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特性
- 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
- Overvoltage/Overcharge Current
- 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)
产品详情和应用
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.
APPLICATION
