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AS3543 数据表(PDF) 39 Page - ams AG

部件名 AS3543
功能描述  High End Stereo Audio Codec wi th System PMU
PDF  92 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
制造商  AMSCO [ams AG]
网页  http://www.ams.com
标志 AMSCO - ams AG

AS3543 数据表(HTML) 39 Page - ams AG

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www.austriamicrosystems.com
Revision 1.11
38 - 91
AS3543 3v2
Data Sheet - D e t a i l e d D e s c r i p t i o n - P o w e r M a n a g e m e n t F u n c t i o n s
9.3.4
Parameter
BVDD=3.6V, TA= 25
o
C, unless otherwise mentioned
Figure 26. 15V Step-Up Performance Characteristics
Table 24. DCDC Parameter
Symbol
Parameter
Condition
Min
Typ
Max
Unit
VSW
High Voltage Pin
Pin SW15
0
15
V
IVDD
Quiescent Current
Pulse Skipping mode
140
A
VFB
Feedback Voltage, Transient
Pin ISINK1 or ISINK2
0
5.5
V
VFB
Feedback Voltage, during
Regulation
Pin ISINK1 or ISINK2
0.63
V
ISW_MAX
Current Limit
V15_ON = 1
350
510
750
mA
RSW
Switch Resistance
V15_ON = 0
0.85
1.54
Ω
ILOAD
Load Current
@ 15V output voltage
0
45
mA
IFB
Current into ISINK1 during
voltage feedback mode
50
uA
VPULSESKIP
Pulse-skip Threshold
Voltage at pin ISINK1 or ISINK2, pulse
skips are introduces when load current
becomes too low
0.96
V
FIN
Fixed Switching Frequency
0.45
0.66
0.85
MHz
COUT
Output Capacitor
Ceramic
1
F
L
(Inductor)
ILOAD > 20mA
Use inductors with small CPARASITIC
(<100pF) for high efficiency
17
22
27
H
ILOAD < 20mA
8
10
27
tMIN_ON
Minimum On-Time
Guaranteed per design
90
200
ns
MDC
Maximum Duty Cycle
Guaranteed per design
84
91
98
%
Efficiency vs. output current
70
75
80
85
90
95
1
10
100
OUTPUT CURRENT [mA]
VIN=3.6V
Load = 3 LEDs



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