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BQ25895M Series

I2C 1cell 5A buck battery charger with 3.1-A boost and HVDCP

Manufacturer: Texas Instruments
Link to Manufacturer Page: https://www.ti.com/

Catalog

I2C 1cell 5A buck battery charger with 3.1-A boost and HVDCP

PartSupplier Device PackageVoltage - Supply (Max) [Max]Charge Current - Max [Max]Mounting TypeFault ProtectionNumber of CellsInterfacePackage / CaseBattery ChemistryOperating Temperature [Max]Operating Temperature [Min]
Texas Instruments
BQ25895MRTWR
24-WQFN (4x4)
14 V
5 A
Surface Mount
Over Temperature
1
I2C, USB
24-WFQFN Exposed Pad
Lithium Ion/Polymer
85 °C
-40 °C
Texas Instruments
BQ25895MRTWT
24-WQFN (4x4)
14 V
5 A
Surface Mount
Over Temperature
1
I2C, USB
24-WFQFN Exposed Pad
Lithium Ion/Polymer
85 °C
-40 °C

Key Features

High efficiency 1.5-MHz switch mode buck charge93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge currentOptimize for high voltage input (9 V / 12 V)Low power PFM mode for light load operationsBoost mode operation with adjustable output from 4.5 V to 5.5 VSelectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output93% Boost efficiency at 5 V at 1 A outputSupport down-to 2.5V batterySupport PWM only or PFM/PWM control for light load efficiencyIntegrated control to switch between charge and boost modeSingle input to support USB input and adjustable high voltage adaptersSupport 3.9-V to 14-V input voltage rangeInput current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adaptersMaximum power tracking by input voltage limit up-to 14V for wide range of adaptersAuto detect USB SDP, CDP, DCP, and non-standard adaptersInput current optimizer (ICO) to maximize input power without overloading adaptersResistance compensation (IRCOMP) from charger output to cell terminalHighest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 AIntegrated ADC for system monitor (voltage, temperature, charge current)BATFET Control to support ship mode, wake up, and full system resetFlexible autonomous and I2C mode for optimal system performanceHigh integration includes all MOSFETs, current sensing and loop compensation12-µA Low battery leakage current to support ship modeHigh accuracy±0.5% Charge voltage regulation±5% Charge current regulation±7.5% Input current regulationSafetyBattery temperature sensing for charge and boost modeThermal regulation and thermal shutdownHigh efficiency 1.5-MHz switch mode buck charge93% charge efficiency at 2 A and 91% charge efficiency at 3 A charge currentOptimize for high voltage input (9 V / 12 V)Low power PFM mode for light load operationsBoost mode operation with adjustable output from 4.5 V to 5.5 VSelectable 500-KHz / 1.5-MHz boost converter with up-to 3.1 A output93% Boost efficiency at 5 V at 1 A outputSupport down-to 2.5V batterySupport PWM only or PFM/PWM control for light load efficiencyIntegrated control to switch between charge and boost modeSingle input to support USB input and adjustable high voltage adaptersSupport 3.9-V to 14-V input voltage rangeInput current limit (100 mA to 3.25 A with 50-mA resolution) to support USB2.0, USB3.0 standard and high voltage adaptersMaximum power tracking by input voltage limit up-to 14V for wide range of adaptersAuto detect USB SDP, CDP, DCP, and non-standard adaptersInput current optimizer (ICO) to maximize input power without overloading adaptersResistance compensation (IRCOMP) from charger output to cell terminalHighest battery discharge efficiency with 11-mΩ battery discharge MOSFET up to 9 AIntegrated ADC for system monitor (voltage, temperature, charge current)BATFET Control to support ship mode, wake up, and full system resetFlexible autonomous and I2C mode for optimal system performanceHigh integration includes all MOSFETs, current sensing and loop compensation12-µA Low battery leakage current to support ship modeHigh accuracy±0.5% Charge voltage regulation±5% Charge current regulation±7.5% Input current regulationSafetyBattery temperature sensing for charge and boost modeThermal regulation and thermal shutdown

Description

AI
The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution. The BQ25895M is a highly-integrated 5-A switch-mode battery charge management and system power path management device for single cell Li-Ion and Li-polymer battery. The devices support high input voltage fast charging. The low impedance power path optimizes switch-mode operation efficiency, reduces battery charging time and extends battery life during discharging phase. The I2C Serial interface with charging and system settings makes the device a truly flexible solution.