LT3088

1

3088fb

TYPICAL APPLICATION

FEATURES

DESCRIPTION

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.Thedevicewithstandsreverseinputandreverse

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.

Wide Safe Operating Area Supply

APPLICATIONS

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Extended Safe Operating Area

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Maximum Output Current: 800mA

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Stable with or without Input/Output Capacitors

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Wide Input Voltage Range: 1.2V to 36V

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Single Resistor Sets Output Voltage

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Output Adjustable to 0V

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50µA SET Pin Current: 1% Initial Accuracy

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Parallel Multiple Devices for Higher Current, Heat

Spreading and Lower Noise

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Pin Compatible Upgrade to LT1117

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Reverse-Battery and Reverse-Current Protection

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<0.001%/V Typical Line Regulation

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3-Lead SOT-223, 3-Lead DD-Pak, 8-Lead 3mm ×

3mm DFN Packages

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All Surface Mount Power Supply

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Rugged Industrial Power Supply

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Post Regulator for Switching Supplies

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Low Output Voltage Supply

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Intrinsic Safety Applications

L

, LT, LTC, LTM, Linear Technology and the Linear logo are registered trademarks of Linear

Technology Corporation. All other trademarks are the property of their respective owners.

SET Pin Current

3088 TA01a

IN

10µF*

*OPTIONAL

OUT

+

–

LT3088

1.5V

800mA

750*

SET

30.1k

50µA

TEMPERATURE (°C)

–75 –50

49.0

49.2

49.6

49.8

50.0

51.0

50.4

0

50 75

3088 G01

49.4

50.6

50.8

50.2

–25

25

100 125

175

150