Datasheet

9Atmel LED Drivers-MSL2160/MSL2161
PIN
PIN NAME
PIN DESCRIPTION
MSL2161 MSL2160
11 D7 D7
Drain sense input 7
Drain sense input for external MOSFET 7.
Connect D7 through a 10MΩ resistor to the drain of the external MOSFET driving LED string 7.
If unused, connect D7 to ground.
12 NC MISO
MSL2161: No connect
Make no connection to NC.
MSL2160: Master input slave output
MISO is the SPI serial data output.
13 SDA MOSI
MSL2161: I²C serial data I/O
SDA is the data I/O for the I²C serial interface.
MSL2160: Master output slave input
MOSI is the SPI serial data input.
14 SCL SCK
MSL2161: I²C serial clock input
SCL is the clock input for the I²C serial interface.
MSL2160: SPI serial shift clock
SCK is the clock input for the SPI bus.
15 GND CSB
MSL2161: Ground
Connect GND to system ground and to EP with short, wide traces.
MSL2160: Chip select bar
CSB is the chip select input for SPI transactions. CSB is active low.
16 FLTB FLTB
Fault indication output (active low)
Open drain output FLTB sinks current to GND whenever a fault is detected and veried.
FLTB remains low until the fault registers are read, and reasserts if the fault persists.
17 ADDR ADDR
Slave ID selection inputs
Connect ADDR to GND through a resistor to set the device address for the serial interface.
18 FBO3 FBO3
Efciency Optimizer output 3
Connect FBO3 to the third power supply’s feedback node.
Connect FBO3 to GND if unused.
19 FBO2 FBO2
Efciency Optimizer output 2
Connect FBO2 to the second power supply’s feedback node. Connect FBO2 to GND if unused.
20 FBO1 FBO1
Efciency Optimizer output 1
Connect FBO1 to the rst power supply’s feedback node. Connect FBO1 to GND if unused.
21 S8 S8
Source sense input 8
Source sense input for external MOSFET 8.
Connect S8 to the source of the external MOSFET and to the current sense resistor for LED string 8.
The full-scale LED current threshold is reached when 500mV is across the current sense resistor.
If unused, connect S8 to ground.
22 G8 G8
Gate output 8
Gate drive output for external MOSFET 8.
Connect G8 to the gate of the external MOSFET driving LED string 8.
If unused, leave G8 unconnected.
23 D8 D8
Drain sense input 8
Drain sense input for external MOSFET 8.
Connect D8 through a 10MΩ resistor to the drain of the external MOSFET driving LED string 8.
If unused, connect D8 to ground.
Atmel LED Drivers-MSL2160/MSL2161
16-string, White and RGB LED Drivers with Adaptive Configuration,
EEPROM, and SPI/I
2
C/SMBus Serial Interface