Datasheet > MAX17261

MAX17261

更新时间： 2024-09-19 14:57:59

品牌	Logo	应用领域
亚德诺 - ADI		电池仪表
页数	文件大小	规格书
32页	1951K
描述
5.1μA、ModelGauge m5 EZ多节电池电量计

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中文翻译

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MAX17261 数据手册

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MAX17261

5.1μA Multi-Cell Fuel Gauge

with ModelGauge m5 EZ

General Description

Benefits and Features

The MAX17261 is an ultra-low power fuel gauge IC which

implements the Maxim ModelGauge™ m5 algorithm. The

IC monitors a multiple-series cell battery pack with an ex-

ternal resistor divider.

● ModelGauge m5 EZ

• No Characterization Required for EZ Performance

• Robust Against Battery Variation

• Eliminates Error Near Empty Voltage

• Eliminates Coulomb Counter Drift

• Compensates for Age, Current, and Temperature

• Does Not Require Empty, Full, or Idle States

The ModelGauge m5 EZ algorithm makes fuel gauge im-

plementation easy by eliminating battery characterization

requirements and simplifying host software interac-

tion. The algorithm provides tolerance against battery di-

versity for most lithium batteries and applications.

● Low 5.1μA Operating Current

● Monitors Multiple-Cell Battery Pack

● Wide Sense Resistor Range: 1mΩ to 1000mΩ

● PCB Metal Sensing + Temperature Compensation

The algorithm combines the short-term accuracy and lin-

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

a voltage-based fuel gauge, along with temperature com-

pensation to provide industry-leading fuel gauge accura-

cy. The IC automatically compensates for cell-aging, tem-

perature, discharge rate, and provides accurate state-of-

charge (SOC) in percentage (%) and remaining capacity

in milliampere-hours (mAh) over a wide range of operat-

ing conditions. As the battery approaches the critical re-

gion near empty, the algorithm invokes a special correc-

tion mechanism that eliminates any error. The IC provides

accurate estimation of time-to-empty and time-to-full and

provides three methods for reporting the age of the bat-

tery: reduction in capacity, increase in battery resistance,

and cycle odometer.

● Supports Li+ and Variants Including LiFePO

● Thermistor or ±1°C Internal Temperature

● Dynamic Power Estimates Power Capability During

Discharge

● Time-to-Empty and Time-to-Full Estimation

● Predicts Remaining Capacity Under Theoretical Load

● No Calibration Required

● Alert Indicator for Voltage, SOC, Temperature,

Current and 1% SOC Change

Ordering Information appears at end of data sheet.

Simple Fuel Gauge Circuit Diagram

The IC provides precision measurements of current, volt-

age, and temperature. The temperature of the battery

pack is measured using an internal temperature sensor or

SYSPWR

3~5V

BATT

REG

external thermistor. A 2-wire I C interface provides access

0.1µF

to data and control registers. The IC is available in a tiny

lead-free 0.4mm pitch, 1.5mm x 1.5mm, 9-pin WLP pack-

age and 3mm x 3mm, 14-pin TDFN package.

REG

0.47µF

CELLX

MAX17261

ALRT

Applications

SDA

SCL

PROTECTION

CIRCUIT

● Tablets, 2-in-1 Laptops

● Digital Still, Video, and Action Cameras

● Medical Devices

CSPL (TDFN)

EP (TDFN)

R_SENSE

GND

CSN

● Handheld Computers and Terminals

● Financial Terminals

● Mobile Printers

● Augmented/Virtual Reality Devices

● Robots

10kΩ

NTC

SYSGND

● E-Bikes

● Battery Backups

● Wireless Speakers

ModelGauge is a trademark of Maxim Integrated Products, Inc.

19-100318; Rev 0; 5/18

12 3 4 5 6 7...32

中文翻译

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与MAX17261相关器件

型号	品牌	获取价格	描述	数据表
MAX17262	ADI	获取价格	5.2μA、ModelGauge m5 EZ单节电池电量计，内置电流检测
MAX17263	ADI	获取价格	ModelGauge m5 EZ单节/多节电池电量计，集成LED控制
MAX17263LETD+	MAXIM	获取价格	Power Supply Support Circuit,
MAX1726EUK18-T	MAXIM	获取价格	12V, Ultra-Low IQ, Low-Dropout Linear Regulators
MAX1726EUK25+T	MAXIM	获取价格	Fixed Positive LDO Regulator, 2.5V, 0.6V Dropout, CMOS, PDSO5, SOT-23, 5 PIN
MAX1726EUK25-T	MAXIM	获取价格	12V, Ultra-Low IQ, Low-Dropout Linear Regulators
MAX1726EUK33+T	MAXIM	获取价格	Fixed Positive LDO Regulator, 3.3V, 0.6V Dropout, CMOS, PDSO5, SOT-23, 5 PIN
MAX1726EUK33-T	MAXIM	获取价格	12V, Ultra-Low IQ, Low-Dropout Linear Regulators
MAX1726EUK50+T	MAXIM	获取价格	Fixed Positive LDO Regulator, 5V, 0.6V Dropout, CMOS, PDSO5, MINIATURE, SOT-23, 5 PIN
MAX1726EUK50-T	MAXIM	获取价格	12V, Ultra-Low IQ, Low-Dropout Linear Regulators

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