Datasheet
5Atmel LED Drivers-MSL1061/MSL1064
FEATURE MSL1061 MSL1064 APPLICATION AND SUITABILITY
I
2
C interface
4 selectable slave addresses by
AD0 pin (0x60, 0x61, 0x62, 0x63)
1 xed slave address (0x62)
Only one MSL1064 is uniquely
addressed on an I
2
C bus
Package
28-lead, 5mm x 5mm TQFN,
0.5mm pitch
24-lead, 5mm x 5mm TQFN,
0.65mm pitch
IPC-
2221A-2003
compliance
0.2mm min gap between SW pins
and adjacent conductors. Compliant
to 100V with board coating, 15V
without coating
0.6mm min total gap between SW
pins and adjacent conductors.
Compliant to 100V with or without
board coating
If compliance is necessary use
the MSL1064 or MSL1061 with
board coating.
Table 1. Atmel LED Drivers-MSL1061 and MSL1064 Comparison
Capabilities With and Without Using the Serial Interface
MSL1061/64 operates as stand alone LED drivers with full digital (PWM) and analog (DAC) LED brightness control
and fault reporting through I/O controls. Alternatively, LED dimming and fault reporting is managed over an I
2
C or SMB
serial interface, allowing software/firmare LED intensity control. More detailed fault management reporting and software
controlled shutdown (Table 2) via the serial interface.
FUNCTION CONTROLS AVAILABLE ON PINS ADDITIONAL CONTROLS AVAILABLE VIA I
2
C
Global on/off control EN pin (Table 3 on page 9) Run mode/sleep mode
Individual LED string on/off control Not available String enables register
Analog LED current adjustment ILED pin (Table 3 on page 8) Current setting register
PWM LED current adjustment PWM pin (Table 3 on page 8)
PWM frequency register
PWM duty ratio register
Ambient light sensor (ALS) and/
or auto-matic temperature LED
current adjustment
IADJ pin (Table 3 on page 9) Current setting register
Fault monitoring
FLTB pin indicates open-string, shorted-
string, and over-temperature faults
Status register identies open/short circuit and over-
temperature faults to individual strings
Table 2. Atmel LED Drivers-MSL1061/64 Stand Alone Capabilities and I
2
C Controlled Features
Atmel LED Drivers-MSL1061/MSL1064
6-string PWM LED Driver with Digitally Compensated, 1.1MHz,
48V Boost Regulator, ±1.5% Current Balance, I
2
C Interface