DS2438Z+T&R

更新时间： 2024-11-06 12:59:27

品牌	Logo	应用领域
美信 - MAXIM		电池
页数	文件大小	规格书
29页	432K
描述
Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 0.150 INCH, LEAD FREE, SOIC-8

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技术参数
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替代型号

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DS2438Z+T&R 技术参数

是否无铅：	不含铅	是否Rohs认证：	符合
生命周期：	Active	零件包装代码：	SOIC
包装说明：	SOP, SOP8,.25	针数：	8
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.39.00.01	Factory Lead Time：	6 weeks
风险等级：	1.09	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-G8	JESD-609代码：	e3
长度：	4.9 mm	湿度敏感等级：	1
信道数量：	1	功能数量：	1
端子数量：	8	最高工作温度：	85 °C
最低工作温度：	-40 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP8,.25
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	260	电源：	2.7/10 V
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)：	1 mA
最大供电电压 (Vsup)：	10 V	最小供电电压 (Vsup)：	2.4 V
表面贴装：	YES	温度等级：	INDUSTRIAL
端子面层：	Matte Tin (Sn)	端子形式：	GULL WING
端子节距：	1.27 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

DS2438Z+T&R 数据手册

DS2438

Smart Battery Monitor

FEATURES

PIN ASSIGNMENT

CꢀUnique 1-Wire^®interface requires only one

port pin for communication

GND

V_DD

CꢀProvides unique 64-bit serial number

CꢀEliminates thermistors by sensing battery

temperature on-chip

V_SENS+

V_SENS-

V_AD

CꢀOn-board A/D converter allows monitoring

of battery voltage for end-of-charge and end-

of-discharge determination

DS2438Z, DS2438AZ

8-Pin SOIC (150-mil)

CꢀOn-board integrated current accumulator

facilitates fuel gauging

CꢀElapsed time meter in binary format

Cꢀ40-byte nonvolatile user memory available

for storage of battery-specific data

CꢀReverts to low-power sleep mode on battery

pack disconnect (feature disabled on

DS2438AZ)

PIN DESCRIPTION

Data In/Out

VAD

V_SENS+

V_SENS-

VDD

GND

General A/D input

Battery current monitor input (+)

Battery current monitor input (-)

Power Supply (2.4V to 10.0V)

Ground

CꢀOperating range -40ºC to +85ºC

CꢀApplications include portable computers,

portable/cellular phones, consumer

electronics, and handheld instrumentation

No connect

DESCRIPTION

The DS2438 Smart Battery Monitor provides several functions that are desirable to carry in a battery

pack: a means of tagging a battery pack with a unique serial number, a direct-to-digital temperature

sensor which eliminates the need for thermistors in the battery pack, an A/D converter which measures

the battery voltage and current, an integrated current accumulator which keeps a running total of all

current going into and out of the battery, an elapsed time meter, and 40 bytes of nonvolatile EEPROM

memory for storage of important parameters such as battery chemistry, battery capacity, charging

methodology and assembly date. Information is sent to/from the DS2438 over a 1-Wire interface, so that

only one wire (and ground) needs to be connected from a central microprocessor to a DS2438. This

means that battery packs need only have three output connectors: battery power, ground, and the 1-Wire

interface.

Because each DS2438 contains a unique silicon serial number, multiple DS2438s can exist on the same

1-Wire bus. This allows multiple battery packs to be charged or used in the system simultaneously.

Applications for the smart battery monitor include portable computers, cellular telephones, and handheld

instrumentation battery packs in which it is critical to monitor real-time battery performance. Used in

conjunction with a microcontroller in the host system, the DS2438 provides a complete smart battery

pack solution that is fully chemistry-independent. The customization for a particular battery chemistry

and capacity is realized in the code programmed into the microcontroller and DS2438 EEPROM, and

only a software revision is necessary should a designer wish to change battery pack chemistry.

For pricing, delivery, and ordering information, please contact Maxim Direct

070605

at 1-888-629-4642, or visit Maxim’s website at www.maximintegrated.com.

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DS2438Z+T&R 替代型号

型号	品牌	替代类型	描述	数据表
DS2438Z/T&R	MAXIM	完全替代	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 0.150 INCH, SOIC-8
DS2438Z+	MAXIM	类似代替	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 0.150 INCH, LEAD FREE, SOIC-8

与DS2438Z+T&R相关器件

型号	品牌	获取价格	描述	数据表
DS244	ONSEMI	获取价格	Octal Buffer/Line Driver with 3-State Outputs
DS2441	DALLAS	获取价格	1-Cell Li-Ion Battery Manager
DS2442	ETC	获取价格	Battery Management
DS245	ONSEMI	获取价格	Octal Bus Transceiver
DS2450	DALLAS	获取价格	1-Wire Quad A/D Converter
DS2450S	DALLAS	获取价格	1-Wire Quad A/D Converter
DS2450S/T&R	MAXIM	获取价格	ADC, Successive Approximation, 16-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDSO8, 0.20
DS2450S+T&R	MAXIM	获取价格	ADC, Successive Approximation, 16-Bit, 1 Func, 4 Channel, Serial Access, CMOS, PDSO8, 0.20
DS246	ETC	获取价格	Analog IC
DS2460	DALLAS	获取价格	SHA-1 Coprocessor with EEPROM

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