LTM8042/LTM8042-1

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80421fa

TYPICAL APPLICATION

FEATURES

DESCRIPTION

µModule Boost LED Driver

and Current Source

specifically designed to drive LEDs up to 1A, while the

LTM8042-1 drives up to 350mA. It combines a boost

power topology with a unique current loop to operate as

a constant-current source. The PWM input provides as

much as 3000:1 LED dimming, while 10:1 analog dimming

can be accomplished by a single resistor or analog voltage

applied to the CTL pin. As with any boost topology, the

LTM8042/LTM8042-1 has an uninterrupted current path

between its input and output and is thus intolerant to a

short-circuit or overload from the output to ground.

# WHITE LEDS

LED CURRENT

6

1A

LTM8042

7

350mA

LTM8042-1

8

1A

LTM8042

9

350mA

LTM8042-1

The LTM8042/LTM8042-1 is packaged in a thermally

enhanced, compact overmolded land grid array (LGA)

package. The LTM8042/LTM8042-1 is Pb-free and a RoHS

compliant.

μModule Boost LED Driver, Driving 8 White LEDs at 1A

APPLICATIONS

Operation from 3V to 30V

Transient Protection to 40V

P-channel MOSFET

Surface Mount LGA Package

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

and True Color PWM is a trademark of Linear Technology Corporation. All other trademarks are

the property of their respective owners.

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80421 TA01b

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80421 TA01a

LTM8042

RT

GND CTL

RUN

PWM

SYNC

TGEN

SS

16V TO 26V

TG

BSTOUT/BKIN

4.7μF

33.2k

4.7μF

1A

UP TO 26.8V