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AS3722 数据表(PDF) 29 Page - ams AG

部件名 AS3722
功能描述  Multi-Phase DCDC Controller PMIC
PDF  198 Pages
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制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS3722 数据表(HTML) 29 Page - ams AG

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ams Datasheet
Page 29
[v1-01] 2015-Sep-07
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AS3722 − Detailed Descriptions- Power Management Functions
Figure 21:
DC/DC Buck Converter External Components
DC/DC Buck Converter External Components: Shows the external component parameter of the internal DC/DC
buck converters
Figure 22:
DC/DC Buck SD2 Efficiency vs. Output Current
DC/DC Buck SD2 Efficiency: Shows efficiency of the internal SD2 buck converter @ 1.0V, 1,2V, 1.8V, 2,5V& 3.0V
with VSUP=3.8V, 3MHz operation and TA=25°C
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
CFB_SD2
Output capacitor
Ceramic X5R or X7R
27
μF
Output capacitor,
sd2_fast=1
Ceramic X5R or X7R
54
μF
CFB_SD3
Output capacitor
Ceramic X5R or X7R
12
μF
Output capacitor,
sd3_fast=1
Ceramic X5R or X7R
27
μF
CFB_SD4-5
Output capacitor
Ceramic X5R or X7R
8
μF
Output capacitor
sd4_fast=1 or
sd5_fast=1
Ceramic X5R or X7R
18
μF
CVSUP_SD2
Input capacitor
Ceramic X5R or X7R
7
μF
CVSUP_SD3
Input capacitor
Ceramic X5R or X7R
3.5
μF
CVSUP_SD4-5
Input capacitor
Ceramic X5R or X7R
2.2
μF
LSD2-SD5
Inductor
0.5
1
μH
LSD2-SD3
Inductor
VOUT<=1.8V
0.3
0.47
μH
40
45
50
55
60
65
70
75
80
85
90
95
0,001
0,01
0,1
1
10
Output Current (A)
Vout = 1.2V
Vout = 1.2V, low noise
Vout = 2.5V
Vout = 2.5V, low noise
40
45
50
55
60
65
70
75
80
85
90
95
0,001
0,01
0,1
1
10
Output Current (A)
Vout = 1.0V
Vout = 1.0V, low noise
Vout = 1.8V
Vout = 1.8V, low noise
Vout = 3.0V
Vout = 3.0V, low noise



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