Datasheet

3Atmel LED Driver-MSL1060
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
Application Circuit
• 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
• 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
STR0
STR5
IADJ
VIN
SW
.
.
.
.
EN
PWM
FLTB
ILED
GND
M SL1060
OSC
Fault
Alert
Set String
current
1.5% maximum current
mismatch between
Strings
Up to 12
White
LEDs per
String
ALS or
Temp
V
IN
= 4.75V to 36V
V
OUT
= 48V max
OVP
….