Datasheet > MAX17215

MAX17215

更新时间： 2024-11-08 14:57:55

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描述
独立式ModelGauge m5电量计，集成SHA-256认证

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数据手册

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MAX17215 数据手册

EVALUATION KIT AVAILABLE

MAX17201/MAX17205/

MAX17211/MAX17215

Stand-Alone ModelGauge m5 Fuel Gauge

with SHA-256 Authentication

General Description

Beneﬁts and Features

The MAX1720x/MAX1721x are ultra-low power stand-alone

fuel gauge ICs that implement the Maxim ModelGauge™

m5 algorithm without requiring host interaction for configura-

tion. This feature makes the MAX1720x/MAX1721x excellent

pack-side fuel gauges. The MAX17201/MAX17211 monitor a

single cell pack. The MAX17205/MAX17215 monitor and bal-

ance a 2S or 3S pack or monitor a multiple-series cell pack.

● ModelGauge m5 Algorithm

• Eliminates Error when Approaching Empty Voltage

• Eliminates Coulomb-Counter Drift

• Current, Temperature, and Age Compensated

• Does Not Require Empty, Full, or Idle States

• No Characterization Required for EZ Performance

(See the ModelGauge m5 EZ Performance Section)

• Cycle+ Age Forecasting Observes Lifespan

To prevent battery pack cloning, the ICs integrate SHA-

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

incorporates a unique 64-bit ID.

● Nonvolatile Memory for Stand-Alone Operation

• Learned Parameters and History Logging

• Up to 75 Words Available for User Data

The ModelGauge™ m5 algorithm combines the short-term

accuracy and linearity of a coulomb counter with the long-

term stability of a voltage-based fuel gauge, along with

temperature compensation to provide industry-leading

fuel gauge accuracy. The IC automatically compensates

for cell aging, temperature, and discharge rate, and pro-

vides accurate state of charge (SOC) in milliampere-hours

(mAh) or percentage (%) over a wide range of operating

conditions. As the battery approaches the critical region

near empty, the ModelGauge m5 algorithm invokes a spe-

cial error correction mechanism that eliminates any error.

The ICs provide accurate estimation of time-to-empty and

time-to-full, Cycle+™ age forecast, and three methods

for reporting the age of the battery: reduction in capacity,

increase in battery resistance, and cycle odometer.

● Precision Measurement System

• No Calibration Required

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

● Temperature Measurement

• Die Temperature

• Up to Two External Thermistors

● Multiple Series Cell Pack Operation

● Low Quiescent Current

• MAX172x1: 18µA Active, 9µA Hibernate

• MAX172x5: 25µA Active, 12µA Hibernate

● Alert Indicator for Voltage, SOC, Temperature,

Current, and 1% SOC Change

● High-Speed Overcurrent Comparators

● Predicts Remaining Capacity Under Theoretical Load

● SHA-256 Authentication

The ICs provide precision measurements of current, voltage,

and temperature. Temperature of the battery pack is mea-

sured using an internal temperature measurement and up to

two external thermistors supported by ratiometric measure-

● Maxim 1-Wire or 2-Wire (I C) Interface

ments on auxiliary inputs. A Maxim 1-Wire (MAX17211/

● SBS 1.1 Compatible Register Set

MAX17215) or 2-wire I C (MAX17201/MAX17205) inter-

face provides access to data and control registers. The ICs

are available in lead-free, 3mm x 3mm, 14-pin TDFN and

1.6mm x 2.4mm 15-bump WLP packages.

Applications

● Smartphones and Tablets

● Portable Game Players

● e-Readers

Ordering Information appears at end of data sheet.

● Digital Still and Video Cameras

● Handheld Computers and Terminals

● Portable Medical Equipment

● Handheld Radios

ModelGauge and Cycle+ are trademarks and 1-Wire is a regis-

tered trademark of Maxim Integrated Products, Inc.

19-8424; Rev 2; 8/16

12 3 4 5 6 7...115

中文翻译

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与MAX17215相关器件

型号	品牌	获取价格	描述	数据表
MAX17215G+	MAXIM	获取价格	Power Supply Support Circuit,
MAX17215G+T	MAXIM	获取价格	Power Supply Support Circuit,
MAX1721EUT	MAXIM	获取价格	SOT23, Switched-Capacitor Voltage Inverters with Shutdown
MAX1722	MAXIM	获取价格	1.5uA IQ, Step-Up DC-DC Converters in Thin SOT23-5
MAX1722	ADI	获取价格	1.5μA IQ、升压DC-DC转换器，TSOT和μDFN封装
MAX1722_12	MAXIM	获取价格	1.5Î¼A IQ, Step-Up DC-DC Converters in Thin S
MAX1722_13	MAXIM	获取价格	1.5Î¼A IQ, Step-Up DC-DC Converters in TSOT
MAX17220	MAXIM	获取价格	400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown
MAX17220	ADI	获取价格	400mV至5.5V输入、nanoPower同步升压转换器，带真关断
MAX17220ELT	MAXIM	获取价格	400mV to 5.5V Input, nanoPower Synchronous Boost Converter with True Shutdown

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