AME9001 Datasheet, PDF (6/27 Pages) Analog Microelectronics – CCFL BACKLIGHT CONTROLLER

AME, Inc.
AME9001
CCFL Backlight Controller
n Block Diagram
Figure 1. AME9001 Block Diagram
C2
1uF
TO CHIP
ENABLE LOGIC
1
VREF ¹
0
3.4V
REFERENCE
2
2
CE _{1uA 150uA}
C3
22nF
3
SSC ³
Vbatt
R3
1.2Meg
4
4
RDELTA
C31
0.1µF
5
FAULTB
F_RANGE
RAMP
F_MIN
VCO
VCO_CONTROL
CLK
VREF _5.0V PNP
VDDOK _LDO
CLAMP1
+
-
24
PNP
R4
2k
Q1
23
SSV
C14
1000pF
22
BRIGHT
2.5V +
21
-+
-
EA1
COMP
C8
47nF
R7
20
30k
FB
7 - 24V
TO BRIGHTNESS
CONTROL VOLTAGE
6
RT2
R2
56k
SLOW
RAMP
GEN.
19
CT1 _C4
0.01uF
7
VSS
R35
8
OVP
R34
9
CS
CLK
FIRST
CE
VDDOK
OVP _FAULT CHOP
SSC LOGIC NORM
CSDET
10
CSCOMP
11
CSDET
EA2
-
1.25V
+
12
NC
+-
18
VDD
17
VDD1
C7
4.7uF
16
VBATT
1
PWM
0
DUTY
5
OUTA
2
CHOP
6
OUTAPB
OUTPUT
DRIVER
7
OUTC
15
OUTA
14
OUTAPB
13
OUTC
Q2
C5
10uF
D6
T1
Q3-1
Q3-2
D5 _D4
R10
604
R9
249
6