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WM8310 데이터시트(PDF) 97 Page - Wolfson Microelectronics plc

부품명 WM8310
상세설명  Processor Power Management Subsystem
PDF  291 Pages
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제조업체  WOLFSON [Wolfson Microelectronics plc]
홈페이지  http://www.wolfsonmicro.com
Logo WOLFSON - Wolfson Microelectronics plc

WM8310 데이터시트(HTML) 97 Page - Wolfson Microelectronics plc

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Pre-Production
WM8310
w
PP, May 2012, Rev 3.1
97
Figure 21 DC-DC Boost Converter Connections
Note that the recommended output capacitor COUT varies according to the required output voltage.
The DC4_RANGE register field must be set according to the required output voltage.
See Section 30.4 for details of specific recommended external components.
15.16 LDO REGULATOR OPERATION
15.16.1 OVERVIEW
The WM8310 provides 11 LDO Regulators. Four of these are low-noise analogue LDOs. One of the
LDO Regulators (LDO11) can be configured to be enabled even when the WM8310 is in the OFF
state. The principal characteristics of the LDO Regulators are shown below.
LDO1
LDO2, 3
LDO4, 5, 6
LDO7, 8
LDO9, 10
LDO11
Converter Type
General
Purpose
General
Purpose
General
Purpose
Analogue
Analogue
General
Purpose
Input Voltage Range
1.5V to 5.5V (must be ≤ SYSVDD voltage)
1.71V to 5.5V
1.8V to 5.5V
Output Voltage
Range
0.9V to 3.3V
0.9V to 3.3V
0.9V to 3.3V
1.0V to 3.5V
1.0V to 3.5V
0.8V to 1.55V
Load Current Rating
Up to 300mA
Up to
200mA
Up to
100mA
Up to 200mA
Up to 150mA
Up to 25mA
Pass device
impedance @ 2.5V
1
1
2
1
2
n/a
Table 47 LDO Regulator Overview
15.16.2 LDO REGULATORS
The LDO Regulators are configurable circuits which generate accurate, low-noise supply voltages for
various system components. The LDO Regulators are dynamically programmable and can be re-
configured at any time. Two low power modes are provided for the general purpose LDOs 1-6; a
single low power mode is provided for the analogue LDOs 7-10; this enables the overall device power
consumption to be minimised at all times.



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