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参数资料
| 型号： | LX1801CLQ-TR |
| 厂商： | MICROSEMI CORP |
| 元件分类： | 模拟信号调理 |
| 英文描述： | SPECIALTY ANALOG CIRCUIT, PQCC16 |
| 封装： | 3 X 3 MM, ROHS COMPLIANT, PLASTIC, MLPQ-16 |
| 文件页数： | 1/12页 |
| 文件大小： | 255K |
| 代理商： | LX1801CLQ-TR |
LX1801
PRODUCTION DATA SHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 1
Copyright
2005
Rev. 1.0, 5/4/2006
WWW
.Microse
m
i
.CO
M
SMBus to Analog & Digital System Interface
TM
DESCRIPTION
The LX1801 is a SMBus controlled
dimming interface for CCFL inverters.
It complies with the Dell Inc. M07
specification for Notebook backlight
inverters.
The LX1801 processes 3 brightness
control inputs, one each from the
SMBus, an ambient light sensor, and a
separate system side PWM signal and
generates an analog output signal that
drives the dimming circuitry of a
CCFL inverter controller.
Five
different brightness control modes are
supported which include Intel DPST
display power saving technology.
In addition to its SMBus interface,
the LX1801 contains an eight bit ADC,
seven 8 bit registers, three 8 bit DAC’s,
a multiplier, and other special circuits
that process its analog voltage output.
The LX1801 controls inverter on/off
and monitors and reports lamp status
and inverter faults in real time.
The LX1801 is available in the 16
lead 3 x 3mm MLPQ package.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
KEY FEATUR ES
Fully Compliant to Standard
SMBus Specifications
I2C Bus Compatible
8 bit Resolution
±10 LSB Accuracy
One 8 bit ADC
Three 8 bit DAC’s
SMBus Address Strap for 2
Selectable Addresses
External Reference Inputs Set
Analog Brightness Voltage
Lower Limit and Range
APPLI C ATION S
Processor and Ambient Light
Senor (ALS) Controlled LCD
Panel Dimming with Intel DPST
General Purpose SMBus I/O
Control Applications
PRODUCT H I GHLIGHT
Part
ALS_IN
SDA
SCL
PWM_IN
VSS
OVR_CUR
LMP_ON
LMP_C
VSS
FLT_DLY
EN_OUT
BRITE_OUT
ADR0
V_BOT
VREF_IN
VDD
LX169x Based
CCFL Inverter
LX1801
Notebook LCD inverter with 5 SMBus dimming modes including bus driven, ambient light sensor driven, PWM driven, and either SMBus or ALS
with Intel DPST enhancement.
I/O
CONN
SMB_DAT
SMB_CLK
INV_PWM
Part
LX1972
ALS
5V
PACKAGE ORDER INFO
LQ Plastic 3x3 mm MLPQ 16 pin
TJ (°C)
RoHS Compliant / Pb-free
-40 to 85
LX1801CLQ
Note: Available in Tape & Reel. Append the letters “TR” to the part number. (i.e. LX1801CLQ-TR)
LL
XX
11
88
00
11
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