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参数资料
| 型号： | LX1693CLQ-TR |
| 厂商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分类： | 稳压器 |
| 英文描述： | FLUORESCENT LIGHT CONTROLLER, QCC28 |
| 封装： | 4 X 5 MM, ROHS COMPLIANT, PLASTIC, MLPQ-28 |
| 文件页数： | 1/2页 |
| 文件大小： | 97K |
| 代理商： | LX1693CLQ-TR |
LX1693
PRODUCTION DATA SHEET
Microsemi
Analog Mixed Signal Group
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2007
Rev 1.0, 8/1/2007
WWW
.Microse
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i
.CO
M
High Performance CCFL Controller w/ALS
TM
LL
XX
11
66
99
33
DESCRIPTION
The LX1693 is a high performance
CCFL controller optimized for wide
input voltage range notebook display
back lighting applications.
Its
new
brightness
control
architecture provides versatile support
for ambient light sensor (ALS) control
of panel brightness. It also supports
Intel’s DPST (Display Power Saving
Technology)
that
adjusts
the
brightness as a function of video
content. The ALS control architecture
is compatible with all Microsemi
visible light sensor products.
The controller’s digital dimming
mode includes three brightness inputs:
ALS_IN
for
the
light
sensor,
BRITE_D
for
brightness
and
BST_SYNC for digital dimming and
synchronization..
Burst frequency can be controlled
either by the on chip burst oscillator or
directly by an external logic signal at
BST_SYNC.
The on chip burst
oscillator can either free run or
synchronize
to
an
external
signal.
Digital
Dimming
duty
cycle
is
controlled by providing either a DC
voltage or a PWM signal to the
BRITE_D pin.
The LX1693 can be
operated
directly
from
the
battery
without the need of an external 5V
supply from the system.
The LX1693 power stage includes
direct coupled full bridge high voltage
drivers for the external N-channel high
side and N-channel low side power
FETs.
The LX1693 includes lamp current
and open lamp voltage regulation,
fully programmable lamp frequency and
burst dimming frequency oscillators,
and our patented fool-proof lamp strike
circuitry.
Analog
programmable
open
lamp
strike time-out, over voltage, and short
circuit
fault
detection
are
fully
implemented.
The LX1693 is available in the 28 pin 4
x 5 MLPQ surface mount package.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
Protected by U.S. Patents: 5,615,093; 5,923,129; 5,930,121; 6,198,234; 7,112,929; Patents Pending
KEY FEATUR ES
7 to 25 Volts Wide Input Voltage
Range
Versatile Support for Ambient Light
Sensor Brightness Control
Resistor Programmable Lamp
Operating Frequency within
±4%
Tolerance
Resistor Programmable Burst
Operating Frequency
Support Intel
TM DPST for System
PWM input
Compatible with Microsemi’s new
SMBus CCFL controllers
Fully Programmable Open Lamp
and Load Fault Time Outs
On Chip Full Wave Rectifiers for
Lamp Voltage and Current
Cost Effective and Low Parts Count
Inverter Modules
Uses Industry Standard High
Voltage Transformers
APPLI C ATION S
Note Book LCD displays
Transportable Computers
Web Tablet LCD displays
PACKAGE ORDER INFO
LQ Plastic MLPQ 4x5mm 28 pin
TA (°C)
RoHS Compliant / Pb-free
-20 to 70
LX1693CLQ
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1693CLQ-TR)
PRODUCT H I GHLIGHT
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