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ZR78L04 Datasheet(PDF) 2 Page - Zetex Semiconductors |
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ZR78L04 Datasheet(HTML) 2 Page - Zetex Semiconductors |
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2 / 18 page  ZR78L SERIES ZR78L028 TEST CONDITIONS (Unless otherwise stated):Tj=25°C, IO=100mA, Vin=6.85V SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNITS VO Output Voltage 2.78 2.85 2.92 V IO=1 to 200mA τ 2.736 2.964 V Vin=4.85 to 20V IO=1 to 100mA τ 2.736 2.964 V ∆VO Line Regulation Vin=4.85 to 20V 10 40 mV ∆VO Load Regulation IO=1 to 200mA IO=1 to 100mA 5 2 25 mV mV lq Quiescent Current τ 350 600 µA ∆lq Quiescent Current Change IO=1 to 200mA Vin=4.85 to 20V 100 100 µA µA Vn Output Noise Voltage f=10Hz to 10kHz 75 µV rms ∆Vin /∆VO Ripple Rejection Vin=5.85 to 18V f=120Hz 48 62 dB Vin Input Voltage Required To Maintain Regulation 4.85 4.55 V ∆VO /∆T Average Temperature Coefficient of VO IO=5.0mA τ 0.1 mV/°C τ=Tj=-55 to 125°C ELECTRICAL CHARACTERISTICS: Notes: 1. The maximum operating input voltage and output current of the device will be governed by the maximum power dissipation of the selected package. Maximum package power dissipation is specified at 25 °C and must be linearly derated to zero at Tamb=125°C. 2. The following data represents pulse test conditions with junction temperatures as indicated at the initiation of the test. Continuous operation of the devices with the stated conditions might exceed the power dissipation limits of the chosen package. 3. Maximum power dissipation, for the SOT223 and SO8 packages, is calculated assuming that the device is mounted on a PCB measuring 2 inches square. 4 . The shut down feature of the device operates if its temperature exceeds its design limit as might occur during externalfaults,short circuitsetc.Ifthe regulator is supplied from an inductive source then a large voltage transient, on the regulator input, can result should the shut down circuit operate. It is advised that a capacitor (1 µF or greater) should be applied across the regulator input to ensure that the maximum voltage rating of the device is not exceeded under shutdown conditions. ABSOLUTE MAXIMUM RATING Input voltage 20V Output Current(Io) 200mA Operating Temperature -55 to 125°C Storage Temperature -65 to 150°C Power Dissipation (Tamb=25°C) SOT223 2W(Note 3) TO92 600mW S08 780mW(Note 3) |
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