Datasheet

10
Atmel MSL3086/MSL3088 Datasheet
8-String 60mA LED Drivers with Integrated Boost Controller and Phase Shifted Dimming
6.0 Block Diagram
Figure 6.1. Block Diagram
MSL3086/MSL3087/MSL3088 Datasheet
Page 10 of 26
© Atmel Inc., 2011. All rights reserved.
Block Diagram
GATE DRIVE
REF
LED
SUPPLY
5V – 32V
5V
VIN
PVIN
REG
V
DD
FREQ SET
DUTY
CYCLE SET
STRING
DRIVE LOGIC
SCTH (SYNC)
PWM
FLTB
SCL
SDA
EN
ILED
ONE OF 8
STRING DRIVERS
SHOWN
STR0
STR1
STR2
STR3
STR4
STR5
STR6
STR7
GND EP PGND
COMP
FB
GATE
MSL3086
(MSL3088)
FAULT DETECT
CGND
C
BULK
C
IN
L1
Q1
D1
R
CS
C
OUT1
C
OUT2
R
TOP
R
BOTTOM
R
COMP
C
COMP1
C
COMP2
R
ILED
C1
C2 C3
CS
EFFICIENCY
OPTIMIZER
EO DAC
V
LED
Figure 1. MSL3086/MSL3088 Block Diagram