参数资料
型号: AS3658-BCTP
厂商: ams
文件页数: 43/158页
文件大小: 0K
描述: IC PMU POWER/AUDIO 124-CTBGA
标准包装: 2,500
应用: 便携式设备
电流 - 电源: 7mA
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 124-TFBGA
供应商设备封装: 124-CTBGA(8x8)
包装: 带卷 (TR)
AS3658
Data Sheet Confidential
- Detailed Description-Power Management Functions
8.6
Battery switch SINT (Vsupply, Battery)
Figure 13. Battery Switch Diagram
 
 
 
 
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The internal Battery switch enables normal operation of the System during trickle charging of a deeply discharged
battery.
The Switch provides the following functions:
Trickle charging, if V BAT is smaller than ResVolt. The current is defined in TrickleCurrent[1:0]
PMOS is switched on if V BAT is greater then ResVolt.
Constant current charging, if the external charger is in linear operation, or the USB charger is used. the current is
defined by constant_current[2:0].
Current limitation during tricklecharge, to avoid inrush current: I trickle_Ilimit
Current limitation during Constant current charging to avoid inrush current: I CC_Ilimit
Undervoltage protection of Vsupply during trickle charge or constant current charge with linear charger. The
charging current is regulated down, if Vsupply drops below V supply_min
Ideal diode operation in Isolate Battery mode and disable charging mode, during charger is unplugged. This
operation is for the internal battery switch only. External battery switch is open in that mode. Regulation will start, if
the VSUPPLY voltage drops by more then V Diode below the V BAT voltage. After three milliseconds debounce time,
if no charger is recognized, the internal and external battery switch (if enabled) is closed to have a low Ω ic
connection between V BAT and VSUPPLY.
Table 35. Battery switch parameters
Symbol
V Supply
Parameter
Input voltage
Min
3.0
Typ
Max
5.5
Unit
V
Note
PIN VSUP_SW1,VSUP_SW2
I trickle_limit
Trickle current limit
400
mA
Current Limit in constant current
I CC_limit
Constant current
current limit
800
mA
mode (Linear charger mode or USB
charger only)
Note: applies only for the battery
switch alone
www.austriamicrosystems.com
Revision 1v13
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