参数资料
| 型号： | AS3658-BCTP |
| 厂商： | ams |
| 文件页数： | 53/158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) |
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AS3658
Data Sheet Confidential
- Detailed Description-Power Management Functions
above the battery voltage. In case the AS3658 device is reset the charge controller will also be reset, even if a charge
adapter is applied to the VCHARGER or V_USB pin.
Charging deeply discharged batteries
To be able to charge even completely discharged batteries the AS3658 device contains an internal voltage regulator
that uses the voltage of the external charge adapter at pin VCHARGER or V_USB to generate a bootstrap voltage
V 2_5V to supply the internal circuitry necessary for charging. As soon as the battery voltage exceeds 2.5V, the
bootstrap regulator is disabled and the battery voltage will be used to generate the internal supply voltage to supply the
charger circuitry.
Low current (trickle) charging
Trickle charge mode is started when an external charge adapter has been detected and ChEn or usb_chgEn is set,
and the battery voltage at pin V_BAT is below the ResVoltRise threshold V RESRISE . The Battery switch is open in that
case (batsw_on=1 batsw_mode=0). Bits ChAct and/or USBChAct and Trickle will be set in the Charger Status
registers. In this mode the charge current into the battery will be limited to TrickleCurrent (set in the Charger Current
register) by the battery switch to prevent undue stress on either the battery or any of the charger components in case
of deeply discharged batteries. if Vsupply drops below V supply_min threshold the trickle current is regulated down, to
keep the Vsupply voltage up, even with an current limited charger (e.g.:USB charger). Once V RESRISE has been
exceeded, the battery switch will be closed and the charge controller will proceed to constant current charge mode.
The Vsupply voltage of the step down charger will be set to Vcurr_preset to prevent undervoltage on vsupply during
the transition between Trickle and constant current charging.
Constant current charging
Constant current charging is initiated by setting bit ChEn and/or USBChEn in the Charger Control register, and
resetting the No_charging bit. Note that ChEn and/or USBChEn should be set by default to enable operation of the
device without a battery connected to the system. The ChAct and/or USBChAct bit is set when the charger has started,
and the charge current into the battery will be limited to ConstantCurrent (set in the Charger Current register) by the
battery charge controller. When the battery approaches full charge, its instantaneous voltage will exceed the charge
termination threshold V CHOFF . V CHOFF depends on the ChVoltEOC .The top-off charge mode will be started (bit CVM
will be set).
Constant voltage charging
Constant voltage charge mode is initiated and the CVM bit will be set when the V CHOFF threshold has been exceeded
for the first time and bit Pulse is not set. In the following the charge controller will act to regulate the battery voltage to
a value set by ChVoltEOC in the Charger Config register.
The charge current is monitored during constant voltage charging. It will be decreasing from its initial value during
constant current charging and eventually drop below the value set by TrickleCurrent in the Charger Current register. If
the measured charge current is less than or equal to TrickleCurrent and the battery voltage is larger than V CHRES , the
charging cycle is terminated and EOC is set. Then the charge controller starts the EOC operation.
EOC operation
There are two possibilities:
1. If isolate_bat=1 the battery switch will be switch off and the battery charger regulates to its highest voltage V chlimit. .
The advantage of this mode is a longer lifetime of the Li+ battery, because there is no discharging after the EOC
condition. If autoresume=1 and the battery voltage drops below V CHRES the battery charger continues charging, by
checking in trickle charge mode, if there is a battery connected, and then starting with constant voltage.
2. If isolate_bat=0 the battery switch remains closed for step down charger or will be closed for linear and usb charger,
and the power to the system is supplied by the battery. The battery charger and the USB charger regulates to V EOC ,
in case the battery is removed. If autoresume=1 and the battery voltage drops below V CHRES the battery charger
continues charging, by checking in trickle charge mode, if there is a battery connected, and then starting with
battery charging.
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| AS3658C | 功能描述:Portable Equipment PMIC 124-CTBGA (8x8) 制造商:ams 系列:- 包装:带卷（TR） 零件状态:有效 应用:便携式设备 电流 - 电源:7mA 电压 - 电源: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 供应商器件封装:124-CTBGA（8x8） 标准包装:2,500 |
| AS3658C-BCTP | 功能描述:IC PMU POWER/AUDIO 124-CTBGA RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 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:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
| AS3658D | 功能描述:Portable Equipment PMIC 124-CTBGA (8x8) 制造商:ams 系列:- 包装:带卷（TR） 零件状态:有效 应用:便携式设备 电流 - 电源:7mA 电压 - 电源: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 供应商器件封装:124-CTBGA（8x8） 标准包装:2,500 |
| AS3658-DB | 制造商:ams 功能描述:Demo Board + USB Box + I2S audio board |
| AS3658D-BCTP | 功能描述:IC PMU POWER/AUDIO 124-CTBGA RoHS:是 类别:集成电路 (IC) >> PMIC - 电源管理 - 专用 系列:- 标准包装:1 系列:- 应用:手持/移动设备 电流 - 电源:- 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:14-WFDFN 裸露焊盘 供应商设备封装:14-LLP-EP（4x4） 包装:Digi-Reel® 配用:LP3905SD-30EV-ND - BOARD EVALUATION LP3905SD-30 其它名称:LP3905SD-30DKR |
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