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WM8310 Datasheet(PDF) 92 Page - Wolfson Microelectronics plc

Part # WM8310
Description  Processor Power Management Subsystem
PDF  291 Pages
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Manufacturer  WOLFSON [Wolfson Microelectronics plc]
Direct Link  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8310 Datasheet(HTML) 92 Page - Wolfson Microelectronics plc

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WM8310
Pre-Production
w
PP, May 2012, Rev 3.1
92
ADDRESS
BIT
LABEL
DEFAULT
DESCRIPTION
Power Good
Source 2
0 = Disabled
1 = Enabled
8
LDO9_OK
1
LDO9 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
7
LDO8_OK
1
LDO8 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
6
LDO7_OK
1
LDO7 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
5
LDO6_OK
1
LDO6 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
4
LDO5_OK
1
LDO5 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
3
LDO4_OK
1
LDO4 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
2
LDO3_OK
1
LDO3 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
1
LDO2_OK
1
LDO2 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
0
LDO1_OK
1
LDO1 status selected as an input to
PWR_GOOD
0 = Disabled
1 = Enabled
Table 44 PWR_GOOD (GPIO) Configuration
15.15 DC-DC CONVERTER OPERATION
15.15.1 OVERVIEW
The WM8310 provides four DC-DC switching converters. Three of these are synchronous buck (step-
down) converters; the fourth of these is a boost (step-up) converter. The principal characteristics of
each DC-DC converter are shown below.
DC-DC1 / DC-DC2
DC-DC3
DC-DC4
Converter Type
Buck (step-down)
Buck (step-down)
Boost (step-up)
Input Voltage Range
2.7V to 5.5V (connect to SYSVDD supply)
Output Voltage Range
0.6V to 1.8V
0.85V to 3.4V
5V to 30V
Load Current Rating
Up to 1200mA
Up to 1000mA
Up to 25mA @ 30V
Up to 40mA @ 20V
Up to 90mA @ 8V
Switching Frequency
2MHz or 4MHz
2MHz
1MHz
Table 45 DC-DC Converter Overview



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