Rainbow-electronics MAX1839 Manual do Utilizador descarregar pdf (Página 12)

MAX1739/MAX1839

†

Wide Brightness Range

CCFL Backlight Controllers

12 ______________________________________________________________________________________

BUCK

ENABLE

MINDAC = VL?

Y = 1, N = 0

SUPPLY

SH/SUS

REF

BST

DL1

DL2

BATT

MINDAC

REF

CSAV

CCI

CCV

450mV

500mV

CCV CLAMP

CTFB

0.6V

SYNC

REF

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

1 2 ... 7 8 9 10 11 12 13 14 15 16 17 ... 25 26

MAX1739/MAX1839 1
Wide Brightness Range 1
CCFL Backlight Controllers 1

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