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AS3658 Datasheet(PDF) 79 Page - ams AG

Part # AS3658
Description  Power and Audio Management Unit for Portable Devices
PDF  158 Pages
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Manufacturer  AMSCO [ams AG]
Direct Link  http://www.ams.com
Logo AMSCO - ams AG

AS3658 Datasheet(HTML) 79 Page - ams AG

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www.austriamicrosystems.com
Revision 1v13
78 - 157
AS3658
Data Sheet Confidential - Detail ed Descri ption-Power Management Functions
8.12
Low Dropout Regulators (LDO)
The low dropout regulators are linear high performance regulators with programmable output voltage.
They are controlled by the following registers:
Table 71. LDO_RF1 voltage bit definitions
Addr:03
LDO_RF1 voltage
These bits control the LDO_RF1 voltage and mode
Bit
Bit Name
Default Access
Description
Table 72. LDO_RF2 voltage bit definitions
Addr:04
LDO_RF2 voltage
These bits control the LDO_RF2 voltage and mode
Bit
Bit Name
Default Access
Description
Table 73. LDO_RF3 voltage bit definitions
Addr:05
LDO_RF3 voltage
These bits control the LDO_RF3voltage and mode
Bit
Bit Name
Default Access
Description
4:0
ldo_rf1_v
ROM
R/W
Control the voltage selection for LDO VRF_1
00000 1.85V
… (LSB=50mV)
11111 3.40V
5
rf1_lcurr_en
ROM
R/W
0
current limitation = Ilimit
1
current limitation Ilimit=Ilimit/2
6
rf1_swprot_en
ROM
R/W
If ‘1’ current limitation is enabled, if RF1-LDO is operating
as High side switch
4:0
ldo_rf2_v
ROM
R/W
Control the voltage selection for LDO VRF_2
00000 1.85V
… (LSB=50mV)
11111 3.40V
5
rf2_lcurr_en
ROM
R/W
0
current limitation = Ilimit
1
current limitation Ilimit=Ilimit/2
4:0
ldo_rf3_v
ROM
R/W
Control the voltage selection for LDO VRF_3
00000 1.85V
… (LSB=50mV)
11111 3.40V
5
rf3_lcurr_en
ROM
R/W
0
current limitation = Ilimit
1
current limitation Ilimit=Ilimit/2
6
rf3_hotplug_en
ROM
R/W
0
normal mode
1
200mA current limited switch, if bit rf3_sw=1
(rf3_lcurr_en=0)



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