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参数资料
| 型号： | X3100V28Z |
| 厂商： | INTERSIL CORP |
| 元件分类： | 电源管理 |
| 英文描述： | 4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO28 |
| 封装： | ROHS COMPLIANT, PLASTIC, MO-153AE, TSSOP-28 |
| 文件页数： | 6/41页 |
| 文件大小： | 561K |
| 代理商： | X3100V28Z |
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14
FN8110.1
January 3, 2008
Over-charge Protection
The X3100 and X3101 monitor the voltage on each
battery cell (VCELL). If for any cell, VCELL > VOV for a
time exceeding TOV, then the Charge FET will be
switched OFF (OVP/LMON = VCC). The device has
now entered Over-charge protection mode (Figure 3).
The status of the discharge FET (via pin UVP) will
remain unaffected.
While in over-charge protection mode, it is possible to
change the state of the OVPC bit in the control register
such that OVP/LMON = Vss (Charge FET = ON).
Although the OVPC bit in the control register can be
changed, the change will not be seen at pin OVP until
the X3100 or X3101 returns from over-charge protec-
tion mode.
The over-charge detection delay TOV, is varied using a
capacitor (COV) connected between pin OVT and
GND. A typical delay time is shown in Table 10. The
delay TOV that results from a particular capacitance
COV, can be approximated by the following linear
equation:
TOV (s) ≈ 10 x COV (F).
Table 19. Typical over-charge detection time
The device further continues to monitor the battery cell
voltages, and is released from over-charge protection
mode when VCELL< VOVR, for all cells. When the
X3100 or X3101 is released from over-charge protec-
tion mode, the charge FET is automatically switched
ON (OVP/LMON = VSS). When the device returns from
over-charge protection mode, the status of the dis-
charge FET (pin UVP/OCP) remains unaffected.
The value of VOV can be selected from the values
shown in Table 4 by setting bits VOV1, VOV0. These
bits are set by using the WCFIG instruction to write to
the configuration register.
Figure 3. Over-charge Protection Mode—Event Diagram
Symbol
COV
Delay
TOV
0.1F
1.0s (Typ)
VCELL
OVP/LMON
Normal Operation Mode
Over-charge
VOV
VOVR
TOV
Protection
Mode
Normal Operation Mode
VCC
VSS
Event
0
1
2
3
X3100, X3101
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相关代理商/技术参数 |
参数描述 |
|---|---|
| X3101 | 制造商:XICOR 制造商全称:Xicor Inc. 功能描述:3 or 4 Cell Li-Ion Battery Protection and Monitor IC |
| X3101PT-V | 制造商:XICOR 制造商全称:Xicor Inc. 功能描述:3 or 4 Cell Li-Ion Battery Protection and Monitor IC |
| X3101V28 | 功能描述:IC PROTECT/MONITOR 3CELL 28TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
| X3101V28C7988 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| X3101V28T1 | 功能描述:IC PROTECT/MONITOR 3CELL 28TSSOP RoHS:否 类别:集成电路 (IC) >> PMIC - 电池管理 系列:- 标准包装:1 系列:- 功能:充电管理 电池化学:锂离子（Li-Ion）、锂聚合物（Li-Pol） 电源电压:3.75 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:SC-74A，SOT-753 供应商设备封装:SOT-23-5 包装:剪切带 (CT) 产品目录页面:669 (CN2011-ZH PDF) 其它名称:MCP73831T-2ACI/OTCT |
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