參數(shù)資料
型號: 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): 9/12頁
文件大小: 322K
代理商: LX1732CDU
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 9
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
C H A R A C T E R I S T I C C U R V E S
50%
60%
70%
80%
90%
100%
0
25
50
75
100
125
150
175
200
Output Current
E
Figure 8 –
Efficiency vs. Output Current (mA)
Top: V
IN
= 3.0V, V
OUT
= 5.0V, L1 = 47.0
μ
H; Bottom: V
IN
=
1.5V, V
OUT
= 3.0, L1 = 47.0
μ
H.
2.000
2.200
2.400
2.600
2.800
3.000
3.200
3.400
3.600
3.800
4.000
4.200
4.400
4.600
4.800
5.000
5.200
0
25
50
75
100
125
150
175
200
Output Current
V
Figure 9 –
Line Regulation vs. Output Current (mA)
Configuration: Top: V
IN
= 3.0V, V
OUT
= 5.0V, Bottom: V
IN
=
1.5V, V
OUT
= 3.0V
Figure 10: Step Load Response
Configuration: V
IN
= 1.5V; CH2: V
OUT
= 3.0V; CH3 I
LOAD
=
5mA to 110mA; CH4: I
L
Figure 11 –
Switching Waveforms:
CH2
= V
OUT
,
CH1
= SW
pin,
CH4
= Inductor Current where I
OUT
= 75mA; V
IN
= 1.5V;
V
OUT
= 3.0V; L = 47
μ
H; C
OUT
= 200
μ
F
G
R
A
P
H
S
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