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AS3658 데이터시트(PDF) 75 Page - ams AG

부품명 AS3658
상세설명  Power and Audio Management Unit for Portable Devices
PDF  158 Pages
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제조업체  AMSCO [ams AG]
홈페이지  http://www.ams.com
Logo AMSCO - ams AG

AS3658 데이터시트(HTML) 75 Page - ams AG

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Table 64. Step Down DC/DC Bit definitions
Addr:37
Step Down charger control
These bits configures the step down converters
Bit
Bit Name
Default Access
Description
www.austriamicrosystems.com
Revision 1v13
74 - 157
AS3658
Data Sheet Confidential - Detail ed Descri ption-Power Management Functions
3-
0
n/a
4
sd1_dis_curmin
0
R/W
Step down curmin feature control
0
curmin feature enabled: Inductor current regulated
to min 170mA. Higher efficiency in low dropout
and low output current operation. Higher output
ripple and noise.
1
curmin feature disabled: Decreased efficiency in
low dropout mode and at low output current. Small
output ripple and noise.
5
sd2_dis_curmin
0
R/W
Step down curmin feature control
0
curmin feature enabled: Inductor current regulated
to min 170mA. Higher efficiency in low dropout
and low output current operation. Higher output
ripple and noise.
1
curmin feature disabled: Decreased efficiency in
low dropout mode and at low output current. Small
output ripple and noise.
6
sd3_dis_curmin
0
R/W
Step down curmin feature control
0
curmin feature enabled: Inductor current regulated
to min 170mA. Higher efficiency in low dropout
and low output current operation. Higher output
ripple and noise.
1
curmin feature disabled: Decreased efficiency in
low dropout mode and at low output current. Small
output ripple and noise.
Table 65. Step Down DC/DC Reg Power1 ctrl Bit definitions
Addr:23
Reg Power1 Ctrl
These bits control the on/off function of the step down regulator
Bit
Bit Name
Default Access
Description
4
sd1_on
ROM
R/W
Switch on/off the step down1 dc/dc converter; it is possible
to on/off control DCDC SD1 by CURR3_GPIO3 or
CURR4_GPIO4 (see General Purpose Input / Output
(CURR1_GPIO1 … CURR4_GPIO4) on page 30)
0
Step Down DC/DC 1 off
1
Step Down DC/DC 1 on
5
sd2_on
ROM
R/W
Switch on/off the step down2 dc/dc converter; it is possible
to on/off control DCDC SD2 by CURR3_GPIO3 or
CURR4_GPIO4 (see General Purpose Input / Output
(CURR1_GPIO1 … CURR4_GPIO4) on page 30)
0
Step Down DC/DC 2 off
1
Step Down DC/DC 2 on



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