AME9003 Datasheet, PDF (25/39 Pages) Asahi Kasei Microsystems – CCFL Backlight Controller

AME, Inc.
AME9003
Preliminary
Figure 14. VCO Detail
CCFL Backlight Controller
VDD
1.5V
+
-
RT2
R2
VSS
3.0V
0
I_in
50:1
curent
divider
I_out
0
+
-
1µA
Vco_Control
RAMP
CLK
SSV
Inside chip
Outside chip
10µA
RDELTA
2.5V
OVPL
R3
V_DD
FCOMP
C32
1µF
OVPH
3.3V
Inside Chip
Figure 15. LDO Detail
Outside Chip
1
V _DDOK
2
To Fault
-
Logic
2.5V
+
-
EN
PNP
VDD
CE
Start
UP
R4
Q1
V_BATT
27 < V_BATT < 24
To user
enable circuitry
C7
4.7µF
25