AME9001AETH AME, AME9001AETH Datasheet - Page 14
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AME9001AETH
Manufacturer Part Number
AME9001AETH
Description
CCFL Inverters & Accessories Backlight Controller
Manufacturer
AME
Specifications of AME9001AETH
Function
Backlight Controller
Input Voltage
24 V
Output Voltage
5.35 V
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
AME9001
14
Control Logic
Comparator
Always Hi
To PWM
To Fault
CHOP
AME, Inc.
Brightness
Outside Chip
voltage
control
-
+
-
Inside Chip
-
C4
BRIGHT
2.5V
250mV
CSDET
COMP
CT
FB
Figure 11. Alternative Brightness Control
Outside Chip
Inside Chip
BRIGHT
Figure 10. Duty Cycle Dimming
CT1
5V
RF
T1
R
2R
500mV
R
R
2
1
+
-
3V
+
-
+
-
Maximum current=
Minimum current=
This method disables
duty cycle dimming
CHOP causes the CCFL
to turn on and off
periodically.
CCFL Backlight Controller
S
R
CHOP
(R
R
1
1
+R
Q
//(2R+R)
K
K
2
)//(2R+R)