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參數(shù)資料
| 型號(hào)： | UCC3958 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Single Cell Lithium-Ion Battery Protection Circuit |
| 中文描述： | 單節(jié)鋰離子電池保護(hù)電路 |
| 文件頁(yè)數(shù)： | 6/8頁(yè) |
| 文件大小： | 289K |
| 代理商： | UCC3958 |
6
UCC3958 -1/-2/-3/-4
Figure 6. SIngle Cell Lithium-Ion Battery Protector IC Application Diagram
UDG-97152
Controlled Charge/Discharge Mode
When the chip senses an over-voltage condition, it pre-
vents any additional charging, but allows discharge. This
is accomplished by activating a linear control loop which
controls the gate of the MOSFET based on the differen-
tial voltage across its drain to source terminals. The lin-
ear loop attempts to regulate the differential voltage
across the MOSFET to 100mV. When a light load is ap-
plied to the part, the loop adjusts the impedance of the
MOSFET to maintain 100mV across it. As the load in-
creases, the impedance of the MOSFET is decreased to
maintain the 100mV control. At heavy loads (still below
“over-current” limit level), the loop will not maintain regu-
lation and will drive the gate of the MOSFET to the bat-
tery voltage (not the charge-pump output voltage).
MOSFET R
DSON
in the over-voltage state will be slightly
higher than R
DSON
during normal operation. The voltage
drop (and associated power loss) across the internal
MOSFET in this mode of operation is lower than the typi-
cal solution of two external back-to-back MOSFETs,
where the body diode is conducting.
The
0
100
200
300
400
500
600
700
2.00
2.10
2.20
2.30
2.40
CELL VOLTAGE (V)
M
0.2Amp
1.0Amp
2.0Amp
Figure 5. Typical MOSFET Voltate Drop During
Charge in UV vs. Cell Voltage.
APPLICATION INFORMATION (continued)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC3958DP-1 | 功能描述:IC L-I PROTECTOR CIRCUIT 16-SOIC RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 產(chǎn)品變化通告:BQ77908, BQ77910 Discontinuation 20/Mar/2012 標(biāo)準(zhǔn)包裝:1 系列:- 功能:電池監(jiān)控器，過(guò)壓/欠壓保護(hù) 電池化學(xué):鋰離子（Li-Ion）、鋰聚合物（Li-Pol） 電源電壓:5.6 V ~ 35 V 工作溫度:-25°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:38-TFSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:38-TSSOP 包裝:剪切帶 (CT) 其它名稱:296-28784-1 |
| UCC3958DP-3 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| UCC3958DP-4 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| UCC3958PWP-1 | 制造商:Rochester Electronics LLC 功能描述:- Bulk |
| UCC3958PWP-2 | 功能描述:IC L-I PROTECTOR CIRCUIT 24TSSOP RoHS:否 類別:集成電路 (IC) >> PMIC - 電池管理 系列:- 其它有關(guān)文件:STC3100 View All Specifications 特色產(chǎn)品:STC3100 - Battery Monitor IC 標(biāo)準(zhǔn)包裝:4,000 系列:- 功能:燃料，電量檢測(cè)計(jì)/監(jiān)控器 電池化學(xué):鋰離子（Li-Ion） 電源電壓:2.7 V ~ 5.5 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-MiniSO 包裝:帶卷 (TR) 其它名稱:497-10526-2 |
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