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AccuCharge + ModelGauge m5 EZ 1-Cell
Charger, Fuel Gauge, and Protector
MAX17330
General Description
Benefits and Features
The MAX17330 is a 28μA I stand-alone charger, fuel
● Non-Volatile Programmable Stand-Alone AccuCharge
Q
gauge, protector, and battery internal self-discharge
detection IC for 1-cell lithium-ion/polymer batteries. When
a voltage source is present, the MAX17330 regulates
charging by modulating the charge N-FET, using Ac-
cuCharge™ charger technology. The MAX17330 regu-
lates charge voltage, current, and FET temperature.
Stand-alone charging is supported by flexible configura-
tion in nonvolatile memory. The IC supports the following:
Charger
• 0.2% Charge Voltage 3.6V to 4.8V, Configurable
• 1% Charge Current, 256 Current Settings
• FET Temperature Limit and Heat Regulation
• Prequal and Step-Charging Options
• JEITA—6 Temperature Regions
● Battery Health + Programmable Safety/Protection
• Overvoltage/Overcharge-Current
● Low-Power Charging
• Temperature Region Dependent
• Overcharge/Discharge/Short-Circuit Current
• Over/Under Temperature
• 1mA to 500mA directly from universal 5V USB
• No USB identification/coordination needed
● High-Power Parallel Packs (>1000mA)
• Independently charges parallel packs
• Prevents cross-charging for parallel batteries
• Coordinates external DC-DC with alerts
• Minimizes dropout and heat
• Zero-Volt or Greater than 1.8V Charging Option
• Undervoltage + SmartEmpty
● Pushbutton Wakeup/Factory Ship Mode (0.5μA)
● ModelGauge m5 EZ Algorithm
• Percent, Capacity, Time-to-Empty/Full, Age
• Cycle+™ Age Forecast
● Protection and Charging Control—pack or host side
The MAX17330 ideal diode circuit supports a quick re-
sponse to system transients and adapter removal with low
voltage drop across the CHG FET.
● Dynamic Power—Estimates Power Capability
● SHA-256 Authentication to Prevent Cloning
● Precision Measurement Without Calibration
The IC uses the ModelGauge™ m5 EZ 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 accuracy.
The IC automatically compensates for cell aging, tempera-
ture, and discharge rate while providing accurate state-of-
charge (SOC) in milliampere-hours (mAh) or percentage
(%) over a wide range of operating conditions.
• Current, Voltage, Power, Time, Cycles
• Die Temperature and two Thermistors
● History Logging, User Data
● Low Quiescent Current
• FETs Enabled: 28µA Active, 21µA Hibernate
• FETs Disabled: 8µA Ship, 0.5µA/0.1µA Shutdown
2
● 2-wire (I C/SMBus™)
● 1.9mm x 2.5mm 15-bump 0.5mm pitch WLP
The IC monitors the voltage, current, temperature, and
state of the battery to provide protection against over/un-
dervoltage, overcurrent, short-circuit, over/undertemper-
ature and overcharge conditions, and internal self-dis-
charge protection using external high-side N-FETs to en-
sure that the lithium-ion/polymer battery operates under
safe conditions which prolongs the life of the battery.
Simple Charger, Fuel Gauge with
Protector Diagram
CHARGE
SYSTEM
SOURCE
MAX17330 CHARGER
PROTECTOR
MAX17330 CHARGER
PROTECTOR
Applications
● USB PPS and Direct Charging
FUEL GAUGE
FUEL GAUGE
PARALLEL BATTERY
● Smart Batteries and Hybrid Supercap Batteries
● Dual Screen Smartphones, Tablets
● Hearables, Wearables, Smartwatches
● Medical Devices, Health, Fitness Monitors
● Handheld Radios, Computers, Accessories
● Home/Building Automation, Sensors, Cameras
● Parallel Battery AR/VR Systems
Ordering Information appears at end of data sheet.
ModelGauge, AccuCharge, and Cycle+ are trademarks of Maxim
Integrated Products, Inc.
19-100962; Rev 1; 4/23
SMBus is a trademark of Intel Corp.
© 2023 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners.
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