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Atmel LED Driver-MSL2162
16-string White and RGB LED Driver with
Adaptive Configuration, EEPROM, and SPI Bus
NO.
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50
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58
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60
NAME
EN
VIN
VDD
S0
G0
D0
S1
G1
D1
S2
G2
D2
DESCRIPTION
Enable input (active high)
Drive EN high to turn on the MSL2162, drive EN low to turn off the MSL2162.
For automatic start-up, connect EN to VIN. When EN is low, the entire device, including the serial
interface, is turned off. Drive EN high to initiate a boot load of the EEPROM data into the control registers
to set the startup condtions.
Supply voltage input
Connect a 12V ±10% supply to VIN. Bypass VIN to ground with a 10μF ceramic capacitor placed close to VIN.
2.5V internal LDO regulator output
VDD powers internal logic. Bypass VDD to ground with a 4.7μF ceramic capacitor placed close to VDD.
Current sense input 0
Current sense input for LED string 0.
Connect S0 to the source of the external MOSFET and to the current sense resistor for LED string 0.
The full-scale LED current threshold is 500mV is across the current sense resistor.
Gate output 0
Gate drive output for external MOSFET 0.
Connect G0 to the gate of the external MOSFET driving LED string 0.
Drain sense input 0
Drain sense input for external MOSFET 0.
Connect D0 through a 10MΩ resistor to the drain of the external MOSFET driving LED string 0.
Current sense input 1
Current sense input for LED string 1.
Connect S1 to the source of the external MOSFET and to the current sense resistor for LED string 1.
The full-scale LED current threshold is 500mV is across the current sense resistor.
Gate output 1
Gate drive output for external MOSFET 1.
Connect G1 to the gate of the external MOSFET driving LED string 1.
Drain sense input 1
Drain sense input for external MOSFET 1.
Connect D1 through a 10MΩ resistor to the drain of the external MOSFET driving LED string 1.
Current sense input 2
Current sense input for LED string 2.
Connect S2 to the source of the external MOSFET and to the current sense resistor for LED string 2.
The full-scale LED current threshold is 500mV is across the current sense resistor.
Gate output 2
Gate drive output for external MOSFET 2.
Connect G2 to the gate of the external MOSFET driving LED string 2.
Drain sense input 2
Drain sense input for external MOSFET 2.
Connect D2 through a 10MΩ resistor to the drain of the external MOSFET driving LED string 2.
Atmel LED Driver-MSL2162
11
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