- 您現(xiàn)在的位置：買(mǎi)賣(mài)IC網(wǎng) > PDF目錄380966 > UCC3957 (Texas Instruments, Inc.) Three - Four Cell Lithium-Ion Protector Circuit PDF資料下載
參數(shù)資料
| 型號(hào)： | UCC3957 |
| 廠商： | Texas Instruments, Inc. |
| 英文描述： | Three - Four Cell Lithium-Ion Protector Circuit |
| 中文描述： | 三-四節(jié)鋰離子保護(hù)電路 |
| 文件頁(yè)數(shù)： | 1/8頁(yè) |
| 文件大小： | 121K |
| 代理商： | UCC3957 |
UCC3957 -1/-2/-3/-4
PRELIMINARY
SLUS236 - JANUARY 1999
FEATURES
Three or Four Cell Operation
Two Tier Overcurrent Limiting
30
μ
A Typical Supply Current
Consumption
3.5
μ
A Typical Supply Current in Sleep
Mode
Smart Discharge Minimizes Losses in
Overcharge Mode
6.5V to 20V VDD Supply Range
Highly Accurate Internal Voltage
Reference
Externally Adjustable Delays in
Overcurrent Controller
Detection of Loss of Cell Sense
Connections
Three - Four Cell Lithium-Ion Protector Circuit
BLOCK DIAGRAM
UDG-97060
DESCRIPTION
The UCC3957 is a BiCMOS three or four cell lithium-ion battery pack
protector designed to operate with external P-channel MOSFETs. Uti-
lizing external P-channel MOSFETs provides the benefits of no loss of
system ground in an overdischarge state, and protects the IC as well as
battery cells from damage during an overcharge state. An internal state
machine runs continuously to protect each lithium-ion cell from over-
charge and overdischarge. A separate overcurrent protection block pro-
tects the battery pack from excessive discharge currents.
If any cell voltage exceeds the overvoltage threshold, the appropriate ex-
ternal P-channel MOSFET is turned off, preventing further charge cur-
rent. An external N-channel MOSFET is required to level shift to this high
side P-channel MOSFET. Discharge current can still flow through the
second PFET. Likewise, if any cell voltage falls below the undervoltage
limit, the second P-channel MOSFET is turned off and only charge cur-
rent is allowed. Such a cell voltage condition will cause the chip to go
into low power sleep mode. Attempting to charge the battery pack will
wake up the chip. A cell count pin (CLCNT) is provided to program the IC
for three or four cell operations.
A two tiered overcurrent controller and external current shunt protect the
battery pack from excessive discharge currents. If the first overcurrent
threshold level is exceeded, an internal timing circuit charges an external
capacitor to provide a user programmable blanking time.
(continued)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| UCC5510 | Low Voltage Differential LVD/SE SCSI 9 Line Terminator |
| UCC5510 | Low Voltage Differential (LVD/SE) SCSI 9 Line Terminator(低壓差分小型計(jì)算機(jī)系統(tǒng)接口9線終端匹配器) |
| UCC5610N | QUAD OP-AMP & PROGRAMMABLE VOLTAGE REFERENCE |
| UCC5610PWP | QUAD OP-AMP & PROGRAMMABLE VOLTAGE REFERENCE |
| UCC5610QP | QUAD OP-AMP & PROGRAMMABLE VOLTAGE REFERENCE |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| UCC3957M-1 | 功能描述:電池管理 3-4-Cell Lithium-Ion Protection IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| UCC3957M-1G4 | 功能描述:電池管理 3-4-Cell Lithium-Ion Protection IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| UCC3957M-2 | 功能描述:電池管理 3-4-Cell Lithium-Ion Protection IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
| UCC3957M-2 WAF | 制造商:Texas Instruments 功能描述: |
| UCC3957M-2G4 | 功能描述:電池管理 3-4-Cell Lithium-Ion Protection IC RoHS:否 制造商:Texas Instruments 電池類型:Li-Ion 輸出電壓:5 V 輸出電流:4.5 A 工作電源電壓:3.9 V to 17 V 最大工作溫度:+ 85 C 最小工作溫度:- 40 C 封裝 / 箱體:VQFN-24 封裝:Reel |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。