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BQ25890 Datasheet(PDF) 1 Page - Texas Instruments |
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BQ25890 Datasheet(HTML) 1 Page - Texas Instruments |
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1 / 69 page  SYS BAT bq2589x Host Input 3.9V±14V at 3A USB OTG 5V at 2.4A Ichg = 5A SYS 3.5V±4.5V I2C Bus Host Control VBUS SW TS QON Optional REGN Product Folder Sample & Buy Technical Documents Tools & Software Support & Community An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. bq25890, bq25892 SLUSC86B – MARCH 2015 – REVISED MAY 2016 bq25890/2 I2C Controlled Single Cell 5-A Fast Charger with MaxChargeTM Technology for High Input Voltage and Adjustable Voltage USB On-the-Go Boost Mode 1 1 Features 1 • High Efficiency 5-A, 1.5-MHz Switch Mode Buck Charge – 93% Charge Efficiency at 2 A and 91% Charge Efficiency at 3-A Charge Current – Optimize for High Voltage Input (9 V to 12 V) – Low Power PFM mode for Light-Load Operations • USB On-the-Go (OTG) with Adjustable Output from 4.5 V to 5.5 V – Selectable 500-kHz and 1.5-MHz Boost Converter with up-to 2.4-A Output – 93% Boost Efficiency at 5 V at 1-A Output – Accurate Hiccup Mode Overcurent Protection • Single Input to Support USB Input and Adjustable High Voltage Adapters – Support 3.9-V to 14-V Input Voltage Range – Input Current Limit (100 mA to 3.25 A with 50- mA resolution) to Support USB2.0, USB3.0 Standard and High Voltage Adapters – Maximum Power Tracking by Input Voltage Limit up-to 14 V for Wide Range of Adapters – Auto Detect USB SDP, CDP, DCP, and Non- Standard Adapters (bq25890) • Input Current Optimizer (ICO) to Maximize Input Power without Overloading Adapters • Resistance Compensation (IRCOMP) from Charger Output to Cell Terminal • Highest Battery Discharge Efficiency with 11-m Ω Battery Discharge MOSFET up to 9 A • Integrated ADC for System Monitor (Voltage, Temperature, Charge Current) • Narrow VDC (NVDC) Power Path Management – Instant-On Works with No Battery or Deeply Discharged Battery – Ideal Diode Operation in Battery Supplement Mode • BATFET Control to Support Ship Mode, Wake Up, and Full System Reset • Flexible Autonomous and I2C Mode for Optimal System Performance • High Integration includes all MOSFETs, Current Sensing and Loop Compensation • 12-µA Low Battery Leakage Current to Support Ship Mode • High Accuracy – ±0.5% Charge Voltage Regulation – ±5% Charge Current Regulation – ±7.5% Input Current Regulation • Safety – Battery Temperature Sensing for Charge and Boost Mode – Thermal Regulation and Thermal Shutdown 2 Applications • Smart Phone • Tablet PC • Portable Internet Devices 3 Description The bq25890, bq25892 are 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. Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) bq25890 WQFN (24) 4.00mm x 4.00mm bq25892 (1) For all available packages, see the orderable addendum at the end of the datasheet. Simplified Schematic |
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