Details, datasheet, quote on part number: BQ24078RGTT
PartBQ24078RGTT
CategorySemiconductors => Power Management => Battery Management Products => Battery Charger IC
Part familyBQ24078 1.5A Linear Charger with Powerpath Management
TitleBattery Management LI-ION BATTERY CHARGER AND POWER-PATH
Description1.5A Linear Charger with Powerpath Management 16-VQFN -40 to 85
CompanyTexas Instruments Inc.
StatusPREVIEW
ROHSY
SampleNo
DatasheetDownload BQ24078RGTT datasheet
Specifications 
Operating Vin(Max)(V)6.4
Operating Vin(Min)(V)4.35
Package GroupVQFN
Cell ChemistryLi-Ion/Li-Polymer
Battery Charge Voltage(Max)(V)4.35
Control InterfaceStandalone (RC-Settable)
Absolute Vin (safety rating)(Max)((V))28
Battery Charge Voltage(Min)(V)4.35
Charge Current(Max)(A)1.5
Control TopologyLinear
Number of Series Cells1
FeaturesPower Path, Temp Monitoring (Thermistor Pin), Vin DPM (OK for Solar Power Source)
  Mecanical Data
Pin nbPackage typeInd stdJEDEC codePackage qtyCarrierDevice markWidth (mm)Length (mm)Thick (mm)Pitch (mm)
16RGTVQFNS-PQFP-N250SMALL T&RB24078 33.9.5
Application notes
• Selecting the Best bq2407x/23x Single Cell Battery Charger for your Application | Doc
Evaluation Kits
BQ24078EVM-015: bq24078 1.5A Single-Chip Li-Ion and Li-Polymer Charger Management IC Evaluation Module

Others parts numbering
BQ24076RGTT
BQ24076EVM-015: Power Management IC Development Tools BQ24076EVM-015
BQ24078EVM-015: Power Management IC Development Tools BQ24078EVM-015
BQ24078RGTR
BQ24076RGTR

 

Features, Applications

bq2407x 1.5-A High Battery Voltage Li-Ion Battery Chargers with Power-Path Management IC

The is a family of integrated Li-Ion battery linear chargers with system power path management functionality targeted at space-constrained portable applications. The devices operate from either a USB port an AC adapter and support charge currents 1.5 A. The input voltage range with input overvoltage protection supports unregulated adapters. The USB input current limit accuracy and start up sequence allow the bq2407x to meet USB-IF inrush current specifications. Additionally, the input dynamic power management (VIN-DPM) prevents system crashes because of incorrectly configured USB sources and maximizes the power available from the adapter. The bq2407x features dynamic power path management (DPPM) that powers the system while simultaneously and independently charging the battery. The DPPM circuit reduces the charge current when the input current limit causes the system output to fall to the DPPM threshold; thus, supplying the system load at all times while monitoring the charge current separately. This feature reduces the number of charge and discharge cycles on the battery, allows for proper charge termination and enables the system to run with a defective or absent battery pack. Device Information(1)

PART NUMBER bq24076 bq24078 PACKAGE VQFN (16) BODY SIZE (NOM) 3.00 mm

Fully Compliant USB Charger Selectable 100-mA and 500-mA Maximum Input Current 100-mA Maximum Current Limit Ensures Compliance to USB-IF Standard Input-Based Dynamic Power Management (VIN-DPM) for Protection Against Poor USB Sources 28-V Input Rating with Overvoltage Protection Integrated Dynamic Power Path Management (DPPM) Function Simultaneously and Independently Powers the System and Charges the Battery Supports to 1.5-A Charge Current with Current Monitoring Output (ISET) Programmable Input Current Limit 1.5 A for Wall Adapters System Output Tracks Battery Voltage Battery Disconnect Function with SYSOFF Input Programmable Pre-Charge and Fast-Charge Safety Timers Reverse Current, Short-Circuit, and Thermal Protection NTC Thermistor Input Proprietary Start-up Sequence Limits Inrush Current Battery Charge Voltage, VBAT: 4.4 V (typ) 4.35 V (typ) Status Indication Charging/Done, Power Good

(1) For all available packages, see the orderable addendum at the end of the data sheet.

Smart Phones Portable Media Players Portable Navigation Devices Low-Power Handheld Devices Portable Gaming Headsets Wearables Home Automation Portable Medical

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.

Features.................................................................. Applications........................................................... Description............................................................. Revision History..................................................... Description (continued)......................................... Device Comparison Table..................................... Pin Configuration and Functions......................... Specifications.........................................................

Absolute Maximum Ratings..................................... ESD Ratings.............................................................. Recommended Operating Conditions....................... Thermal Information.................................................. Dissipation Ratings................................................... Electrical Characteristics........................................... Typical Characteristics..............................................

12.1 Layout Guidelines................................................. 31 12.2 Layout Example.................................................... 32 12.3 Thermal Considerations........................................ 33

Device Support...................................................... Related Links........................................................ Receiving Notification of Documentation Updates Community Resources.......................................... Trademarks........................................................... Electrostatic Discharge Caution............................ Glossary................................................................

9.1 Overview................................................................. 11 9.2 Functional Block Diagram....................................... 12 9.3 Feature Description................................................. 13

Changes from Original (October 2017) to Revision A Page

Changed IIN Test Conditions From: = 85C To: 85C in the Electrical Characteristics table..................................... 7

Submit Documentation Feedback Product Folder Links: bq24076 bq24078

Additionally, the regulated system input enables instant system turn-on when plugged in even with a totally discharged battery. The power-path management architecture also lets the battery supplement the system current requirements when the adapter cannot deliver the peak system currents, thus enabling the use of a smaller adapter. The battery is charged in three phases: conditioning, constant current, and constant voltage. In all charge phases, an internal control loop monitors the IC junction temperature and reduces the charge current if the internal temperature threshold is exceeded. The charger power stage and charge current sense functions are fully integrated. The charger function has high accuracy current and voltage regulation loops, charge status display, and charge termination. The input current limit and charge current are programmable using external resistors.

VDPPM VO(REG) 100 mV VO(REG) 100 mV VO(REG) 4.3 V VBAT +100 mV VBAT 4.3 V

For all available packages, see the orderable addendum at the end of the data sheet This product is RoHS compatible, including a lead concentration that does not exceed 0.1% of total product weight, and is suitable for use in specified lead-free soldering processes. In addition, this product uses package materials that do not contain halogens, including bromine (Br) or antimony (Sb) above 0.1% of total product weight.


 

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