MAX17335中文资料AccuCharge + ModelGauge m5 EZ 1-Cell Charger, Fuel Gauge, and Protector数据手册ADI规格书

描述 Description

The MAX17335 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.

特性 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)

应用 Application

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