AAT1152 Просмотр технического описания (PDF) - Analog Technology Inc
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AAT1152 Datasheet PDF : 18 Pages
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AAT1152
850kHz 1A Synchronous Buck DC/DC Converter
R5
100k
Pok
Vin+ 2.7V-5.5V
C1
10µF
R1 100
R2
EN
100k
C3
0.1µF
U1
AAT1152-1.5
Vp FB
Vcc Pok
EN LX
Sgnd Pgnd
Vo+ 1.5V 1A
L1
4.1µH
LX
C2
100µF
V-
C1 Murata 10µF 6.3V X5R GRM42-6X5R106K6.3
C2 MuRata 100µF 6.3V GRM43-2 X5R 107M 100µF 6.3V
L1 Sumida CDRH5D 18-4R 1µH
1.5V Efficiency vs. IOUT
100
80
2.7V
60
4.2V
40
3.6V
20
0
10
100
1000
Iout (mA)
Figure 4: Lithium-Ion to 1.5V Output Converter
Figure 5: AAT1152 Layout
Top Layer
Figure 6: AAT1152 Layout
Bottom Layer
1152.2003.01.0.9
13
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