Datasheet

12
Atmel MSL2010 [DATASHEET]
42072A–AVR–05/2013
8. Pinout and Pin Description
8.1 Pinout MSL2010
8.2 Pin Descriptions
1
2
3
4
5
6
18
17
16
15
14
13
7 8 9 10 11 12
24 23 22 21 20 19
FBO
EN
PWM
SCL
SDA
FLTB
S
NC
PVIN
DRV
PGND
CS
VDD AGND VCC AVIN D G
NC
CGND
REXT
TOFF
EAO
FB
MSL2010
(TOP VIEW)
Name Pin Description
FBO 1
Feedback Output
Feedback output from Efficiency Optimizer. Connect FBO to the LED power supply regulation
feedback node to control V
LED
. When unused connect FBO to VCC.
EN 2
Enable Input (Active High)
Drive EN high to turn on the MSL2010, drive EN low to turn it off. For automatic start-up connect EN to
AVIN.
PWM 3
PWM Dimming Input
Drive PWM with a pulse-width modulated signal to control LED brightness. See “PWM and LED
Brightness” on page 17 for details.
SCL 4
Serial Clock Input
SCL is the I²C serial interface clock input. See “I²C Serial Interface” on page 21 details.
SDA 5
Serial Data Input/Output
SDA is the I²C serial interface data I/O. See “I²C Serial Interface” on page 21 details.
FLTB 6
Fault Output
Open Collector FLTB pulls low when an overtemperature is detected (die temperature147C). FLTB
releases when the die temperature falls below 127C.
NC 7, 17
No Internal Connection