General Description
The MAX17332 is a 35μA 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 IC regulates charging
by modulating the charge N-FET, using AccuCharge™
charger technology. The IC 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 IC 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 voltagebased
fuel gauge to provide industry-leading accuracy.
The IC automatically compensates for cell aging, temperature,
and discharge rate while providing accurate state-ofcharge
(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.

Benefits and Features
● Non-Volatile Programmable Stand-Alone Charger
• 1% Charge Current, 256 Current Settings
• 0.25% Charge Voltage, 2.42V to 4.8V, Configurable
• Optional Manual Charge Control
• FET Temperature Limit and Heat Regulation
• Prequal, SmartFull, and Step-Charging Options
• JEITA—9 Temperature Regions
● Battery Health + Programmable Safety/Protection
• Overvoltage/Overcharge Current
• Temperature Region Dependent
• Overcharge/Discharge/Short-Circuit Current
• Over/Under Temperature
• Zero-Volt or >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 + Age-Scheduled Charging
● 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: 35μA Active, 21μA Hibernate
• FETs Disabled: 8μA Ship, 0.5μA Shutdown
● 2-Wire (I2C) and 1-Wire®
● 1.9 mm x 2.5 mm 15-Bump 0.5mm Pitch Wafer-Level Package (WLP)

Applications
• USB PPS and Direct Charging • 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