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TPS62046DGQRG4 Fiches technique(PDF) 6 Page - Texas Instruments

No de pièce TPS62046DGQRG4
Description  1.2 A/1.25 MHz, HIGH-EFFICIENCY STEP-DOWN CONVERTER
Download  30 Pages
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Fabricant  TI1 [Texas Instruments]
Site Internet  http://www.ti.com
Logo TI1 - Texas Instruments

TPS62046DGQRG4 Fiches technique(HTML) 6 Page - Texas Instruments

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TPS62040
TPS62042, TPS62043
TPS62044, TPS62046
SLVS463B − JUNE 2003 − REVISED OCTOBER 2005
www.ti.com
6
TYPICAL CHARACTERISTICS
TABLE OF GRAPHS
FIGURE
η
Efficiency
vs Load current
1, 2, 3
η
Efficiency
vs Input voltage
4
IQ
Quiescent current
vs Input voltage
5, 6
fs
Switching frequency
vs Input voltage
7
rDS(on)
P-Channel rDS(on)
vs Input voltage
8
rDS(on)
N-Channel rectifier rDS(on)
vs Input voltage
9
Load transient response
10
PWM operation
11
Power save mode
12
Start-up
13
Figure 1
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.01
0.1
1
10
100
1 k
10 k
VO = 3.3 V
VI = 3.6 V
MODE = Low
VI = 5 V
MODE = Low
VI = 3.6 V
MODE = High
VI = 5 V
MODE = High
EFFICIENCY
vs
LOAD CURRENT
IL − Load Current − mA
Figure 2
40
45
50
55
60
65
70
75
80
85
90
95
100
0
0.01
0.1
1
10
100
1 k
10 k
VO = 1.8 V
VI = 2.7 V
VI = 3.6 V
VI = 5 V
MODE = Low
VI = 3.6 V
MODE = High
EFFICIENCY
vs
LOAD CURRENT
IL − Load Current − mA


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