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WM8321GEFL/RV 参数 Datasheet PDF下载

WM8321GEFL/RV图片预览
型号: WM8321GEFL/RV
PDF下载: 下载PDF文件 查看货源
内容描述: 处理器电源管理子系统 [Processor Power Management Subsystem]
分类和应用:
文件页数/大小: 253 页 / 1578 K
品牌: WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
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Production Data  
WM8321  
2.7V – 5.5V  
DC3VDD  
DC3FB  
CIN  
L
DC3LX  
VO  
COUT  
DC3GND  
WM8321  
DC4VDD  
DC4FB  
DC4_SLV = 1  
CIN  
L
DC4LX  
VO  
Load  
COUT  
DC4GND  
Figure 21 DC-DC3 / DC-DC4 Dual Mode Converter Connections  
The recommended output capacitor COUT varies according to the required transient response. Note  
that the DCm_CAP register field must be set according to the output capacitance on each DC-DC  
Converter in order to achieve best performance.  
See Section 30.3 for details of specific recommended external components.  
15.15 LDO REGULATOR OPERATION  
15.15.1 OVERVIEW  
The WM8321 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 WM8321 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  
Output Voltage Range  
Load Current Rating  
1.5V to 5.5V  
0.9V to 3.3V  
Up to 300mA  
1.5V to 5.5V  
0.9V to 3.3V  
1.5V to 5.5V  
0.9V to 3.3V  
1.71V to 5.5V  
1.0V to 3.5V  
Up to 200mA  
1.71V to 5.5V  
1.0V to 3.5V  
Up to 150mA  
1.8V to 5.5V  
0.8V to 1.55V  
Up to 25mA  
Up to  
Up to  
200mA  
100mA  
Pass device  
1  
1  
2  
1  
2  
n/a  
impedance @ 2.5V  
Table 43 LDO Regulator Overview  
PD, February 2012, Rev 4.0  
93  
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