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BQ24032A Status: ACTIVE

Dual Input Li-Ion Charger with Dynamic Power Path, Output regulated to 4.4V, Vbat 4.2V


      
         
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 BQ24030 BQ24031 BQ24032ABQ24035 BQ24038 
# Series Cells1  1  1  1  1  
Charge Current(Max)(A)1.5  1.5  1.5  1.5  1.5  
Charge Status Outputs2  2  2  2  2  
Control TopologyLinear  Linear  Linear  Linear  Linear  
Primary Charge Termination MethodMinimum Current  Minimum Current  Minimum Current  Minimum Current  Minimum Current  
Pin/Package20QFN  20QFN  20QFN  20QFN  20QFN  
Vin(Max)(V)18  18  18  18  18  
Battery Charge Voltage(V)4.2  4.1  4.2  4.2  4.36  
Optional FunctionsVout Regulated to 6V  Vout Regulated to 6V  Vout Regulated to 4.4V  Vout cutoff at 6V  Vout Regulated to 4.4V  
 SamplesSamplesSamplesSamplesSamples
 InventoryInventoryInventoryInventoryInventory

Customers Who Evaluated This Product Also Evaluated

  • BQ24070: Li-Ion Charger with Dynamic Power-Path Management, Output regulated to 4.4V
  • BQ24072: USB-Friendly Li-Ion Battery Charger and Power-Path Management IC, Vout 200mV above Vbat
  • BQ24038: Dual Input Li-Ion Charger with Dynamic Power Path, Output regulated to 4.4V, Vbat 4.4V
  • TL431A: Adjustable Precision Shunt Regulator
  • TPS2051B: Single, Current-Limited, Power-Distribution Switch
  • TL431: Adjustable Precision Shunt Regulator

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Product Information

Features

  • Small 3,5 mm × 4,5 mm QFN Package
  • Designed for Single-Cell Li-Ion- or Li-Polymer-Based Portable Applications
  • Integrated Dynamic Power-Path Management (DPPM) Feature Allowing the AC Adapter or the USB Port to Simultaneously Power the System and Charge the Battery
  • Power Supplement Mode Allows Battery to Supplement the USB or AC Input Current
  • Autonomous Power Source Selection (AC Adapter or USB)
  • Integrated USB Charge Control With Selectable 100-mA and 500-mA Maximum Input Current Regulation Limits
  • Dynamic Total Current Management
    for USB
  • Supports Up to 2-A Total Current
  • 3.3-V Integrated LDO Output
  • Thermal Regulation for Charge Control
  • Charge Status Outputs for LED or System Interface Indicates Charge and Fault Conditions
  • Reverse Current, Short-Circuit, and Thermal Protection
  • Power Good (AC Adapter and USB Port Present) Status Outputs
  • Charge Voltage Options: 4.1V, 4.2V, or 4.36V
  • APPLICATIONS
    • Smart Phones and PDA
    • MP3 Players
    • Digital Cameras Handheld Devices
    • Internet Appliances

Description

The bqTINY III-series of devices are highly integrated Li-ion linear chargers and system power-path management devices targeted at space-limited portable applications. The bqTINY III-series offer integrated USB-port and DC supply (AC adapter), power-path management with autonomous power-source selection, power FETs and current sensors, high accuracy current and voltage regulation, charge status, and charge termination, in a single monolithic device.

The bqTINY III-series powers the system while independently charging the battery. This feature reduces the charge and discharge cycles on the battery, allows for proper charge termination and allows the system to run with an absent or defective battery pack. This feature also allows for the system to instantaneously turn on from an external power source in the case of a deeply discharged battery pack. The IC design is focused on supplying continuous power to the system when available from the AC, USB, or battery sources.

The power select pin, PSEL, defines which input source is to be used first (primary source – AC or USB). If the primary source is not available, then the IC automatically switches over to the other secondary source if available or the battery as the last option. If the PSEL is set low, the USB input is selected first and if not available, the AC line is selected (if available) but programmed to a USB input limiting rate (100 mA/500 mA max). This feature allows the use of one input connector, where the host programs the PSEL pin according to what source is connected (AC adaptor or USB port).

