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AccuCharge + ModelGauge 1-Cell Charger, Fuel Gauge, and Protector

Industry's Most Flexible Stand-Alone Fuel Gauge with Integrated Precision Charger and Protector

Product Details

Key Features

Parametric specs for Battery Chargers
Charging VIN (V) (max) 5.7
Max. ICHG (A) 5.6
Cell Chemistry Li-Ion
Li-Polymer
LiFePO4
# Lithium Ion Cells 1
Protected VIN (V) (max) 28
Charger (V) 3.6 to 4.8
Oper. Temp. (°C) -40 to +85
Package/Pins WLP/15
Budgetary
Price (See Notes)
2.25
Parametric specs for Multifunction PMICs
Battery Charger Features AccuCharge
Battery Charger
Charge Timer
Input Current Limit
JEITA
Thermal Regulation
Package/Pins WLP/15
View Less
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Authentication
Charger
Fuel Gauge
Protector
Battery Type 1 Cell Li-Ion
Fuel Gauge Algorithm ModelGauge m5
Interface 2-Wire
Parameters Measured Current
Internal Self-Discharge
State of Charge
Temperature
Voltage
End Equipment Host
Pack
Battery Protection Features 2-Level
Charger-Communication Timeout
Internal Self-Discharge
Over Voltage
Over-Charge
Over-Current
Over-Temperature
Over/Under Voltage
VSUPPLY (V) (min) 2.16
VSUPPLY (V) (max) 4.9
Package/Pins WLP/15
Oper. Temp. (°C) -40 to +85
View Less

Simplified Block Diagram

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Parameters

Parametric specs for Battery Chargers
Charging VIN (V) (max) 5.7
Max. ICHG (A) 5.6
Cell Chemistry Li-Ion
Li-Polymer
LiFePO4
# Lithium Ion Cells 1
Protected VIN (V) (max) 28
Charger (V) 3.6 to 4.8
Oper. Temp. (°C) -40 to +85
Package/Pins WLP/15
Budgetary
Price (See Notes)
2.25
Parametric specs for Multifunction PMICs
Battery Charger Features AccuCharge
Battery Charger
Charge Timer
Input Current Limit
JEITA
Thermal Regulation
Package/Pins WLP/15
Parametric specs for Battery Fuel Gauges, Protectors, and Monitors
Functions Authentication
Charger
Fuel Gauge
Protector
Battery Type 1 Cell Li-Ion
Fuel Gauge Algorithm ModelGauge m5
Interface 2-Wire
Parameters Measured Current
Internal Self-Discharge
State of Charge
Temperature
Voltage
End Equipment Host
Pack
Battery Protection Features 2-Level
Charger-Communication Timeout
Internal Self-Discharge
Over Voltage
Over-Charge
Over-Current
Over-Temperature
Over/Under Voltage
VSUPPLY (V) (min) 2.16
VSUPPLY (V) (max) 4.9
Package/Pins WLP/15
Oper. Temp. (°C) -40 to +85

Key Features

  • Non-Volatile Programmable Stand-Alone AccuCharge 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
      •  Temperature Region Dependent
    • Overcharge/Discharge/Short-Circuit Current 
    • Over/Under Temperature
    • 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
  • Dynamic Power—Estimates Power Capability
  • SHA-256 Authentication to Prevent Cloning
  • Precision Measurement Without Calibration
    • ​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-wire (I2C/SMBus™)
  • 1.9mm x 2.5mm 15-bump 0.5mm pitch WLP

Applications/Uses

  • Dual Screen Smartphones, Tablets
  • Handheld Radios, Computers, Accessories
  • Hearables, Wearables, Smartwatches
  • Home/Building Automation, Sensors, Cameras
  • Medical Devices, Health, Fitness Monitors
  • Parallel Battery AR/VR Systems
  • Smart Batteries and Hybrid Supercap Batteries
  • USB PPS and Direct Charging

Description

The MAX17330 is a 28μA IQ stand-alone charger, fuel 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 AccuCharge™ charger technology. The MAX17330 regulates charge voltage, current, and FET temperature. Stand-alone charging is supported by flexible configuration in nonvolatile memory. The IC supports the following applications:

  • Low-Power Charging
    • 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
  • Protection and Charging Control—pack or host side

The MAX17330 ideal diode circuit supports a quick response to system transients and adapter removal with low voltage drop across the CHG FET.

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, temperature, and discharge rate while providing accurate state-of-charge (SOC) in milliampere-hours (mAh) or percentage (%) over a wide range of operating conditions.

The IC monitors the voltage, current, temperature, and state of the battery to provide protection against over/undervoltage, overcurrent, short-circuit, over/undertemperature and overcharge conditions, and internal self-discharge protection using external high-side N-FETs to ensure that the lithium-ion/polymer battery operates under safe conditions which prolongs the life of the battery.

Simplified Block Diagram

MAX17330: Typical Application Circuit MAX17330: Typical Application Circuit Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .