Datasheet > DS2784

DS2784

更新时间： 2024-09-15 14:57:19

品牌	Logo	应用领域
亚德诺 - ADI		电池
页数	文件大小	规格书
40页	2301K
描述
独立式、单节电池电量计IC，带有Li+电池保护和SHA-1认证

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中文翻译

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数据手册

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DS2784 数据手册

DS2784

1-Cell Fuel Gauge with FuelPack,

Protector, and SHA-1 Authentication

General Description

Features

● Precision Voltage, Temperature, and Current

The DS2784 operates from 2.5V to 4.6V for integration in

battery packs using a single lithium-ion (Li+) or Li+ poly-

mer cell. Available capacity is reported in mAh and as a

percentage. Safe operation is ensured with the included

Li+ protection function and SHA-1-based challenge-

response authentication.

Measurement System

● Available Capacity Estimated from Coulomb

Count, Discharge Rate, Temperature, and Cell

Characteristics

● Estimates Cell Aging Using Learn Cycles

● Uses Low-Cost Sense Resistor

Precision measurements of voltage, temperature, and

current, along with cell characteristics and application

parameters are used to estimate capacity. The available

capacity registers report a conservative estimate of the

amount of charge that can be removed given the current

temperature and discharge rate.

● Allows for Calibration of Gain and Temperature

Coefficient

● Li+ Safety Circuitry—Overvoltage, Undervoltage,

Overcurrent, Short-Circuit Protection

In addition to the nonvolatile (NV) storage for cell compen-

sation and application parameters, 16 bytes of EEPROM

memory is made available for the exclusive use of the

host system and/or pack manufacturer. This facilitates

battery lot and date tracking or NV storage of system or

battery usage statistics.

● Programmable Safety Thresholds for Overvoltage

and Overcurrent

● Authentication Using SHA-1 Algorithm and 64-Bit

Secret

● 32-Byte Parameter EEPROM

● 16-Byte User EEPROM

A 1-Wire interface provides serial communication at

16kbps or 143kbps to access data registers, control

registers, and user memory. Additionally, 1-Wire com-

munication enables challenge-response pack authentica-

tion using SHA-1 as the hash algorithm in a hash-based

message authentication code (HMAC) authentication

protocol.

● Maxim 1-Wire Interface with 64-Bit Unique ID

● Tiny, Pb-Free, 14-Pin TDFN Package Embeds Easily

in Battery Packs Using Thin Prismatic Cells

Applications

● Health and Fitness Monitors

● Digital Still, Video, and Action Cameras

● Medical Devices

Simple Fuel Gauge Circuit Diagram

● Handheld Computers and Terminals

● Handheld Radios

PK+

● Home and Building Automation, Sensors

● Smart Batteries

150

● Power Tools

PLS

VDD

VIN

150

DATA

PK-

DS2784

PIO

CTG

Ordering Information appears at end of data sheet.

SNS

VSS

0.1µF

5.1V

RSNS

Modes and commands are capitalized for clarity.

1-Wire is a registered trademark of Maxim Integrated Products,

Inc.

19-4636; Rev 5; 1/17

12 3 4 5 6 7...40

中文翻译

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与DS2784相关器件

型号	品牌	获取价格	描述	数据表
DS2784_09	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1
DS2784_10	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1
DS2784_12	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
DS2784G	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
DS2784G R	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
DS2784G T	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
DS2784G+	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication
DS2784G+R	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li Protector and SHA-1 Authentication
DS2784G+T	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li Protector and SHA-1 Authentication
DS2784G+T&R	MAXIM	获取价格	1-Cell Stand-Alone Fuel Gauge IC with Li+ Protector and SHA-1 Authentication

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