Philips 32PFL4508 - LED Backlight Drive Block Diagram

9-4
4. LED Backlight Drive Block Diagram
IC1001 (LED BACKLIGHT DRIVER)
OVP
CN1001
DRIVE
Q1001
CONTROL LOGIC
4 9 8 6 1
14
2
DRIVE 5
ILED16 VLED4 ILED17 ILED22 ILED21
POWER SUPPLY CBA
LCD PANEL ASSEMBLY
PROTECT3
BACKLIGHT-ADJ BACKLIGHT-SW
TO SYSTEM CONTROL BLOCK DIAGRAM
P-ON+21V
PL13.9BLBD