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MAX17201 Datasheet(PDF) 1 Page - Maxim Integrated Products |
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MAX17201 Datasheet(HTML) 1 Page - Maxim Integrated Products |
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1 / 115 page  General Description 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. 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. 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. 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- ments on auxiliary inputs. A Maxim 1-Wire® (MAX17211/ MAX17215) or 2-wire I2C (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 ● Digital Still and Video Cameras ● Handheld Computers and Terminals ● Portable Medical Equipment ● Handheld Radios Benefits and Features ● 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 ● Nonvolatile Memory for Stand-Alone Operation • Learned Parameters and History Logging • Up to 75 Words Available for User Data ● 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 ● Maxim 1-Wire or 2-Wire (I2C) Interface ● SBS 1.1 Compatible Register Set Ordering Information appears at end of data sheet. ModelGauge and Cycle+ are trademarks and 1-Wire is a regis- tered trademark of Maxim Integrated Products, Inc. 19-8424; Rev 2; 8/16 MAX17201/MAX17205/ MAX17211/MAX17215 Stand-Alone ModelGauge m5 Fuel Gauge with SHA-256 Authentication EVALUATION KIT AVAILABLE |
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