
Atmel LED Driver-MSL1060
6-string PWM LED Driver with Digitally Compensated, 1.1MHz,
48V Boost Regulator and ±1.5% LED String Current Balance
Key Features
? Drives 6 Strings of up to 12 LEDs per String
? Drives 72 White LEDs at 30mA for 8W Power
? Better than ±1.5% String Current Accuracy
? 4.75V to 36V Wide Input Supply Range
? Boost Regulator with 50V Internal Switch
? 1.1MHz Current Mode PWM Boost
? Up to 92% Boost Regulator Efficiency
? Internal, Automatic Power Supply Management
? Adjustable LED Current up to 30mA Per String
? String Outputs can be Paralleled in Any
Combination to Drive >30mA LEDs
Application Circuit
V IN = 4.75V to 36V
? ALS Interface for Automatic Brightness Setting
? Temperature Sensor Interface for Temp Derating
? Individual O/C and S/C String Fault Detection
? Faulty Strings are Automatically Disabled
? FLTB Logic Output Reports Faults
? Enable Input Allows Logic On/Off Control
? PWM Input Provides Wide Dimming Range
? Adjustable Over-voltage Protection
? -40°C - +85°C Operating Temperature Range
? Lead-free, Halogen-free, RoHS-compliant
V OUT = 48V max
Fault
Alert
VIN
EN
FLTB
OSC
SW
OVP
ILED
Set String
current
….
Up to 12
White
LEDs per
String
.
. . .
ALS or
Temp
IADJ
MSL1060
STR0
STR5
1.5% maximum current
mismatch between
Strings
PWM
GND
Atmel LED Driver-MSL1060
3