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AAT2513 Datasheet(PDF) 17 Page - Advanced Analogic Technologies

Part # AAT2513
Description  Dual 600mA Step-Down Converter with Synchronization
PDF  22 Pages
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Manufacturer  ANALOGICTECH [Advanced Analogic Technologies]
Direct Link  http://www.analogictech.com
Logo ANALOGICTECH - Advanced Analogic Technologies

AAT2513 Datasheet(HTML) 17 Page - Advanced Analogic Technologies

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1.8V Output Capacitor
2.5V Output Capacitor
Input Capacitor
Input Ripple V
PP = 25mV.
I
O1 + IO2
RMS(MAX)
I
P = esr · I
RMS
2 = 5m
Ω · (0.6A)2 = 0.8mW
2
=
= 0.6Arms
C
IN =
=
= 10µF
1
⎛⎞
- ESR ·
4 · F
S
⎝⎠
V
PP
I
O1 + IO2
1
⎛⎞
- 5m
Ω · 4 · 1.7MHz
⎝⎠
25mV
1.2A
1
23
1
2.5V · (4.2V - 2.5V)
3.3µH · 1.7MHz · 4.2V
23
RMS(MAX)
I
L · F · V
IN(MAX)
=·
·
3 ·
ΔI
LOAD
V
DROOP · FS
3 · 0.3A
0.2V · 1.7MHz
C
OUT =
=
= 4.8µF
·
= 67mArms
·
(V
OUT) · (VIN(MAX) - VOUT)
=
P
esr = esr · IRMS
2 = 5m
Ω · (67mA)2 = 22µW
1
23
1
1.8V · (4.2V - 1.8V)
2.2µH · 1.7MHz · 4.2V
23
RMS(MAX)
I
L · F · V
IN(MAX)
=·
·
3 ·
ΔI
LOAD
V
DROOP · FS
3 · 0.3A
0.2V · 1.7MHz
C
OUT =
=
= 4.8µF
·
= 31mArms
·
(V
OUT) · (VIN(MAX) - VOUT)
=
P
esr = esr · IRMS
2 = 5m
Ω · (31mA)2 = 4.8µW
AAT2513
Dual 600mA Step-Down
Converter with Synchronization
2513.2007.04.1.1
17



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