LT3080-1

1

30801fa

+

–

LT3080-1

IN

4.8V TO 28V

OUT*

25mΩ

10μF

3.3V

2.2A

*OUTPUTS CAN BE

DIRECTLY MOUNTED

TO POWER PLANE

30801 TA01

165k

SET

1μF

+

–

LT3080-1

IN

OUT*

25mΩ

SET

TYPICAL APPLICATION

APPLICATIONS

Connection to Power Plane for Higher Current

and Heat Spreading

Protected

FEATURES

DESCRIPTION

Parallelable 1.1A

Adjustable Single Resistor

Low Dropout Regulator

incorporates an internal ballast resistor to allow direct

paralleling of devices without the need for PC board trace

resistors. The internal ballast resistor allows multiple

devices to be paralleled directly on a surface mount

board for higher output current and power dissipation

while keeping board layout simple and easy. The device

brings out the collector of the pass transistor to allow low

dropout operation—down to 350mV—when used with

multiple input supplies.

The LT3080-1 is capable of supplying a wide output volt-

age range. A reference current through a single resistor

programs the output voltage to any level between zero

and 36V. The LT3080-1 is stable with 2.2μF of ceramic

capacitance on the output, not requiring additional ESR

as is common with other regulators.

Internal protection includes current limiting and thermal

limiting. The LT3080-1 regulator is offered in the 8-

lead MSOP (with an Exposed Pad for better thermal

characteristics) and 3mm × 3mm DFN packages.

Paralleling Regulators

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

trademarks are the property of their respective owners.

Offset Voltage Distribution

2

30801 TA01b

–1

0

1

–2

N = 13250