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LT3088 - 800mA Single Resistor Rugged Linear Regulator

The LT®3088 is an 800mA low dropout linear regulator designed for rugged industrial applications. A key feature of the IC is the extended safe operating area (SOA). The LT3088 can be paralleled for higher output current or heat spreading. The device withstands reverse input and reverse output-to-input voltages without reverse current flow.

The LT3088’s precision 50μA reference current source allows a single resistor to program output voltage to any level between zero and 34.5V. The current reference architecture makes load regulation independent of output voltage. The LT3088 is stable with or without input and output capacitors.

Internal protection circuitry includes reverse-battery and reverse-current protection, current limiting and thermal limiting. The LT3088 is offered in the 3-lead SOT-223, 3-lead DD-Pak, and an 8-lead 3mm × 3mm DFN package.

Features Extended Safe Operating Area Maximum Output Current: 800mA Stable with or without Input/Output Capacitors Wide Input Voltage Range: 1.2V to 36V Single Resistor Sets Output Voltage Output Adjustable to 0V 50μA SET Pin Current: 1% Initial Accuracy Output Voltage Noise: 27μVRMS Parallel Multiple Devices for Higher Current, Heat Spreading and Lower Noise Pin Compatible Upgrade to LT1117 Reverse-Battery and Reverse-Current Protection <1mV Typical Load Regulation Independent of VOUT <0.001%/V Typical Line Regulation 3-Lead SOT-223, 3-Lead DD-Pak, 8-Lead 3mm × 3mm DFN Packages Typical Application

Applications All Surface Mount Power Supply Rugged Industrial Power Supply Post Regulator for Switching Supplies Low Output Voltage Supply Intrinsic Safety Applications Packaging

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