Datasheet > DS2438

DS2438

更新时间： 2024-10-04 14:58:19

品牌	Logo	应用领域
亚德诺 - ADI		电池
页数	文件大小	规格书
29页	383K
描述
智能电池监测器

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中文翻译

获取价格

数据手册

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DS2438 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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中文翻译

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与DS2438相关器件

型号	品牌	获取价格	描述	数据表
DS2438AZ	MAXIM	获取价格	Smart Battery Monitor
DS2438AZ+	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 0.150 INCH, LEAD FREE, SOIC-8
DS2438K	ETC	获取价格	Smart Battery Monitor Evaluation Kit
DS2438Z	DALLAS	获取价格	Smart Battery Monitor
DS2438Z/T&R	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 0.150 INCH, SOIC-8
DS2438Z+	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 0.150 INCH, LEAD FREE, SOIC-8
DS2438Z+T&R	MAXIM	获取价格	Power Supply Support Circuit, Fixed, 1 Channel, PDSO8, 0.150 INCH, LEAD FREE, SOIC-8
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

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