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| CYStech Electronics Corp. 3-TERMINAL NEGATIVE VOLTAGE REGULATOR Spec. No. : C538E3 Issued Date : 2003.04.08 Revised Date : Page No. : 1/4 PL7918XE3 Description The PL7918XE3 series of three-terminal negative regulators are available in the TO-220AB package. These regulators can provide TO-220AB local on-card regulation, eliminating the distribution problems associated with single point regulation. Each employs internal current limiting, thermal shutdown and safe operating area protection, making it essentially indestructible. If adequate heat sinking is provided, they can deliver over 1A output current. Although designed primarily as fixed voltage regulators, these devices can be used with external components to obtain adjustable voltages and currents. PL7918XE3 is characterized for operation from 0C to +125C, and if operating temperature is always high, please refer to the power dissipation curve. Absolute Maximum Ratings (Ta=25C) * Input Voltage ...................................................................................................................... -35 V * Total Power Dissipation .................................................................................... Internally limited * Operating Junction Temperature ....................................................................... 0 C to +125 C * Maximum Junction Temperature ..................................................................................... 125 C * Storage Temperature Range .......................................................................... -55 C to +150 C * Lead Temperature (Soldering 10S) ................................................................................. 230 C Typical Application Schematic Diagram 1.4k GND Vin 2 PL7918 1 3 Vout 4K 7K 5K 15K C1 C2 3K 10K Vout 6.2V Note: Bypass Capacitors are recommended for optimum stability and transient response and should be located as close as possible to the regulator. 750 Vin 1K 6K 20K 20K 20pF 10pF 600 15K 20K 20K 5K 150 0.2 PL7918E3 CYStek Product Specification CYStech Electronics Corp. Electrical Characteristics Vin=-27V, Io=500mA, Cin=2.2uF, Cout=1uF, 0CTj125C (unless otherwise noted) Spec. No. : C538E3 Issued Date : 2003.04.08 Revised Date : Page No. : 2/4 Symbol Vo Vo Vo IQ IQ Vo / T Vn RR VD Isc Ipk Symbol Vo Vo Vo IQ IQ Vo / T Vn RR VD Isc Ipk Parameter Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Output Current Parameter Output Voltage Line Regulation Load Regulation Quiescent Current Quiescent Current Change Output Voltage Drift Output Noise Voltage Ripple Rejection Dropout Voltage Short Circuit Current Peak Output Current Conditions Tj=25C PD15W, 5mA IO 1A -22VVin -33V Tj=25C, -21V Vin-33V Tj=25C, -24VVin-30V 5mA IO1.5A 250mA IO750mA IO1A, Tj=25C 5mA IO1A -22VVin-33V Io=5mA Ta=25C, 10Hz f 100KHz Vi=10V, f=120Hz Tj=25C, IO=1A Tj=25C, Vin=-35V Tj=25C Conditions Tj=25C PD15W, 5mA IO 1A -22VVin -33V Tj=25C, -21V Vin-33V Tj=25C, -24VVin-30V 5mA IO1.5A 250mA IO750mA IO1A, Tj=25C 5mA IO1A -22VVin-33V Io=5mA Ta=25C, 10Hz f 100KHz Vi=10V, f=120Hz Tj=25C, IO=1A Tj=25C, Vin=-35V Tj=25C PL7918A Min Typ Max -17.64 -18 -18.36 -17.46 54 1.3 -18 3 -1 300 68 2 2.2 2.2 -18.54 360 180 360 180 8 0.5 1.0 - Units V mV mV mA mA mV/C V dB V A A Units V mV mV mA mA mV/C V dB V A A PL7918B Min Typ Max -17.28 -18 -18.72 -17.1 54 1.3 -18 3 -1 300 68 2 2.2 2.2 -18.9 360 180 360 180 8 0.5 1.0 - PL7918E3 CYStek Product Specification CYStech Electronics Corp. Characteristic Curves Average Case Power Dissipation as A Function of Ambient Temperauture Spec. No. : C538E3 Issued Date : 2003.04.08 Revised Date : Page No. : 3/4 Peak Output Current as A Function of InputOutput Differentail Voltage 2.5 100 2 Power Dissipation Output Current 10 1.5 1 1 0.5 0.1 25 50 75 100 125 150 0 0 3 6 9 12 15 18 21 24 27 30 Ambient Temperature (C) Input-Output Voltage Differential Ripple Rejection as A Function of Frequency 100 80 80 Ripple Rejection as A Function of Output Voltage Ripple Rejection (dB) 60 Ripple Rejection (dB) 70 60 40 20 50 0 10 100 1000 10000 100000 40 2 4 6 8 10 12 14 16 18 20 22 Frequency Output Voltage Output Voltage as A Function of Junction Temperature 6.26 6.22 Output Voltage (Volts) 6.18 6.14 6.1 6.06 -25 0 25 50 75 100 125 175 Junction Temperature (C) PL7918E3 CYStek Product Specification CYStech Electronics Corp. TO-220AB Dimension Marking: A D B E C Spec. No. : C538E3 Issued Date : 2003.04.08 Revised Date : Page No. : 4/4 7918 H I G 4 P M 3 2 1 N K Style: Pin 1.Gnd 2.Vin 3.Vout 4.Vin 3-Lead TO-220AB Plastic Package CYStek Package Code: E3 O *: Typical DIM A B C D E G H Inches Min. Max. 0.2197 0.2949 0.3299 0.3504 0.1732 0.185 0.0453 0.0547 0.0138 0.0236 0.3803 0.4047 *0.6398 Millimeters Min. Max. 5.58 7.49 8.38 8.90 4.40 4.70 1.15 1.39 0.35 0.60 9.66 10.28 *16.25 DIM I K M N O P Inches Min. Max. *0.1508 0.0295 0.0374 0.0449 0.0551 *0.1000 0.5000 0.5618 0.5701 0.6248 Millimeters Min. Max. *3.83 0.75 0.95 1.14 1.40 *2.54 12.70 14.27 14.48 15.87 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. PL7918E3 CYStek Product Specification |
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