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參數(shù)資料
| 型號： | LX1744CPW |
| 廠商： | MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP |
| 元件分類： | 顯示驅(qū)動器 |
| 英文描述： | Dual Output Boost ? LED Driver / LCD Bias |
| 中文描述： | LED DISPLAY DRIVER, PDSO14 |
| 封裝： | PLASTIC, TSSOP-14 |
| 文件頁數(shù)： | 3/16頁 |
| 文件大?。?/td> | 571K |
| 代理商： | LX1744CPW |
LX1744
P
RODUCTION
D
ATASHEET
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 3
W
M
.
C
Dual Output Boost – LED Driver / LCD Bias
I N T E G R A T E D P R O D U C T S
Copyright
2000
Rev. 1.1b, 2005-03-01
F U N C T I O N A L P I N D E S C R I P T I O N
Name
Description
IN
Unregulated IC Supply Voltage Input – Input range from +1.6V to 6.0V. Bypass with a 1
μ
F or greater capacitor
for operation below 2.0V.
DRV
LED MOSFET Gate Driver – Connects to an external N-Channel MOSFET.
SRC
LED MOSFET Current Sense Input - Connects to the External N-Channel MOSFET Source.
OVP
Over Voltage Programming Pin – Connects to a resistor divider between the output load and GND to set the
maximum output voltage. OVP has a voltage threshold of 1.2V
LFB
LED Current Feedback Input – Connects to a current sense resistor between the LED output load and GND to
set the LED drive current.
GND
Common terminal for ground reference.
BRT
LED Dimming Signal Input – Provides the internal reference, via an internal filter and gain resistor, allowing for a
dynamic output LED current adjustment that corresponds to the PWM input signal duty cycle. Either a PWM
signal or analog voltage can be used. The actual BRT pin voltage range is from V
IN
to GND. Minimize the
current sense resistor power dissipation by selecting a range for V
BRT
= 0.0V to 0.5V.
REF
Buffered Reference Output – Connected to the internal bandgap reference voltage of 1.2V.
SW
LCD Bias Inductor Switch Connection – Internally connected to the drain of a 28V N-channel MOSFET. SW is
high impedance in shutdown.
FB
Feedback Input – Connect to a resistive divider network between the output and GND to set the output voltage
between V
CC
(IN) and 25V. The feedback threshold is 1.29V.
LCD Bias Adjustment PWM Signal Input – Connect to an RC filter allowing for dynamic output voltage adjustment
>
±
15%, corresponding to a varying duty cycle. Either a PWM signal or analog voltage can be used. The ADJ
input voltage range is from 0.9V to V
IN
DC. The ADJx pin should be connected to ground when the internal
reference is used.
LED Driver Active-Low Shutdown Input – A logic low shuts down the LED driver circuitry and reduces the supply
current by 60
μ
A (Typ). Pull
LSHDN
high for normal operation.
LCD Bias Active-Low Shutdown Input – A logic low shuts down the LCD Bias circuitry and reduces the supply
current by 60
μ
A (Typ). Pull
SHDNx
high for normal operation.
ADJ
LSHDN
SHDNx
CS
Current-Sense Amplifier Input – Connecting a resistor between CS and GND sets the peak inductor current limit.
P
A
C
K
A
G
E
D
A
T
A
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| LX1745CPW | 功能描述:IC LED DRVR WT/CLR BCKLT 20TSSOP RoHS:是 類別:集成電路 (IC) >> PMIC - LED 驅(qū)動器 系列:- 標(biāo)準包裝:1 系列:- 恒定電流:- 恒定電壓:- 拓撲:PWM，切換式電容器（充電泵） 輸出數(shù):1 內(nèi)部驅(qū)動器:是 類型 - 主要:背光 類型 - 次要:白色 LED 頻率:642kHz 電源電壓:2.7 V ~ 5.5 V 輸出電壓:5V 安裝類型:表面貼裝 封裝/外殼:10-VFDFN 裸露焊盤 供應(yīng)商設(shè)備封裝:10-VSON 包裝:剪切帶 (CT) 工作溫度:-30°C ~ 85°C 產(chǎn)品目錄頁面:1371 (CN2011-ZH PDF) 其它名稱:BD1603NUV-E2CT |
| LX1745-CPW | 制造商:MICROSEMI 制造商全稱:Microsemi Corporation 功能描述:Triple Output Boost ? LED Driver / LCD Bias |
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