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LT1086 Series

sn1086 1086ffs

APPLICATIO S

FEATURES

DESCRIPTIO

TYPICAL APPLICATIO

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3-Terminal Adjustable or Fixed

2.85V, 3.3V, 3.6V, 5V, 12V

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Output Current of 1.5A (0.5A for LT1086H)

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Operates Down to 1V Dropout

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Guaranteed Dropout Voltage at Multiple Current Levels

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Line Regulation: 0.015%

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Load Regulation: 0.1%

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100% Thermal Limit Functional Test

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Ripple Rejection >75dB

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Available in 3-Pin TO-220 and 3-Pin DD Packages

The LT

current. All internal circuitry is designed to operate down

to 1V input-to-output differential and the dropout voltage

is fully specified as a function of load current. Dropout is

guaranteed at several operating points up to a maximum

of 1.5V at maximum output current. Dropout decreases at

lower load currents. On-chip trimming adjusts the refer-

ence/ouput voltage to 1%. Current limit is also trimmed,

minimizing the stress on both the regulator and power

source circuitry under overload conditions.

The LT1086 is pin compatible with older 3-terminal adjust-

able regulators. A minimum 10

µF output capacitor is

required on these devices.

The LT1086 offers excellent line and load regulation speci-

fications and ripple rejection exceeds 75dB even at the

maximum load current of 1.5A. The LT1086 is floating

architecture with a composite NPN output stage. All of the

quiescent current and the drive current for the output

stage flows to the load increasing efficiency.

The LT1086 is available in a 3-pin TO-220 package and a

space-saving surface mountable 3-pin DD package.

1.5A Low Dropout Positive

Regulators Adjustable and

Fixed 2.85V, 3.3V, 3.6V, 5V, 12V

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SCSI-2 Active Terminator

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High Efficiency Linear Regulators

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Post Regulators for Switching Supplies

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Constant Current Regulators

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Battery Chargers

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Microprocessor Supply

LT1086 Dropout Voltage

OUTPUT CURRENT (A)

0

0

1

2

0.5

1

LT1086 • TA02

1.5

INDICATES GUARANTEED TEST POINT

–55

0

3.3V AT 1.5A

*MAY BE OMITTED IF INPUT SUPPLY IS WELL

BYPASSED WITHIN 2" OF THE LT1086

LT1086-3.3

LT1086 • TA01

10

µF*

TANTALUM

10

µF

TANTALUM

IN

OUT

GND

5V to 3.3V Regulator

, LTC and LT are registered trademarks of Linear Technology Corporation.