Datasheet

8 Atmel LED Driver-MSL2100
Absolute Maximum Ratings
Voltage (With Respect to GND)
VIN, EN, D0-D7, G0-G7 .............................................................................................................................................. -0.3V to +16V
SDA, SCL, AD0, AD1, FLTB ......................................................................................................................................-0.3V to +5.5V
PHI, GSC, PWM, S0-S7, FBI1, FBI2, FBI3, FBO1, FBO2, FBO3 ............................ -0.3V to (V
DD
+ 0.3V)
VDD ............................................................................................................................................................................................-0.3V to +2.75V
Current (Into Pin)
VIN ...................................................................................................................................................................................................................... 50mA
GND ...............................................................................................................................................................................................................-500mA
All other pins................................................................................................................................................................................................20mA
Continuous Power Dissipation (See Note 8, Note 9)
48-pin, 6mm x 6mm x 0.85mm QFN (derate 45.5mW/°C above 70°C) ............................... 2500mW
Ambient Operating Temperature Range T
A
= T
MIN
to T
MAX
.............................................. -40°C to +85°C
Junction Temperature ............................................................................................................................................................... +125°C
Storage Temperature Range ........................................................................................................................ -65°C to +125°C
Lead Soldering Temperature, 10s .................................................................................................................................. +300°C
PIN NAME DESCRIPTION
39 EN
Enable input (active high)
Drive EN high to turn on the MSL2100, and drive it low to turn it off.
For automatic startup, connect EN to VIN through a 100kΩ resistor.
41, 45 N/C No internal connection. Recommended to leave open.
42, 43, 44 CGND
Connect to ground
Connect CGND to system ground, to GND, and to EP using short, wide traces.
46 PHI
Phase synchronization input
Drive PHI with an external signal from 40Hz to 10kHz to synchronize the PWM dimming to the signal at PHI.
Connect PHI to GND if unused.
47 GSC
Gate shift clock input
Drive GSC with the gate shift clock of the video signal, up to 5MHz. GSC sets the resolution of PWM dimming.
Connect GSC to GND if unused.
48 PWM
PWM input
Drive PWM with a pulse-width-modulated signal with a duty cycle of 0% to 100% and frequency of 20Hz to 50kHz
to control the brightness of all LED strings.
Exposed pad EP
Power ground
Connect EP to system ground, GND, and CGND using short, wide traces.
EP offers thermal relief to the die.