PL1085-1.5J3 PL1085-1.8J3 PL1085-2.5J3 PL1085-2.85J3 Output Voltage Adjustable 1.5V 1.8V 2.5V 2.85V Device PL1085-3.0J3 PL1085-3.3J3 PL1085-3.5J3 PL1085-5.0J3 Spec. No. : C540J3 Issued Date : 2003.06.25 Revised Date : Page No. : 2/4 Output Voltage 3.0V 3.3V 3.5V 5.0V Absolute Maximum Ratings VIN pin to ADJ/GND pin .............................................................................................................7V Operating Junction Temperature Range .................................................................................0C~ 125C Storage Temperature Range............................................................................................- 65C ~ 150C Thermal Resistance Junction to Case ........................................................................................12.5C /W Thermal Resistance Junction to Ambient (Assume no ambient airflow, no heatsink) ................................ 100C /W Lead Temperature (Soldering) 10 sec. ...........................................................................................260C Electrical Characteristics (Vin=5V, Io=10mA,Tj=25,unless otherwise noted) Symbol VREF Parameter Reference Voltage Conditions Tj=25C PL1085-1.5 PL1085-1.8 PL1085-2.5 PL1085-2.85 PL1085-3.0 PL1085-3.3 PL1085-3.5 PL1085-5.0 Adj : 2.65VVin7V,Tj=25 Fix : 1.4+VoutVin7V 10mAIo3A,Tj=25 Vin-Vout=1.5V 2.65VVin7V 2.65VVin7V, 0CTj125C Io=0.5A, 0CTj125C 0CTj125C 10Hzf10KHz,Tj=25 Vin-Vout=3V, f=120Hz, Cout=25F Vout , VREF=1%, 10mAIo3A 0CTj125C Min 1.238 1.48 1.78 2.47 2.82 2.97 3.26 3.46 4.95 3 60 Typ 1.250 1.50 1.80 2.50 2.85 3.00 3.30 3.50 5.00 0.015 55 0.2 0.5 5 0.003 72 1.2 Max 1.262 1.52 1.82 2.53 2.88 3.03 3.34 3.54 5.05 0.2 0.6 90 5 10 1.3 Units V Vo Output Voltage V Vo Vo Is IAdj IAdj Ts IL VN RR VD PL1085J3 Line Regulation Load Regulation Current Limit Adjust Pin Current Adjust Pin Current Change Temperature Stability Minimum Load Current RMS Output Noise(% of Vout) Ripple Rejection Ratio Dropout Voltage % % A A A % mA % dB V CYStek Product Specification CYStech Electronics Corp. Block Diagram Spec. No. : C540J3 Issued Date : 2003.06.25 Revised Date : Page No. : 3/4 VIN Current Amp. VREF 1.25V Thermal Limit 55A Current Limit VOUT For fixed voltage device ADJ GND PL1085J3 CYStek Product Specification CYStech Electronics Corp. TO-252 Dimension A C Spec. No. : C540J3 Issued Date : 2003.06.25 Revised Date : Page No. : 4/4 Marking: B L F G D 1085-XXX 3 H E K 2 I 1 J Style: Pin 1.Adj(GND) 2.Vout(TAB) 3.Vin 3-Lead TO-252 Plastic Surface Mount Package CYStek Package Code: J3 *: Typical DIM A B C D E F Inches Min. Max. 0.0177 0.0217 0.0650 0.0768 0.0354 0.0591 0.0177 0.0236 0.2520 0.2677 0.2125 0.2283 Millimeters Min. Max. 0.45 0.55 1.65 1.95 0.90 1.50 0.45 0.60 6.40 6.80 5.40 5.80 DIM G H I J K L Inches Min. Max. 0.0866 0.1102 *0.0906 0.0354 0.0315 0.2047 0.2165 0.0551 0.0630 Millimeters Min. Max. 2.20 2.80 *2.30 0.90 0.80 5.20 5.50 1.40 1.60 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. PL1085J3 CYStek Product Specification |
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