bq24190 SLUSAW5 – JANUARY 2012 www.ti.com I2C Controlled 4.5A Single Cell USB/Adaptor Charger With Narrow VDC Power Path Management and USB OTG FEATURES 1 • • • • • Up to 4.5A Fast Charge Rate and 6A Discharge Rate Single Input USB-compliant Charger – 3.9V–17V Input Operating Voltage Range – Input Current Limit Supports USB2.0 and USB 3.0 – USB Host/Charging Port Detection Compatible to USB Battery Charger Spec 1.2 – Support USB OTG – Autonomous Charging with or without Host Narrow System Bus Voltage Power Path Management – Instant-on Works with No Battery or Deeply Discharged Battery – Battery Supplements System When Adapter is Fully-Loaded 1.5MHz Switching Frequency I2C Port for Optimal System Performance and Status Reporting – Input Current Limit: 100mA, 150mA, 500mA, 900mA, 1.5A, 2A and 3A – Input Voltage, Charge Voltage, Charge Current, Minimum System Voltage, etc. • • • • • • Accuracy – ±0.5% Charge Voltage Regulation – ±5% Charge Current Regulation – ±5% Input Current Regulation – ±2% Input Voltage Regulation High Integration – Power Path Management – Synchronous Switching MOSFETs – Integrated Current Sensing – Internal Loop Compensation Accelerate Charge Time by Battery Path Impedance Compensation Charge Status Outputs for LED or Host Processor Maximum Power Tracking Capability by Input Voltage Regulation 4mm x 4mm QFN-24 Package APPLICATIONS • • • Tablet PC Portable Media Players Portable Internet Devices DESCRIPTION The bq24190 is a highly-integrated switch-mode battery charge management and system power path management device for 1 cell Li-Ion and Li-polymer batteries in a wide range of tablet and other portable devices. Its 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 bq24190 supports a wide range of input sources, including standard USB host port, USB charging port, and high power DC adapter. To set the default input current limit, the bq24190 detects the input source following the USB battery charging spec 1.2. The bq24190 is compliant with USB 2.0 and USB 3.0 power spec with input current and voltage regulation. Meanwhile, the bq24190 supports USB On-the-Go operation by supplying 5V on VBUS with current limit up to 1.3A. The power path management regulates the system slightly above battery voltage but does not drop below 3.5V (programmable). With this feature, the system keeps operating even when the battery is completely depleted or removed. When the input source current or voltage limit is reached, the power path management automatically reduces the charge current to zero and then starts discharging the battery until the system power requirement is met. This supplement mode operation keeps the input source from getting overloaded. 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. PRODUCT PREVIEW information concerns products in the formative or design phase of development. Characteristic data and other specifications are design goals. Texas Instruments reserves the right to change or discontinue these products without notice. Copyright © 2012, Texas Instruments Incorporated PRODUCT PREVIEW Check for Samples: bq24190 bq24190 SLUSAW5 – JANUARY 2012 www.ti.com DESCRIPTION (CONTINUED) The bq24190 can initiate a new charging cycle without host control. It charges the battery in three phases: pre-conditioning, constant current, and constant voltage. In the end, the charger automatically terminates when the charge current is below a preset limit in the constant voltage phase. Later on, when the battery voltage falls below the recharge threshold, the charger automatically starts another charging cycle. The bq24190 provides various safety features for battery charging and system operation, including dual pack negative thermistor monitoring, charging safety timer, and over-voltage/over-voltage protections. The thermal regulation reduces charge current when the junction temperature exceeds 120°C (programmable). The STAT output reports the charging status and any fault conditions. The INT immediately notifies the host when a fault occurs. The bq24190 is available in a 24-pin, 4x4 mm2 thin QFN package. bq2419x FAMILY TABLE bq24190 bq24191 bq24192 bq24192I I2C address 6BH 6AH 6BH 6BH USB OTG Yes No Yes Yes PRODUCT PREVIEW USB Detection D+/D- PSEL PSEL PSEL Default Battery Voltage 4.2V 4.2V 4.2V 4.1V Default Charge Current 2A 2A 2A 1A Maximum Pre-Charge Current 2A 2A 2A 640mA Status Output STAT STAT, /PG STAT, /PG STAT, /PG STAT During Fault Blinking at 1Hz Blinking at 1Hz Blinking at 1Hz 10k to ground APPLICATION DIAGRAM SYS: 3.5V- 4.3V VBUS PMID USB D+ SW BTST REGN DREGN VREF PGND STAT SYS 4.2V Battery BAT Host SDA SCL INT OTG CE ILIM REGN TS1 bq24190 TS2 Thermal Pad 2 Submit Documentation Feedback Copyright © 2012, Texas Instruments Incorporated Product Folder Link(s) :bq24190 PACKAGE OPTION ADDENDUM www.ti.com 9-Mar-2012 PACKAGING INFORMATION Orderable Device Status (1) Package Type Package Drawing Pins Package Qty Eco Plan (2) Lead/ Ball Finish MSL Peak Temp (3) BQ24190RGER PREVIEW VQFN RGE 24 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ24190RGET PREVIEW VQFN RGE 24 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ24191RGER PREVIEW VQFN RGE 24 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ24191RGET PREVIEW VQFN RGE 24 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ24192RGER PREVIEW VQFN RGE 24 3000 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR BQ24192RGET PREVIEW VQFN RGE 24 250 Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEAR Samples (Requires Login) (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs. LIFEBUY: TI has announced that the device will be discontinued, and a lifetime-buy period is in effect. NRND: Not recommended for new designs. Device is in production to support existing customers, but TI does not recommend using this part in a new design. PREVIEW: Device has been announced but is not in production. Samples may or may not be available. OBSOLETE: TI has discontinued the production of the device. (2) Eco Plan - The planned eco-friendly classification: Pb-Free (RoHS), Pb-Free (RoHS Exempt), or Green (RoHS & no Sb/Br) - please check http://www.ti.com/productcontent for the latest availability information and additional product content details. TBD: The Pb-Free/Green conversion plan has not been defined. Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes. Pb-Free (RoHS Exempt): This component has a RoHS exemption for either 1) lead-based flip-chip solder bumps used between the die and package, or 2) lead-based die adhesive used between the die and leadframe. The component is otherwise considered Pb-Free (RoHS compatible) as defined above. Green (RoHS & no Sb/Br): TI defines "Green" to mean Pb-Free (RoHS compatible), and free of Bromine (Br) and Antimony (Sb) based flame retardants (Br or Sb do not exceed 0.1% by weight in homogeneous material) (3) MSL, Peak Temp. -- The Moisture Sensitivity Level rating according to the JEDEC industry standard classifications, and peak solder temperature. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided. 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