BQ25672 Series
I²C controlled, 1- to 4-cell, 3-A buck battery charger with dual-input selector and integrated ADC
Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/
Catalog
I²C controlled, 1- to 4-cell, 3-A buck battery charger with dual-input selector and integrated ADC
| Part | Battery Chemistry | Supplier Device Package | Current - Charging | Interface | Charge Current - Max [Max] | Programmable Features | Fault Protection | Voltage - Supply (Max) [Max] | Number of Cells [Max] [custom] | Number of Cells [Min] [custom] | Package / Case | Operating Temperature [Max] | Operating Temperature [Min] | Battery Pack Voltage [Max] | Mounting Type |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Texas Instruments BQ25672RQMR | Lithium Ion/Polymer | 29-VQFN-HR (4x4) | Constant | I2C | 3 A | Current, Voltage | Over Current, Over Voltage | 24 V | 4 | 1 | 29-VFQFN | 85 °C | -40 °C | 18.8 V | Surface Mount |
Key Features
• High power density, high integration buck charger for 1-4 cell batteriesIntegrates switching MOSFETs, BATFETIntegrates input and charging current sensingHighly efficient750-kHz or 1.5-MHz switching frequencies3-A charging current with 10-mA resolution96.5% efficient: 16-V battery at 3A from 20VSupports a wide range of input sourcesAutonomously sampled open circuit voltage (V OC) maximum power point tracking (MPPT) for charging from a photovoltaic panel3.6-V to 24-V wide input operating voltage range with 30-V absolute maximum ratingMaximum power tracking with input voltage dynamic power management (VINDPM) up to 22 V and input current dynamic power management (IINDPM) up to 3.3 ADetects USB BC1.2, HVDCP and non-standard adaptersDual-input power mux controller (optional) for source selectionNarrow voltage DC (NVDC) power pathPowers USB port from battery (USB OTG)5-V to 12-V OTG buck-boost output voltage with 10-mV resolutionOTG output current regulation up to 2 A with 40-mA resolutionFlexible autonomous and I 2C mode for optimal system performanceIntegrated 16-bit ADC for voltage, current, and temperature monitoringLow battery quiescent current17 µA for battery only operation500 nA in Charger Shutdown ModeHigh accuracy-0.25% to +0.65% charge voltage regulation for 2S batteries±5% charge current regulation±5% input current regulationSafetyThermal regulation and thermal shutdownInput/battery OVP and OCPConverter MOSFETs OCPCharging safety timerPackage29-Pin 4 mm × 4 mm QFNHigh power density, high integration buck charger for 1-4 cell batteriesIntegrates switching MOSFETs, BATFETIntegrates input and charging current sensingHighly efficient750-kHz or 1.5-MHz switching frequencies3-A charging current with 10-mA resolution96.5% efficient: 16-V battery at 3A from 20VSupports a wide range of input sourcesAutonomously sampled open circuit voltage (V OC) maximum power point tracking (MPPT) for charging from a photovoltaic panel3.6-V to 24-V wide input operating voltage range with 30-V absolute maximum ratingMaximum power tracking with input voltage dynamic power management (VINDPM) up to 22 V and input current dynamic power management (IINDPM) up to 3.3 ADetects USB BC1.2, HVDCP and non-standard adaptersDual-input power mux controller (optional) for source selectionNarrow voltage DC (NVDC) power pathPowers USB port from battery (USB OTG)5-V to 12-V OTG buck-boost output voltage with 10-mV resolutionOTG output current regulation up to 2 A with 40-mA resolutionFlexible autonomous and I 2C mode for optimal system performanceIntegrated 16-bit ADC for voltage, current, and temperature monitoringLow battery quiescent current17 µA for battery only operation500 nA in Charger Shutdown ModeHigh accuracy-0.25% to +0.65% charge voltage regulation for 2S batteries±5% charge current regulation±5% input current regulationSafetyThermal regulation and thermal shutdownInput/battery OVP and OCPConverter MOSFETs OCPCharging safety timerPackage29-Pin 4 mm × 4 mm QFN
Description
AI
The BQ25672 is a fully integrated switch-mode buck charger for 1-4 cell Li-ion batteries and Li-polymer batteries. The BQ25672 is also capable of producing a buck-boost, 5 V to 12 V, output voltage on VBUS when operating in OTG Mode. The integration includes the switching MOSFETs, input and charging current sensing circuits, the battery FET and all the loop compensation of the converter. It uses NVDC power path management, regulating the system not dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source. also maximizes power from photovoltaic panels using its built-in V OC scaling MPPT algorithm.
The BQ25672 is a fully integrated switch-mode buck charger for 1-4 cell Li-ion batteries and Li-polymer batteries. The BQ25672 is also capable of producing a buck-boost, 5 V to 12 V, output voltage on VBUS when operating in OTG Mode. The integration includes the switching MOSFETs, input and charging current sensing circuits, the battery FET and all the loop compensation of the converter. It uses NVDC power path management, regulating the system not dropping below a configurable minimum system voltage. When system power exceeds the input source rating, battery supplement mode supports the system without overloading the input source. also maximizes power from photovoltaic panels using its built-in V OC scaling MPPT algorithm.