UCC3957-4M

更新时间： 2024-09-20 13:15:07

品牌	Logo	应用领域
德州仪器 - TI		电池
页数	文件大小	规格书
8页	119K
描述
4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, 0.635 MM PITCH, SSOP-16

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技术参数
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UCC3957-4M 技术参数

生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	0.150 INCH, 0.635 MM PITCH, SSOP-16	针数：	16
Reach Compliance Code：	unknown	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.7
Is Samacsys：	N	可调阈值：	NO
模拟集成电路 - 其他类型：	POWER SUPPLY SUPPORT CIRCUIT	JESD-30 代码：	R-PDSO-G16
长度：	4.9 mm	信道数量：	4
功能数量：	1	端子数量：	16
最高工作温度：	70 °C	最低工作温度：	-20 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	SSOP
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE, SHRINK PITCH
认证状态：	Not Qualified	座面最大高度：	1.75 mm
最大供电电压 (Vsup)：	20 V	最小供电电压 (Vsup)：	6.5 V
标称供电电压 (Vsup)：	16 V	表面贴装：	YES
技术：	BICMOS	温度等级：	COMMERCIAL
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	宽度：	3.9116 mm
Base Number Matches：	1

UCC3957-4M 数据手册

UCC3957 -1/-2/-3/-4

PRELIMINARY

Three - Four Cell Lithium-Ion Protector Circuit

FEATURES

DESCRIPTION

• Three or Four Cell Operation

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.

• Two Tier Overcurrent Limiting

• 30µA Typical Supply Current

Consumption

• 3.5µA Typical Supply Current in Sleep

Mode

• Smart Discharge Minimizes Losses in

Overcharge Mode

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.

• 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

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)

BLOCK DIAGRAM

UDG-97060

SLUS236 - JANUARY 1999

12 3 4 5 6 7 8

中文翻译

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与UCC3957-4M相关器件

型号	品牌	获取价格	描述	数据表
UCC3957M	TI	获取价格	4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, 0.150 INCH, SSOP-16
UCC3957M-1	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-1G4	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-1TR	ETC	获取价格	Analog IC
UCC3957M-2	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-2G4	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-2TR	ETC	获取价格	Analog IC
UCC3957M-3	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-3G4	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-3TR	ETC	获取价格	Analog IC

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