Datasheet > MAX17320

MAX17320

更新时间： 2024-02-10 09:34:36

品牌	Logo	应用领域
美信 - MAXIM		仪表
页数	文件大小	规格书
179页	4192K
描述
2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and SHA-256 Authentication

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数据手册

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MAX17320 数据手册

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MAX17320

2S-4S ModelGauge m5 EZ Fuel Gauge with

Protector, Internal Self-Discharge Detection,

and SHA-256 Authentication

General Description

Benefits and Features

The MAX17320 is a 38μA I stand-alone pack-side fuel

● Battery Health + Programmable Safety/Protection

• Overvoltage (Temperature Dependent)

• Overcharge/Overdischarge/Short-Circuit Current

• Over/Undertemperature

gauge IC with protector, battery internal self-discharge de-

tection, and optional SHA-256 authentication for 2 to 4 se-

ries lithium-ion/polymer batteries.

• Undervoltage + SmartEmpty

The IC monitors the voltage, current, temperature and

state of the battery to provide protection against over/un-

dervoltage, overcurrent, short-circuit, over/undertempera-

ture, overcharge, and internal self-discharge conditions

using external high-side N-FETs, and provides charging

prescription to ensure that the battery operates under safe

conditions, thereby prolonging the life of the battery. The

IC balances the cells using internal FETs. During prequal

charging, the IC uses the CHGFET to linearly control

charging.

• Battery Internal Self-Discharge Detection

• Ideal Diode Discharge During Charge Fault

• Charging Prescriptions (JEITA)

• Prequal Charge Control with CHG FET

● ModelGauge m5 EZ Algorithm

• Percent, Capacity, Time-to-Empty/Full, Age

• Cycle+™ Age Forecast

● Precision Measurement Without Calibration

• Current, Voltage, Power, Time, Cycles

• Die Temperature, 4 Thermistors ±1˚C

To prevent battery pack cloning, the IC integrates

SHA-256 authentication with a 160-bit secret key. Each IC

incorporates a unique 64-bit ID.

● Cell Balancing with Internal FETs

● SHA-256 Authentication

● Nonvolatile Memory for Stand-Alone Operation

• History Logging, User Data (84 Bytes)

The fuel gauge uses Maxim ModelGauge

m5 algorithm

that combines the short-term accuracy and linearity of a

coulomb counter with the long-term stability of a voltage-

based fuel gauge to provide industry-leading fuel gauge

accuracy. The IC automatically compensates for cell ag-

ing, temperature, and discharge rate, and provides accu-

rate state-of-charge (SOC) in milliampere-hours (mAh) or

percentage (%) over a wide range of operating conditions.

● Low Quiescent Current

• FETs Enabled: 38μA Active

● Pushbutton Wakeup—Eliminates System

Consumption Until Button Press

● Always-On LDO

● Dynamic Power—Estimates Power Capability

● SBS 1.1 Compatible Register Set

The IC provides a configurable always-on LDO that can

power small critical loads on the system side without over-

loading the cells even under fault conditions. Dynamic

power functionality provides the instantaneous maximum

battery output power which can be delivered to the system

without violating the minimum system input voltage.

Ordering Information appears at end of data sheet.

Simplified Block Diagram

3 TERM

FUSE*

PACK+

A Maxim 1-Wire or 2-wire I C/SMBus interface provides

access to data and control registers. The IC is available in

a lead-free, 2.4mm x 2.6mm 30-bump 0.4mm pitch WLP

and 4mm x 4mm 24-pin TQFN packages.

PFAIL* CHG

DIS

ZVC

PCKP

AOLDO*

REG3

REG2

BATTS

CELL3*

CELL2*

ALRT*

Applications

SDA/DQ

SCL/OD

TH4*

● Smartphones, Tablets, and 2-in-1 Laptops

● Medical Devices, Health and Fitness Monitors

● Digital Still, Video, and Action Cameras

● Handheld Computers, Radios, and Terminals

● Power Tools, Wireless Speakers, and Drones

● Smart Batteries and Battery Backup

TH3*

CELL1

TH2*

MAX17320

GND

CSP

TH1*

CSN

PACK-

*OPTIONAL

ModelGauge is a trademark of Maxim Integrated Products, Inc.

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

Cycle+ is a trademark of Maxim Integrated Products, Inc.

19-100749; Rev 7; 8/20

12 3 4 5 6 7...179

中文翻译

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与MAX17320相关器件

型号	品牌	获取价格	描述	数据表
MAX17320G10	MAXIM	获取价格	2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and S
MAX17320G12	MAXIM	获取价格	2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and S
MAX17320G20	MAXIM	获取价格	2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and S
MAX17320G22	MAXIM	获取价格	2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and S
MAX17320X10	MAXIM	获取价格	2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and S
MAX17320X12	MAXIM	获取价格	2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and S
MAX17320X20	MAXIM	获取价格	2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and S
MAX17320X22	MAXIM	获取价格	2S-4S ModelGauge m5 EZ Fuel Gauge with Protector, Internal Self-Discharge Detection, and S
MAX1732CHD	MAXIM	获取价格	Current-Mode SMPS Controller
MAX1733	MAXIM	获取价格	Low-Voltage, Step-Down DC-DC Converters in SOT23

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