Rainbow Electronics MAX1839 - Manual (Page 12)

MAX1739/MAX1839
†
Wide Brightness Range
CCFL Backlight Controllers
12 ______________________________________________________________________________________
BUCK
ENABLE
MINDAC = VL?
Y = 1, N = 0
SUPPLY
CS CS
SH/SUS
REF BST DH LX DL1 DL2 VL
BATT
MINDAC
REF
CSAV
CCI CCV
450mV
500mV CCV CLAMP
CTFB
0.6V
SYNC
CS
REF
VL
VL
LAMP CURRENT AND
DPWM CONTROL
ROYER OSC
DPWM OSC
PEAK
DETECTOR
GND
SMBus
GMI
GMV
PK_DET_CLAMP
BUCK REGULATOR
PWM CONTROL
PWM RAMP GENERATOR
CRF/SDA CTL/SCL
MODE
Figure 2. Functional Diagram