μModule (Power Module) Boost LED Driver and Current Source

The LTM8042 is a complete μModule® (power module) Boost LED Driver 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

12VIN

24VIN

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.

Applications

* Display Backlighting

* Automotive and Avionic Lighting

* Illumination

* Scanners

* True Color PWM™ with 3000:1 Dimming Ratio

* Operates in Boost, Buck Mode or Buck-Boost Mode

* Wide Input Voltage Range:

* Operation from 3V to 30V

* Transient Protection to 40V

* Gate Driver for Optional PWM Dimming with P-channel MOSFET