參數(shù)資料
型號： AAT1151IVN-1.0-T1
廠商： Advanced Analogic Technologies, Inc.
英文描述： 850kHz 700mA Synchronous Buck DC/DC Converter
中文描述： 850kHz 700mA的同步降壓DC / DC轉(zhuǎn)換器
文件頁數(shù)： 13/16頁
文件大?。?/td> 396K
代理商： AAT1151IVN-1.0-T1
AAT1151
850kHz 700mASynchronous Buck DC/DC Converter
1151.2005.11.1.4
13
Design Example
Specifications
I
OUT
I
RIPPLE
V
OUT
V
IN
F
S
T
AMB
0.7A
40% of Full Load at Max V
IN
1.5V
2.7V to 4.2V (3.6V nominal)
850kHz
85°C
Maximum Input Capacitor Ripple:
Inductor Selection:
Select Sumida inductor CDRH3D16 3.3μH 63m
1.8mm height.
Output Capacitor Ripple Current:
1
2
3
1
1.5V · (4.2V - 1.5V)
3.3
H · 850kHz · 4.2V
2
3
RMS
I
IN
L F V
=
·
· ·
·
· = 99mArms
·
V
OUT
· (V
IN
- V
OUT
)
=
Pesr = esr · I
RMS2
= 5m
· 99
2
mA = 50
μ
W
V
V
1.5
V
1.5V
I =
1 - =
1- = 340mA
L
F
V
IN
3.3
H
850kHz
4.2V
I
PK
= I
OUT
+
I = 0.7A + 0.17A = 0.87A
2
P = I
O
2
DCR = (0.7)
2
63m
= 31mW
V
V
1.5
V
1.5V
L =I
1 - V
1 -4.2V
μ
H
O
k
F
IN
0.7A
0.4
850kHz
1
0.35Arms, V
IN
= 2
×
V
O
O
RMS
I
O
IN
IN
V
V
I
V
V
=
· ·
-
=
P = esr
·
I
RMS
2
= 5m
·
0.35
2
A = 0.6mW
相關(guān)PDF資料
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AAT1152IKS-1.1-T1 Triaxial Cable; Coaxial RG/U Type:59; Impedance:75ohm; Conductor Size AWG:22; No. Strands x Strand Size:19 x 34; Jacket Material:Polyvinylchloride (PVC); Capacitance:17pF/ft; Conductor Material:Copper; Jacket Color:Black RoHS Compliant: Yes
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