参数资料
型号: AS3658D-BCTP
厂商: ams
文件页数: 40/158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
Figure 10. Backup Battery Charger Block Diagram
Voltage limited
Current source
V SUPPLY
Digital
Control
Table 33. Backup Battery Charger Characteristics
Rb
V BACK
symbol
V SUPPLY
V BBC
Parameter
Supply voltage range
Maximum charging
voltage
Min
3.0
3.3
2.4
2.9
Typ
2.5
3.0
Max
5.5
5.5
2.6
3.1
Unit
V
V
Note
BBCVolt=’0’
BBCVolt=’1’
BBCVolt=’0’
BBCVolt=’1’
I BBC
Charge current
-30%
BBCCur +30%
A
Value is set by BBCCur in the
Backup Battery Charger register
V DELTA
Delta voltage for
resistive mode
160
220
300
mV
BBCResOff=’0’
20
BBCResOff=’0’
I VSUPPLY
Supply current
30
μA
BBCResOff=’1’
Table 34. Backup Battery Charger Register
0.5
BBCPwrSave=’1’; backup battery
full.
Addr: 38
Backup Battery Charger
This register controls the Backup battery charger mode
Bit
Bit Name
Default Access
00b
Description
Backup battery charger is disabled
Backup battery charger is enabled in states “Power
1:0
BBCMode
00b
R/W
01b
Off mode”, “standby mode” and “Active mode”.
(32kHz OSC has to be enabled in that mode
rtcmode=01b or 10b)
Backup battery charger is enabled in state “Active
1Xb
0
mode” and “standby mode”. (32kHz OSC has to be
enabled in that mode rtcmode=01b or 10b)
Enable output resistor
2
BBCResOff
0
R/W
1
Bypass output resistor
This value determines the charge current I BBC .
00b
I BBC =50μA
4:3
BBCCur
00b
R/W
10b
I BBC =200μA
01b
11b
I BBC =100μA
I BBC =400μA
www.austriamicrosystems.com
Revision 1v13
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