參數(shù)資料
型號(hào): LX1732CDU-TR
廠商: MICROSEMI CORP-ANALOG MIXED SIGNAL GROUP
元件分類: 穩(wěn)壓器
英文描述: 1 A SWITCHING REGULATOR, 135 kHz SWITCHING FREQ-MAX, PDSO8
封裝: LEAD FREE, PLASTIC, MSOP-8
文件頁(yè)數(shù): 12/12頁(yè)
文件大?。?/td> 322K
代理商: LX1732CDU-TR
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
WWW
.Microse
m
i
.CO
M
LX1732
High Current PFM Boost Converter
PRODUCTION DATA SHEET
I N T E GRA T ED
PR ODUC T S
CHARACT ER I S TI C CURVES
50%
60%
70%
80%
90%
100%
0
25
50
75
100
125
150
175
200
Output Current
E
fficien
cy
(%
)
Figure 8 – Efficiency vs. Output Current (mA)
Top: VIN = 3.0V, VOUT = 5.0V, L1 = 47.0
H; Bottom: VIN =
1.5V, VOUT = 3.0, L1 = 47.0
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
o
lt
ag
e
(
V
)
Figure 9 – Line Regulation vs. Output Current (mA)
Configuration: Top: VIN = 3.0V, VOUT = 5.0V, Bottom: VIN =
1.5V, VOUT = 3.0V
Figure 10: Step Load Response
Configuration: VIN = 1.5V; CH2: VOUT = 3.0V; CH3 ILOAD =
5mA to 110mA; CH4: IL
Figure 11 – Switching Waveforms: CH2 = VOUT, CH1 = SW
pin,
CH4 = Inductor Current where IOUT = 75mA; VIN = 1.5V;
VOUT = 3.0V; L = 47
H; COUT = 200F
GG
RR
AA
PP
HH
SS
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