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Atmel LED Driver-MSL1060
6-string PWM LED Driver with Digitally Compensated, 1.1MHz,
48V Boost Regulator and ±1.5% LED String Current Balance
NAME
OVP
N/C
SW
N/C
EN
VIN
GND
MSL1060
18
19
20, 21
22
23
24
Exposed pad
DESCRIPTION
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
No internal connection. Leave unconnected
Drain of the internal boost power MOSFET switch
Connect all SW leads together and to the boost regulator inductor and rectifier
No internal connection. Leave unconnected
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 100k? resistor
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
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 A = T MIN to T MAX .............................................. -40°C to +85°C
Junction Temperature ............................................................................................................................................................... +125°C
Storage Temperature Range ........................................................................................................................ -65°C to +125°C
Lead Soldering Temperature, 10s .................................................................................................................................. +300°C
Atmel LED Driver-MSL1060
9
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