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Maxim Integrated Semiconductor Electronic Components Datasheet

MAX17302 Datasheet

1-Cell ModelGauge m5 EZ Fuel Gauge

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MAX17301–MAX17303/
MAX17311–MAX17313
EVALUATION KIT AVAILABLE
1-Cell ModelGauge m5 EZ Fuel Gauge with
Protector and SHA-256 Authentication
General Description
The MAX17301–MAX17303/MAX17311–MAX17313 is a
24μA IQ stand-alone pack-side fuel gauge IC with protec-
tor and optional SHA-256 authentication for 1-cell lithium-
ion/polymer batteries.
The IC monitors the voltage, current, temperature, and
state of the battery to provide against over/undervoltage,
overcurrent, short-circuit, over/undertemperature and
overcharge conditions protection using external high-side
N-FETs, and provides charging prescription to ensure that
the lithium-ion/polymer battery operates under safe condi-
tions prolonging the life of the battery.
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.
The fuel gauge uses ModelGauge m5 algorithm that com-
bines 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 aging, temper-
ature, and discharge rate, and provides accurate state-of-
charge (SOC) in milliampere-hours (mAh) or percentage
(%) over a wide range of operating 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.
A Maxim 1-Wire® or 2-wire I2C interface provides access
to data and control registers. The IC is available in a
lead-free, 3mm x 3mm 14-pin TDFN and 1.7mm x 2.5mm
15-bump 0.5mm pitch WLP packages.
Applications
● Smartphones, Tablets, and 2-in-1 Laptops
● Smartwatches and Wearables
● Medical Devices, Health and Fitness Monitors
● Digital Still, Video, and Action Cameras
● Handheld Computers and Terminals
● Handheld Radios
● Home and Building Automation, Sensors
● Smart Batteries
Benefits and Features
● Battery Health + Programmable Safety/Protection
• Overvoltage (Temperature Dependent)
• Overcharge Current
• Over/Undertemperature
• Ideal Diode Discharge During Charge Fault
• Charging Prescriptions (JEITA)
• Zero-Volt Charging Option
• Undervoltage + SmartEmpty
• Overdischarge/Short-Circuit
● Nonvolatile Memory for Stand-Alone Operation
• History Logging, User Data (122 Bytes)
● Low Quiescent Current
• FETs Enabled: 24µA Active, 18µA Hibernate
• FETs Disabled: 7µA Ship, 0.5µA DeepShip,
0.1µA UV-Shutdown
● Pushbutton Wakeup—Eliminates System
Consumption Until Button Press
● ModelGauge m5 EZ Algorithm
• Percent, Capacity,Time-to-Empty/Full, Age
• Cycle+™ Age Forecast
● Dynamic Power—Estimates Power Capability
● Precision Measurement Without Calibration
• Current, Voltage, Power, Time, Cycles
• Die Temperature/Thermistor
Ordering Information appears at end of datasheet.
Simple Fuel Gauge with Protector Circuit Diagram
BATTERY PACK
SYSTEM
PK+
CP
CHG
DIS
10Ω 0.1µF
ZVC
BATT
0.1µF
MAX1730x
MAX1731x
OPTIONAL PFAIL
PCKP
OPTIONAL (MAX173x1 ONLY)
NTC THERMISTOR
TH
REG
ALRT/PIO
SDA/DQ
SCL/OD
(WLP)
(TDFN)
GND CSP EP
CSN
Secondary
Protector
0.47µF
SENSE
RESISTOR
1kΩ
0.1µF
HOST
µP
PK-
ModelGauge and Cycle+ are trademarks of Maxim Integrated Products, Inc.
1-Wire is a registered trademark of Maxim Integrated Products, Inc.
19-100463; Rev 3; 5/19


Maxim Integrated Semiconductor Electronic Components Datasheet

MAX17302 Datasheet

1-Cell ModelGauge m5 EZ Fuel Gauge

No Preview Available !

MAX17301–MAX17303/
MAX17311–MAX17313
1-Cell ModelGauge m5 EZ Fuel Gauge with
Protector and SHA-256 Authentication
TABLE OF CONTENTS
General Description. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Benefits and Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Simple Fuel Gauge with Protector Circuit Diagram. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Absolute Maximum Ratings. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Package Information . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
14 TDFN-EP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
15 WLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
Electrical Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
Typical Operating Characteristics . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 21
Pin Configurations . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
WLP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23
TDFN . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Pin Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 24
Functional Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Detailed Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
General Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 27
Protector . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 28
Protector Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Voltage Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33
Ideal Diode Behavior . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
Current Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35
Overcurrent Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 36
Fast Overcurrent Comparators . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Overcurrent Comparator Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Slow Overcurrent Protection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Temperature Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Other Thresholds . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Disabling FETs by Pin-Control or I2C Command. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Charging Prescription . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 38
Step Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
Zero-Volt Charging . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 39
ModelGauge m5 Algorithm . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 41
Wakeup/Shutdown . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Modes of Operation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43
Power Mode Transition State Diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
Pushbutton Wakeup . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 46
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Part Number MAX17302
Description 1-Cell ModelGauge m5 EZ Fuel Gauge
Maker Maxim Integrated
Total Page 30 Pages
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MAX17302 Datasheet PDF

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