Datasheet > UCC3957M-3G4

UCC3957M-3G4

更新时间： 2024-11-24 12:16:55

品牌	Logo	应用领域
德州仪器 - TI		电池
页数	文件大小	规格书
15页	296K
描述
THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT

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中文翻译

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技术参数
数据手册
替代型号

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UCC3957M-3G4 技术参数

是否无铅：	含铅	是否Rohs认证：	符合
生命周期：	Obsolete	零件包装代码：	SOIC
包装说明：	SSOP, SSOP16,.25	针数：	16
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	风险等级：	5.82
其他特性：	SELECTABLE THREE OR FOUR CELL OPERATION, OVERCURRENT PROTECTION	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
封装等效代码：	SSOP16,.25	封装形状：	RECTANGULAR
封装形式：	SMALL OUTLINE, SHRINK PITCH	峰值回流温度（摄氏度）：	NOT SPECIFIED
认证状态：	Not Qualified	座面最大高度：	1.75 mm
子类别：	Power Management Circuits	最大供电电流 (Isup)：	0.04 mA
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：	OTHER
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	3.9 mm	Base Number Matches：	1

UCC3957M-3G4 数据手册

Not Recommended for New Designs

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SLUS236B – JANUARY 1999 – REVISED SEPTEMBER 2002

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FEATURES

DESCRIPTION

Three- or Four-Cell Operation

Two-Tier Overcurrent Limiting

The UCC3957 is a BiCMOS three- or four-cell

lithium-ion battery pack protector designed to

operate with external P-channel MOSFETs.

Utilizing 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 overcharge

and overdischarge. A separate overcurrent-

protection block protects the battery pack from

excessive discharge currents.

30-µA Typical Supply-Current Consumption

3.5-µA Typical Supply Current in Sleep Mode

Smart Discharge Minimizes Losses in

Overcharge Mode

6.5-V to 20-V VDD Supply Range

Highly Accurate Internal Voltage Reference

Externally Adjustable Delays in Overcurrent

Controller

If any cell voltage exceeds the overvoltage

threshold, the appropriate external P-channel

MOSFET is turned off, preventing further charge

current. 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 P-channel MOSFET. Likewise, if any

cell voltage falls below the undervoltage limit, the

second P-channel MOSFET is turned off and only

charge current is allowed. Such a cell-voltage

condition causes the chip to go into low-power

sleep mode. Attempting to charge the battery

pack wakes up the chip. A cell-count pin (CLCNT)

is provided to program the IC for three- or four-cell

operations.

Detection of Loss-of-Cell Sense Connections

M PACKAGE

(TOP VIEW)

VDD

CLCNT

DVDD

AVDD

CDLY2

DCHG

CHG

AN1

AN2

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. If at the end of the blanking time the

overcurrent condition still exists, the external

discharge FET is turned off for a period 17 times

longer than the first blanking period, and then the

discharge FET is turned back on. If at any time a

second higher overcurrent threshold is exceeded

for more than a user programmable time, the

discharge FET is turned off, and remains off for the

same period as the first tier off time. This two tiered

overcurrent-protection scheme allows for

charging capacitive loads while retaining effective

short-circuit protection.

AN3

AN4

10 CDLY1

CHGEN

BATLO

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments

semiconductor products and disclaimers thereto appears at the end of this data sheet.

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www.ti.com

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中文翻译

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UCC3957M-3G4 替代型号

型号	品牌	替代类型	描述	数据表
UCC3957M-3	TI	类似代替	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-2G4	TI	类似代替	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT

与UCC3957M-3G4相关器件

型号	品牌	获取价格	描述	数据表
UCC3957M-3TR	ETC	获取价格	Analog IC
UCC3957M-4	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-4G4	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957M-4TR	ETC	获取价格	Analog IC
UCC3957MTR-1	TI	获取价格	4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, GREEN, PLASTIC, QSOP-16
UCC3957MTR-1G4	TI	获取价格	4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, GREEN, PLASTIC, QSOP-16
UCC3957MTR-2	ROCHESTER	获取价格	4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, GREEN, PLASTIC, QSOP-16
UCC3957MTR-2	TI	获取价格	4-CHANNEL POWER SUPPLY SUPPORT CKT, PDSO16, GREEN, PLASTIC, QSOP-16
UCC3957MTR-3	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT
UCC3957MTR-3G4	TI	获取价格	THREE-OR FOUR-CELL LITHIUM-ION PROTECTOR CIRCUIT

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