9

Atmel LED Driver-MSL1060

NAME

MSL1060

DESCRIPTION

OVP

18

Overvoltage detection input

Connect to a resistive voltage divider from the boost output voltage to OVP to set the overvoltage

protection set point.The OVP threshold is 1.28V

N/C

19

No internal connection.

Leave unconnected

SW

20, 21

Drain of the internal boost power MOSFET switch

Connect all SW leads together and to the boost regulator inductor and rectifier

N/C

22

No internal connection.

Leave unconnected

EN

23

Active high enable input

Drive EN high to turn on the MSL1060, and drive it low to turn it off

For automatic startup, connect EN to VIN through a 100kΩ resistor

VIN

24

Supply voltage input

Connect the input supply voltage to VIN

VIN powers the internal LDO regulator that powers VCC.

Bypass VIN to GND with a 1µF or greater ceramic capacitor

GND

Exposed pad

Ground

Absolute Maximum Ratings

Voltage (With Respect to GND Exposed Pad on Package Underside)

VIN .................................................................................................................................................................................................. -0.3V to +40V

VCC, EN...........................................................................................................................................................................................-0.3V to +8V

VDD, OVP, IADJ, FLTB, ILED, OSC, PWM....................................................................................................-0.3V to +3.6V

SW.................................................................................................................................................................................................. -0.3V to +50V

STR0, STR1, STR2, STR3, STR4, STR5......................................................................................................... -0.3V to +45V

Current (Into Lead)

SW............................................................................................................................................................................................................................. ±3A

STR0, STR1, STR2, STR3, STR4, STR5.......................................................................................................................... ±35mA

All other leads......................................................................................................................................................................................... ±20mA

Continuous Power Dissipation at 70°C

24-lead TQFN (see Note 2, Note 3).......................................................................................................................... 2286mW

Ambient Operating Temperature Range T

Junction Temperature ............................................................................................................................................................... +125°C

Storage Temperature Range........................................................................................................................ -65°C to +125°C

Lead Soldering Temperature, 10s..................................................................................................................................+300°C

Atmel LED Driver-MSL1060

6-string PWM LED Driver with Digitally Compensated, 1.1MHz,

48V Boost Regulator and ±1.5% LED String Current Balance