參數(shù)資料
型號: LX1741CDUT
廠商: MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類: 穩(wěn)壓器
英文描述: 0.145 A SWITCHING CONTROLLER, PDSO8
封裝: PLASTIC, MSOP-8
文件頁數(shù): 10/15頁
文件大小: 459K
代理商: LX1741CDUT
Microsemi
Integrated Products Division
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
Copyright
2000
Rev. 1.1, 2002-11-21
WWW
.Microse
m
i
.CO
M
LX1741
High Efficiency High Voltage Boost Controller
PRODUCTION DATA SHEET
I N T E GR A T ED
PRO DUC T S
A PPL I C ATI O N CI R C UI T S
Typical LCD Bias Applications
V
BAT = (1.6V to 6.0V)
+
=
2
1
REF
OUT
R
1
V
R
1
R
2
C
1
4.7
F
C
2
*
1nF
R
CS
1k
L
1
* Optional Component
used to reduce output
voltage ripple.
47
H
LX1741
NDRV
SHDN
IN
SRC
GND
FB
CS
ADJ
Figure 1
– Fixed Output Voltage Operation
V
BAT = (1.6V to 6.0V)
+
=
2
1
ADJ
OUT
R
1
V
R
1
R
2
C
1
4.7
F
C
2
*
1nF
R
CS
1k
L
1
* Optional Component
used to reduce output
voltage ripple.
47
H
R
PWM
100kHz
V
PWM = 3.0V
625k
LX1741
NDRV
SHDN
IN
SRC
GND
FB
CS
ADJ
Figure 2
– Dynamic Output Voltage Operation Via PWM Input
Note
: An in-series RPWM will attenuate the PWM amplitude to the proper signal level at the ADJ pin. With the RPWM value
shown, a PWM signal having a duty of 30% to 50% will generate 0.9V to 1.5V at the ADJ pin.
AA
PP
LL
IICC
AA
TT
IIOO
NN
SS
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