LX1732 データシートの表示（PDF） - Microsemi Corporation
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LX1732 Datasheet PDF : 12 Pages
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INTEGRATED PRODUCTS
LX1732
High Current PFM Boost Converter
PRODUCTION DATA SHEET
CHARACTERISTIC CURVES
100%
90%
80%
70%
60%
50%
0
25
50
75
100
125
150
175
200
Output Current
Figure 8 – Efficiency vs. Output Current (mA)
Top: VIN = 3.0V, VOUT = 5.0V, L1 = 47.0µH; Bottom: VIN =
1.5V, VOUT = 3.0, L1 = 47.0µH.
5.200
5.000
4.800
4.600
4.400
4.200
4.000
3.800
3.600
3.400
3.200
3.000
2.800
2.600
2.400
2.200
2.000
0
25
50
75
100
125
150
175
200
Output Current
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 = 47µH; COUT = 200µF
Copyright © 2000
Rev. 1.1c, 2005-03-03
Microsemi
Integrated Products
11861 Western Avenue, Garden Grove, CA. 92841, 714-898-8121, Fax: 714-893-2570
Page 9
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