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CYStech Electronics Corp. Three Terminal Low Current Negative Voltage Regulators Spec. No. : C531A3 Issued Date : 2003.04.08 Revised Date : .. Page No. : 1/3 TO-92 PL79L12XA3 Description The PL79L12XA3 is an inexpensive, easy-to-use device suitable for numerous applications requiring up to 100mA. Like the higher powered PL7900E3 series negative regulators, this device features thermal shutdown and current limiting, making it remarkably rugged. In most applications, no external components are required for operation. The PL79L12A3 device is useful for on-card regulation or any other application where a regulated negative voltage at a modest current level is needed. This regulator offers substantial advantage over the common resistor/zener diode approach. * No external components required *Internal short circuit current limiting *Internal thermal overload protection *Low cost *Complementary positive regulators offered(PL78L12A3) *Available in either 3% or 5% selection. Absolute Maximum Ratings (Ta=25C) * Input Voltage.............................................................................................................-35V * Total Power Dissipation............................................................................... Internally limited * Operating Temperature Range...................................................................... 0 C to +125 C * Maximum Junction Temperature................................................................................+150 C * Storage Temperature Range........................................................................-55 C to +150 C * Lead Temperature (Soldering 10S)...................................... ....................................260 C Typical Application Representative Schematic Diagram Gnd Vin PL79L12 Vout R5 R18 R1 D1 R6 R8 Q10 Q5 Q4 R7 Q8 Q14 Q9 R4 R16 R9 R17 C1 C2 Q1 Outpu Q12 R2 Z1 C R3 Q6 R10 R11 Q7 R15 Q2 Q11 R14 Q13 Note: C1 and C2 are required if regulator is located far from power supply filter and load, or oscillation may induced on the loop. PL79L12A3 Input CYStek Product Specification CYStech Electronics Corp. Ordering Information Device PL79L12AA3 PL79L12BA3 Output Voltage Tolerance 3% 5% Spec. No. : C531A3 Issued Date : 2003.04.08 Revised Date : .. Page No. : 2/3 Electrical Characteristics Vin=-19V, Iout=40mA, 0CTj125C, Cin=0.33uF, Cout=0.1uF (unless otherwise noted) Symbol Parameter Conditions Tj=25C 1mAIo70mA 1mAIo40mA and -14.5VVin-27V Tj=25C, -14.5VVin-27V Tj=25C, -16VVin-27V Tj=25C, 1mAIo100mA Tj=25C, 1mAIo40mA Tj=25C Tj=125C 1mAIo40mA -16VVin-27V Ta=25C, 10Hzf100KHz -15VVin-25V, f=120Hz Tj=25C,Iout=40mA Conditions Tj=25C 1mAIo70mA 1mAIo40mA and -14.5VVin-27V Tj=25C, -14.5VVin-27V Tj=25C, -16VVin-27V Tj=25C, 1mAIo100mA Tj=25C, 1mAIo40mA Tj=25C Tj=125C 1mAIo40mA -16VVin-27V Ta=25C, 10Hzf100KHz -15VVin-25V, f=120Hz Tj=25C,Iout=40mA PL79L12A Units Min Typ Max -11.64 -12.00 -12.36 -11.6 -12.4 V -11.6 -12.4 37 80 42 1.7 250 200 100 50 6.5 6.0 0.2 1.5 mV mV mA mA V dB V Vo Output Voltage Vo Vo IQ IQ Line Regulation Load Regulation Quiescent Current Quiescent Current Change Vn Output Noise Voltage Vin / Vout Ripple Rejection VD Dropout Voltage Symbol Parameter Vo Output Voltage PL79L05B Units Min Typ Max -11.52 -12.00 -12.48 -11.4 -12.6 V -11.4 -12.6 37 80 42 1.7 250 200 100 50 6.5 6.0 0.2 1.5 mV mV mA mA V dB V Vo Vo IQ IQ Line Regulation Load Regulation Quiescent Current Quiescent Current Change Vn Output Noise Voltage Vin / Vout Ripple Rejection VD Dropout Voltage PL79L12A3 CYStek Product Specification CYStech Electronics Corp. TO-92 Dimension 2 Spec. No. : C531A3 Issued Date : 2003.04.08 Revised Date : .. Page No. : 3/3 A B 1 2 3 3 79L12 C D H I E F G 1 Style: Pin 1.GND 2.Vin 3.Vout 3-Lead TO-92 Plastic Package CYStek Package Code: A3 *: Typical DIM A B C D E F Inches Min. Max. 0.1704 0.1902 0.1704 0.1902 0.5000 0.0142 0.0220 *0.0500 0.1323 0.1480 Millimeters Min. Max. 4.33 4.83 4.33 4.83 12.70 0.36 0.56 *1.27 3.36 3.76 DIM G H I 1 2 3 Inches Min. Max. 0.0142 0.0220 *0.1000 *0.0500 *5 *2 *2 Millimeters Min. Max. 0.36 0.56 *2.54 *1.27 *5 *2 *2 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. PL79L12A3 CYStek Product Specification |
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