參數(shù)資料
型號(hào): LX1732CDU
廠商: MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類: 穩(wěn)壓器
英文描述: High Current PFM Boost Converter
中文描述: 1 A SWITCHING REGULATOR, 135 kHz SWITCHING FREQ-MAX, PDSO8
封裝: LEAD FREE, PLASTIC, MSOP-8
文件頁數(shù): 4/12頁
文件大?。?/td> 322K
代理商: LX1732CDU
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 4
Copyright
2000
Rev. 1.1c, 2005-03-03
W
M
.
C
LX1732
High Current PFM Boost Converter
P
RODUCTION
D
ATA
S
HEET
I N T E G R A T E D P R O D U C T S
A P P L I C A T I O N C I R C U I T S
VCO
Shutdown
Gate Driver
Current
Sense
+
-
+
-
SW
SHDN
VC
LBI
GND
FB
LBO
IN
Band Gap
V
REF
= 1.200V
Ref = V
BG
/2
Logic
Control
Figure 2
– LX1732 Block Diagram
V
IN
V
OUT
LX1732
GND
VC
FB
SW
SHDN
IN
LBI
LBO
27
μ
H
UPS5817
20
μ
F
10V
316K
100K
316K
100K
20
μ
F
10V
Figure 3
– V
OUT
= 5.0V; I
OUT
= 150mA and V
LBI
= 2.5V
V
IN
V
OUT
LX1732
GND
VC
FB
SW
SHDN
IN
LBI
LBO
27
μ
H
UPS5817
20
μ
F
10V
174K
100K
100K
100K
20
μ
F
10V
Figure 4
– V
OUT
= 3.2V; I
OUT
= 250mA and V
LBI
= 1.2V
V
IN
LX1732
GND
VC
FB
SW
SHDN
IN
LBI
LBO
27
μ
H
UPS5817
20
μ
F
15
20
μ
F
15
15
15
15
237K
100K
Figure 5
– LX1732 driving 5 white LEDs in parallel
where V
OUT
> 3.6V; I
OUT
= 100mA.
A
P
P
L
I
C
A
T
I
O
N
S
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