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LM3668 Arkusz danych(PDF) 8 Page - Texas Instruments

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Numer części LM3668
Szczegółowy opis  1A, High Efficiency Dual Mode Single Inductor Buck-Boost DC/DC Converter
Download  26 Pages
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Producent  TI1 [Texas Instruments]
Strona internetowa  http://www.ti.com
Logo TI1 - Texas Instruments

LM3668 Arkusz danych(HTML) 8 Page - Texas Instruments

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LOAD (mA)
100
90
80
70
60
50
40
30
20
10
0
0
1
10
100
1000
VIN = 5.5V
VIN =5.0V
VIN = 3.6V
VIN = 2.7V
VIN
VOUT_AC
100 Ps/DIV
4.5V
3.7V
100 mV/DIV
5V/DIV
5V/DIV
SW2
SW1
LOAD (mA)
100
90
80
70
60
50
40
30
20
10
0
0
1
10
100
1000
VIN = 5.5V
VIN = 5.0V
VIN = 3.6V
VIN = 2.7V
LOAD (mA)
100
90
80
70
60
50
40
30
20
10
0
0
1
10
100
1000
VIN = 5.5V
VIN = 5.0V
VIN = 3.6V
VIN = 2.7V
LOAD (mA)
100
90
80
70
60
50
40
30
20
10
0
0
1
10
100
1000
VIN = 5.5V
VIN = 5.0V
VIN = 3.6V
VIN = 2.5V
VIN = 2.7V
LOAD (mA)
100
90
80
70
60
50
40
30
20
10
0
0
1
10
100
1000
VIN = 5.5V
VIN = 3.6V
VIN = 2.7V
VIN = 5V
LM3668
SNVS449L – JUNE 2007 – REVISED MARCH 2011
www.ti.com
Typical Performance Characteristics (continued)
Typical Application Circuit (Figure 1): VIN = 3.6V, L = 2.2µH, CIN = 10µF, COUT = 22µF
(1), T
A = 25°C , unless otherwise stated.
Efficiency at VOUT = 3.4V
Efficiency at VOUT = 4.5V
(Auto Mode)
(Forced PWM Mode)
Figure 18.
Figure .
Efficiency at VOUT = 4.5V
Efficiency at VOUT = 5.0V
(Auto Mode)
(Forced PWM Mode)
Figure 19.
Figure 20.
Efficiency at VOUT = 5.0V
Line Transient in Buck Mode
(Auto Mode)
( VOUT = 3.4V, Load = 500mA)
Figure 21.
Figure 22.
8
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