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AAT2510 датащи(PDF) 15 Page - Advanced Analogic Technologies

номер детали AAT2510
подробное описание детали  Dual 400mA, 1MHz Step-Down DC-DC Converter
PDF  20 Pages
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производитель  ANALOGICTECH [Advanced Analogic Technologies]
домашняя страница  http://www.analogictech.com
Logo ANALOGICTECH - Advanced Analogic Technologies

AAT2510 датащи(HTML) 15 Page - Advanced Analogic Technologies

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2.5V Output Capacitor
1.8V Output Capacitor
Input Capacitor
Input Ripple V
PP = 25mV.
IO1 + IO2
RMS(MAX)
I
P = esr · IRMS
2 = 5mΩ · (0.4A)2 = 0.8mW
2
=
= 0.4Arms
C
IN =
=
= 9.5
µF
1
⎛⎞
- ESR •
4 • F
S
⎝⎠
V
PP
I
O1 + IO2
1
⎛⎞
- 5m
Ω • 4 • 1MHz
⎝⎠
25mV
0.8A
1
23
1
1.8V · (4.2V - 1.8V)
4.7µH · 1.0MHz · 4.2V
23
RMS(MAX)
I
L · F · VIN(MAX)
=·
·
3 · ∆ILOAD
VDROOP · FS
3 · 0.3A
0.2V · 1MHz
COUT =
=
= 4.5µF
·
= 63mArms
·
(VOUT) · (VIN(MAX) - VOUT)
=
Pesr = esr · IRMS2 = 5mΩ · (63mA)2 = 20µW
1
23
1
2.5V · (4.2V - 2.5V)
10µH · 1MHz · 4.2V
23
RMS(MAX)
I
L · F · VIN(MAX)
=·
·
3 · ∆ILOAD
VDROOP · FS
3 · 0.3A
0.2V · 1MHz
COUT =
=
= 4.5µF
·
= 29mArms
·
(VOUT) · (VIN(MAX) - VOUT)
=
Pesr = esr · IRMS2 = 5mΩ · (29mA)2 = 4.2µW
AAT2510
Dual 400mA, 1MHz Step-Down DC-DC Converter
2510.2005.08.1.5
15



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