AME9003AETH AME, AME9003AETH Datasheet - Page 18

• Manufacturer Part Number: AME9003AETH
• Description: CCFL Inverters & Accessories Backlight Controller
• Manufacturer: AME

Specifications of AME9003AETH

• Function: Backlight Controller
• Input Voltage: 3.5 V
• Output Voltage: 5.35 V
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

CSDET
SSC
F
CT1
AME9003
BRIGHT *
SSV
18
COMP
VBATTOK
F = f
VDDOK
MIN
OVPL<2.5V
OVPH<3.3V
OVPL<2.5V
OVPH<3.3V
OVPL>2.5V
OVPH < 3.3V
}
OVPH>3.3V
CSDET > 1.25V
VALID
IF:
OVPH < 3.3V
AME, Inc.
OVPL>2.5V
< Initial Start Up Period>
OVPL
<2.5V
OVPH < 3.3V
OVPL>2.5V
F
Frequency decreases
F
Frequency constant
F
Frequency = F
SSV=0V
Tube has struck and initial
start period has ended.
1.25V
COMP
COMP
COMP
THEN:
OVPH>3.3V
ramps up
=
constant
Figure 11. Start Up and Steady State Waveform
V
COMP=0V
OVPL<2.5V
OVPH<3.3V
MAX
<1 Sec
<3V
<Two full scale brightness cycles after strike >
F = f
8 consecutive clock cycles
MIN
CSDET < 1.25V for
OVPH > 3.3V
OVPL > 2.5V
IF:
3V
~ 6mS
<After CCFL strikes>
during blanking period: nothing
after blanking period: shutdown
during blanking period: nothing
after blanking period: shutdown
Immediate shutdown
<Steady state op. with duty cycle dimming>
THEN:
CCFL Backlight Controller
** Time axis is not to scale
* BRPOL is Low
**
5V