DC995A

LINEAR TECHNOLOGY DC995A Evaluation Board, Edd LDO, 1.1A Output Current, Single Resistor Programs Output Voltage

The is a demonstration circuit featuring LT3080EDD low dropout regulator. The LT3080EDD is a 1.1A low dropout linear regulator that can be paralleled to increase output current or spread heat in surface mounted boards. Architected as a precision current source and voltage follower, it allows this new regulator to be used in many applications requiring high current, adjustability to zero output and no heat sink. Also the device brings out the collector of the pass transistor to allow low dropout operation when used with multiple supplies. By using a reference current through a single resistor, the output voltage can be programmed to any level between zero and 36V. The DC995A has a reduced input voltage 25V due to input capacitor voltage rating. The DC995A is capable of delivering up to 1.1A output current. Therefore, the DC995A can be used as a high current linear regulator, post regulator for switching supply, variable voltage supply or low output voltage power supply.

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Output voltage of 1.8V ±3%

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Outputs may be paralleled for higher current and heat spreading

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Single resistor programs output voltage

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1% initial accuracy of SET pin current

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Less than 1mV load regulation

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Less than 0.001%/V line regulation

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Minimum load current of 0.5mA

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Stable with 2.2µF minimum ceramic output capacitor

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Current limit with foldback and overtemperature protected

Make sure the power dissipation is limited below the thermal limit.