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AXP221 Datasheet(PDF) 26 Page - List of Unclassifed Manufacturers

Part # AXP221
Description  PMIC Optimized For Multi-Core High-Performance System
PDF  52 Pages
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Manufacturer  ETC2 [List of Unclassifed Manufacturers]
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AXP221 Datasheet(HTML) 26 Page - List of Unclassifed Manufacturers

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AXP221
PMIC Optimized For Multi-Core High-Performance System
PAGE 26
Copyright © 2013 X-Powers Limited. All Rights Reserved.
Datasheet
Revision 1.2
RTC-LDO
LDO
3.0V
1
RTC
30mA
ALDO1
LDO
OFF
OFF
N/A
300mA
ALDO2
LDO
1.8V
1
N/A
300mA
ALDO3
LDO
3.0V
1
N/A
200mA
LDOIO0
LDO
OFF
OFF
N/A
100mA
LDOIO1
LDO
OFF
OFF
N/A
100mA
DLDO1
LDO
OFF
OFF
N/A
400mA
DLDO2
LDO
OFF
OFF
N/A
200mA
DLDO3
LDO
OFF
OFF
N/A
200mA
DLDO4
LDO
OFF
OFF
N/A
200mA
ELDO1
LDO
OFF
OFF
N/A
400mA
ELDO2
LDO
OFF
OFF
N/A
200mA
ELDO3
LDO
OFF
OFF
N/A
200mA
DC5LDO
LDO
1.1V
1
N/A
200mA
DC1SW
Switch
OFF
OFF
N/A
400mA
AXP221 包含 5 路同步降压型 DC-DC、14 路 LDO、2 路 Switch，多种启动时序及控制方式。
DC-DC 的工作频率默认为 3MHz，可以通过设置寄存器来调整，外围可使用小型电感和电容元件。
5 个 DC-DC 都可以设置成 PWM 模式或自动模式 ( 由 AXP221 根据负载的大小自动切换 )，参见 “ 寄
存器
REG80H”。
9.4.1.
DC-DC1/2/3/4/5
DCDC1 输出电压范围为 1.6V-3.4V，DCDC2/4 输出电压为 0.6V-1.54V，DCDC3 输出电压为
0.6V-1.86V，DCDC5 输出电压为 1.0V-2.55V, 可由寄存器设置 .
DCDC 输出电容推荐使用 10uF X7R 以上小 ESR 陶瓷电容；推荐使用 1.5uH 电感，其中电感饱和
电流需大于此电源通路最大需求电流的
50% 以上。
9.4.2.
RTC-LDO
LDO1 永远开启，可以为应用系统的实时时钟电路 (RTC) 提供不间断的电源，其驱动能力为 30mA。
9.4.3.
ALDO1/2/3
ALDO1/2/3 采用了低噪声设计，可以为应用系统的模拟电路提供电源，其驱动能力分别为 300mA
/300mA /200mA。



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