Rainbow Electronics MAX1611 - Manual (Page 13)

MAX1610/MAX1611
Digitally Controlled CCFL Backlight
Power Supplies
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OSC
5-BIT DAC
+
2.0V
-
÷8
LEVEL
SHIFTER
4.5V
REG
VL
GND
DMOS
POWER
SWITCH
÷5
DIGITAL INTERFACE
UP (SDA)
DN (SCL)
SHDN (SMBSUS)
R
S
4µA
Q
(NOTE) MINDAC
SYNC
SS
OTP
( ) ARE FOR MAX1611
NOTE: CIRCUITRY TO DETECT MINDAC = VL NOT SHOWN. SEE CHOPPING THE LAMP CURRENT SECTION.
5
REF
CC
CSAV
CS
LX
BST
BATT
GM
Σ
Figure 9. Functional Diagram