MAX17302
1-Cell ModelGauge m5 EZ Fuel Gauge with Protector and SHA-256 Authentication
Industry's Lowest IQ Stand-Alone Fuel Gauge with Protector
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Key Features
Applications/Uses
| Functions | Fuel Gauge Protector |
| Battery Type | 1 Cell Li-Ion |
| Fuel Gauge Algorithm | ModelGauge m5 |
| Interface | 2-Wire |
| User Data Storage (Bytes) | 122 NVM |
| Parameters Measured | Current State of Charge Temperature Time Voltage |
| End Equipment | Pack |
| Battery Protection Features | Charger-Communication Timeout Over Voltage Over-Charge Over-Current Over-Temperature Over/Under Voltage |
| VSUPPLY (V) (min) | 2.3 |
| VSUPPLY (V) (max) | 4.9 |
| Package/Pins | TDFN-CU/14 WLP/15 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 2.17 |
Simplified Block Diagram
Technical Docs
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Parameters
| Functions | Fuel Gauge Protector |
| Battery Type | 1 Cell Li-Ion |
| Fuel Gauge Algorithm | ModelGauge m5 |
| Interface | 2-Wire |
| User Data Storage (Bytes) | 122 NVM |
| Parameters Measured | Current State of Charge Temperature Time Voltage |
| End Equipment | Pack |
| Battery Protection Features | Charger-Communication Timeout Over Voltage Over-Charge Over-Current Over-Temperature Over/Under Voltage |
| VSUPPLY (V) (min) | 2.3 |
| VSUPPLY (V) (max) | 4.9 |
| Package/Pins | TDFN-CU/14 WLP/15 |
| Oper. Temp. (°C) | -40 to +85 |
| Budgetary Price (See Notes) | 2.17 |
Key Features
- Battery Health + Programmable Safety/Protection
- Overvoltage (Temperature Dependent)
- Overcharge Current
- Over/Undertemperature
- Battery Internal Self-Discharge Detection (MAX17300/10 Only)
- 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: 5µA Ship, 0.5µA/0.02µA DeepShip
- Parallel Battery Management (MAX17300/10 Only)
- 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
Applications/Uses
- 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
Description
The MAX17300–MAX17303/MAX17310–MAX17313 is a 24μA IQ stand-alone pack-side fuel gauge IC with protector 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 conditions 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 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 aging, temperature, 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.
Simplified Block Diagram
MAX17301, MAX17302, MAX17303, MAX17311, MAX17312, MAX17313: Functional Diagram
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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