MAX17332
AccuCharge + ModelGauge m5 EZ 1-Cell Charger, Fuel Gauge, and Protector
AccuCharge + ModelGauge m5 EZ 1-Cell Charger, Fuel Gauge, and Protector
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Overview
Features and Benefits
- 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)
Product Details
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 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.
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
Product Categories
Markets and Technologies
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Part#
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Fuel Gauge Algorithm
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Battery Management Features
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ModelGauge m5
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Fuel Gauge
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ModelGauge m5
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AccuCharge, I2C Communication, Integrated Fuel Gauge, JEITA Compliant, OVP, Push-Button Wakeup, Ship Mode, Stand Alone, Thermistor Input, Timer, USB Input
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Product Lifecycle
Recommended for New Designs
This product has been released to the market. The data sheet contains all final specifications and operating conditions. For new designs, ADI recommends utilization of these products.
Evaluation Kits (1)
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Evaluation Boards
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Pricing displayed is based on 1-piece. The USA list pricing shown is for budgetary use only, shown in United States dollars (FOB USA per unit), and is subject to change. International prices may vary due to local duties, taxes, fees and exchange rates.