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Maxim MAX17330X22 Stand-Alone Fuel Gauge With Integrated Precision Charger And Protector

Product Description Of MAX17330X22

MAX17330X22 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 MAX17330X22 regulates charging by modulating the charge N-FET, using AccuCharge™ charger technology. The MAX17330X22 regulates charge voltage, current, and FET temperature. Stand-alone charging is supported by flexible configuration in nonvolatile memory. 

The MAX17330X22 supports the following:

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 MAX17330X22 ideal diode circuit supports a quick response to system transients and adapter removal with low voltage drop across the CHG FET.

The MAX17330X22 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 MAX17330X22 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 MAX17330X22 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.

Specifications Of MAX17330X22

Product:Fuel Gauges

Battery Type:Lithium-ion, Lithium Polymer

Output Voltage:1.8 V

Operating Supply Voltage:2.16 V to 4.9 V

Maximum Operating Temperature:+ 85 C

Minimum Operating Temperature:- 40 C

Operating Supply Current:52 uA

Feature Of MAX17330X22

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 Of MAX17330X22

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