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PL1085-5.0 Datasheet(PDF) 1 Page - Cystech Electonics Corp. |
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PL1085-5.0 Datasheet(HTML) 1 Page - Cystech Electonics Corp. |
1 / 4 page CYStech Electronics Corp. Spec. No. : C540J3 Issued Date : 2003.06.25 Revised Date : Page No. : 1/4 PL1085J3 CYStek Product Specification 3A Low Dropout Positive Voltage Regulator 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. 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 TO-252 VREF Vin=5V Vout=3.3V C2 10μF R1 125Ω 1% R2 205Ω 1% C1 10μF ADJ Adjustable Voltage Regulator GND VREF=VOUT-VADJ=1.25V(typ) VOUT=VREF(1+R1/R2)+IADJ ×R2 IADJ=55µA(typ.) (1)C1 needed if device is far away from filter capacitors. (2)C2 required for stability. C2 10μF C1 10μF Fixed Voltage Regulator Vout=3.3V Vin=5V |
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