The bq24038 replaces USBPG with pin VBSEL, to enable user selection of the charge voltage. In addition, pin ACPG was modified to PG. PG is active low when either ac power or USB power is detected.

The ISET1 pin programs the battery's fast charge constant current level with a resistor. During normal AC operation, the input supply provides power to both the OUT (System) and BAT pins. For peak or excessive loads (typically when operating from the USB power, PSEL = Low) that would cause the input source to enter current limit (or Q3 - USB FET limiting current) and its source and system voltage (OUT pin) to drop, the dynamic power-path management (DPPM) feature reduces the charging current attempting to prevent any further drop in system voltage. This feature allows the selection of a lower current rated adaptor based on the average load (ISYS-AVG + IBAT-PGM ) rather than a high peak transient load.

    

Pricing / Packaging / CAD Design Tools / Samples

PricePackagingCAD Design ToolsSamples
DeviceStatusTemp (oC)Price | QuantityPackage | PinsTop Side MarkingPackage QTY | Package CarrierSymbolsSamples
BQ24032ARHLRACTIVE-40 to 851.95 | 1kuQFN (RHL) | 20 View 3000 | LARGE T&R Download CAD Format for this Symbol
BQ24032ARHLRG4ACTIVE-40 to 851.95 | 1kuQFN (RHL) | 20 View 3000 | LARGE T&R Download CAD Format for this Symbol
BQ24032ARHLTACTIVE-40 to 852.15 | 1kuQFN (RHL) | 20 View 250 | SMALL T&R Download CAD Format for this SymbolPurchase Samples
BQ24032ARHLTG4ACTIVE-40 to 852.15 | 1kuQFN (RHL) | 20 View 250 | SMALL T&R Download CAD Format for this SymbolPurchase Samples

* Suggested Resale Price per unit (USD) for BUDGETARY USE ONLY. For higher volume price quotes,prices in local currency or delivery quotes, please contact your local Texas Instruments Sales Office or Authorized Distributor.

Inventory

Reported Distributor Inventory as of 12:06 PM GMT, 06 Nov 2009
RegionCompanyIn StockPurchase
TI Lead Time*: 20 WeeksBQ24032ARHLR
EuropeAvnet-SILICA 35
TI Lead Time*: 20 WeeksBQ24032ARHLRG4
None Reported
View Distributors
TI Lead Time*: 20 WeeksBQ24032ARHLT
None Reported
View Distributors
TI Lead Time*: 20 WeeksBQ24032ARHLTG4
None Reported
View Distributors
View all Distributors  

** Lead time information is not available at this time. However, our information is updated daily so please check back with us soon. Please contact your preferred TI Authorized Distributor for additional information.

Quality & Lead (Pb)-Free Data

 Product ContentDPPM / MTBF / FIT Rate
DeviceEco Plan* Lead / Ball FinishMSL Rating / Peak ReflowDetailsDetails
BQ24032ARHLR RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ24032ARHLRG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ24032ARHLT RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView
BQ24032ARHLTG4 RoHS Compliant Green (RoHS & no Sb/Br) CU NIPDAU Level-2-260C-1 YEARViewView

* The planned eco-friendly classification: Pb-Free (RoHS) or Pb-Free (RoHS Exempt) or Green (RoHS & no Sb/Br) - please click on the Product Content Details "View" link in the table above for the latest availability information and additional product content details.

If the information you are requesting is not available online at this time, contact one of our Product Information Centers regarding the availability of this information.

Technical Documents

Most useful technical documents for BQ24032A Help

Datasheet

Application Notes

View Application Notes for Battery Charge Management

User Guides

View User Guides for Battery Charge Management

Tools & Software

NamePart # Company Tool / Software Type
Temp Sense Designer SoftwareTEMPSENSE-SWTexas InstrumentsAnalysis Software
BQ24032A Evaluation ModuleBQ24032AEVMTexas InstrumentsDevelopment Boards/EVMs
Quick Search Selection Tool for Battery ChargersBATTERY_CHARGERS_SELECTION_TOOLTexas InstrumentsFree Evaluation Tools

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