AME, Inc.
1
AME9001
CCFL Backlight Controller
l Small package: 24 pin QSOP
l Drives multiple tubes
l Automatically checks for common fault
conditions
l 7.0V < Vbatt < 24V
l Low component count
l Low Idd < 3.5mA
l <1uA shutdown mode
The AME9001 controller provides a cost efficient means
to drive single or multiple cold cathode fluorescent lamps
(CCFL). Specifically the AME9001 drives 3 external
MOSFETs that, in turn, drive a wirewound transformer
that is coupled to the CCFL.
The AME9001 includes features such as soft start, duty
cycle dimming control, and fault detection. It is designed
to work with input voltages from 7V up to 24V. When
disabled the circuit goes into a zero current mode.
For applications that use a piezoelectric transformer
please look at the AME9000.
l Notebook computers
l LCD/TFT displays
n General Description
n Features
n Applications
n Pin Configuration
AME9001
24PIN QSOP
1. VREF
2. CE
3. SSC
4. RDELTA
5. FAULTB
6. RT2
7. VSS
8. OVP
9. CS
10.CSCOMP
11.CSDET
12.NC
13. OUTC
14. OUTAPB
15. OUTA
16. VBATT
17. VDD1
18. VDD
19. CT1
20. FB
21. COMP
22. BRIGHT
23. SSV
24. PNP
1 2 3 4 5 6 7 8 9 10
24 23 22 21 20 19 18 17 16 15
11 12
14 13
AME9001
AME
9001
Controller
External
Components CCFL Array
N
+
Resistors
+
Capacitors
LIGHT
n System Block Diagram