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PDF AME9001 Data sheet ( Hoja de datos )
| Número de pieza | AME9001 | |
| Descripción | CCFL BACKLIGHT CONTROLLER | |
| Fabricantes | Analog Microelectronics | |
| Logotipo |  |
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AME, Inc.
AME9001
n General Description
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.
n Features
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
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CCFL Backlight Controller
n Pin Configuration
24 23 22 21 20 19 18 17 16 15 14 13
AME9001
1 2 3 4 5 6 7 8 9 10 11 12
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
n System Block Diagram
Controller
External
Components
CCFL Array
n Applications
l Notebook computers
l LCD/TFT displays
AME
9001
+
Resistors
Capa+citors
LIGHT
N
1
1 page  
AME, Inc.
AME9001
n Electrical Specifications(contd.)
TA= 25OC unless otherwise noted, VBATT = 15V, CT1=0.01uF, RT2 = 56K
Parameter
Symbol
Test Condition
Output A (OUTA)
Peak current
IPEAKA
Output Low Voltage
VOL
Output High Voltage
VOH
Other outputs (OUTAPB, OUTC)
Peak current
IPEAKBC
Output Low Voltage
VOL
Output High Voltage
VOH
Soft start clamps (SSC, SSV)
Initial SSC current
ISSCINIT
Normal SSC current
ISSC
SSV current
ISSV
Other parameters
CE high threshold
CEHIGH
CE low threshold
CELOW
OVP high threshold
OVPHI
OVP low threshold
OVPLO
CSDET threshold
VTHCS
Average supply current
Average off current
IBATT
IOFF
0.2mA
-5mA
ISINK = 10mA
ISOURCE = 10mA
No FET gate current
In the application
www.DataSheet4U.com
CCFL Backlight Controller
Min Typ Max Units
14.4
1
10.8
Amp
V
V
1
VDD - .7
0.25
Amp
V
V
0.4 1.2 uA
107 180 uA
13 25 uA
1.5
0.4
3.2 3.55
200 300
200 300
2.5 6
10
V
V
V
mV
mV
mA
uA
5
5 Page 
AME, Inc.
AME9001
www.DataSheet4U.com
CCFL Backlight Controller
Figure 6. Typical Waveforms VBATT=9V
Q2 Gate
(OUTA)
Q3-1 Gate
(OUTAPB)
Q3-2 Gate
(OUTC)
Center tap
(Q2 DRAIN)
Q3-1 Drain
IDQ2
IDQ3-1
ILAMP
Region Region Region
I II III
Region
IV
VBATT=9V
1.5V
5V
0V
5V
0V
VBATT
0V
VBATT x 2
0
0
IMAX
0
IMAX
Q2 Gate
(OUTA)
Q3-1 Gate
(OUTAPB)
Q3-2 Gate
(OUTC)
Center tap
(Q2 DRAIN)
Q3-1 Drain
IDQ2
IDQ3-1
ILAMP
Figure 7. Typical Waveforms VBATT=21V
Region
I
Region
II
Region
III
Region
IV
VBATT=21V
13.5V
5V
0V
5V
0V
VBATT
0V
2 x VBATT
0V
0A
IMAX
0A
IMAX
11
11 Page | ||
| Páginas | Total 27 Páginas | |
| PDF Descargar | [ Datasheet AME9001.PDF ] | |
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