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Product InformationFeatures
Description
The bq29311 is a three- or four-cell lithium-ion battery pack protection analog front end (AFE) IC that incorporates a 3.3-V 25-mA low-dropout regulator (LDO) and an I2C compatible interface to extract battery parameters such as cell voltages and control output status. Other parameters, such as overcurrent protection threshold and delay, can also be programmed into the bq29311 to increase the flexibility of the battery management system. The bq29311 provides safety protection in overcurrent, short circuit, overvoltage, and undervoltage conditions via control from the battery management host. In overcurrent and short-circuit conditions the bq29311 can activate the FET drive as a secondary protection level. The communications interface allows the host to control and observe the current status of the protection, to set overcurrent levels for charge and discharge, to set the overcurrent blanking delay time, short-circuit threshold levels, and short-circuit blanking delay time, and to program for the VREG shutdown voltage and brownout-detection thresholds. View All Description in Datasheet |
| Price | Packaging | CAD Design Tools | Samples | ||||||
| Device | Status | Temp (oC) | Price | Quantity | Package | Pins | Top Side Marking | Package QTY | Package Carrier | Symbols | Footprints | Samples |
| BQ29311PW | ACTIVE | -25 to 85 | 1.10 | 1ku | TSSOP (PW) | 24 | View | 60 | TUBE | |||
| BQ29311PWG4 | ACTIVE | -25 to 85 | 1.10 | 1ku | TSSOP (PW) | 24 | View | 60 | TUBE | |||
| BQ29311PWR | ACTIVE | -25 to 85 | 1.00 | 1ku | TSSOP (PW) | 24 | View | 2000 | LARGE T&R | Purchase Samples | ||
| BQ29311PWRG4 | ACTIVE | -25 to 85 | 1.00 | 1ku | TSSOP (PW) | 24 | View | 2000 | LARGE T&R | Purchase 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.
| Reported Distributor Inventory as of 12:12 PM GMT, 22 Nov 2009 | |||
| Region | Company | In Stock | Purchase |
| TI Lead Time*: 20 WeeksBQ29311PW | |||
| Americas | Avnet | 4 | |
| Newark | >1k | ||
| Rochester Electronics | >1k | ||
| Worldwide | DigiKey | 79 | |
| TI Lead Time*: 20 WeeksBQ29311PWG4 | |||
| Worldwide | DigiKey | Available | |
| Mouser Electronics | 90 | ||
| TI Lead Time*: 20 WeeksBQ29311PWR | |||
| Americas | Rochester Electronics | >1k | |
| Asia | WPI | >1k | |
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 20 WeeksBQ29311PWRG4 | |||
| Americas | Rochester Electronics | >1k | |
| Worldwide | DigiKey | Available | |
** 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.
| Product Content | DPPM / MTBF / FIT Rate | ||||
| Device | Eco Plan* | Lead / Ball Finish | MSL Rating / Peak Reflow | Details | Details |
BQ29311PW  | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| BQ29311PWG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| BQ29311PWR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
| BQ29311PWRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-1-260C-UNLIM | View | View |
* 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.
Most useful technical documents for BQ29311 
| Part # | Name | Product Family | Comments |
| BQ29400 | 2nd Level Over Voltage Protection for 2, 3, or 4 Cell LiIon & LiPoly Batteries (2nd Lev Protection) | BATTERY MANAGEMENT - LITHIUM ION PROTECTION | Overvoltage Protection for 2-, 3-, or 4 Cell LiIon and LiPoly Batteries (2nd level Protection) |
| Customers Who Evaluated This Product Also Evaluated... | |||
| BQ29330 | Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE | BATTERY MANAGEMENT-LITHIUM ION PROTECTION | TI customers also evaluated this product. |
| BQ29312A | Two, Three and Four Cell Lithium or Lithium-Polymer Battery Protection AFE | BATTERY MANAGEMENT-LITHIUM ION PROTECTION | TI customers also evaluated this product. |
| BQ29419 | Voltage Protection for 2, 3, or 4 Cell Li-Ion Batteries | BATTERY MANAGEMENT-LITHIUM ION PROTECTION | TI customers also evaluated this product. |
| BQ29410 | Secondary Over-Voltage Protection for 2-4 cell in series Li-Ion/Poly (4.35V) | BATTERY MANAGEMENT-LITHIUM ION PROTECTION | TI customers also evaluated this product. |
| BQ77PL900 | 5-10 cell Li-ion Battery protection & AFE | BATTERY MANAGEMENT-LITHIUM ION PROTECTION | TI customers also evaluated this product. |
| BQ2085-V1P3 | SBS-Compliant Gas Gauge IC For Use With The bq29311 | BATTERY MANAGEMENT-BATTERY FUEL GAUGES | TI customers also evaluated this product. |
| BQ2083-V1P3 | SBS-Compliant Gas Gauge for Use with bq29311 | BATTERY MANAGEMENT-BATTERY FUEL GAUGES | TI customers also evaluated this product. |
| BQ2000 | Switch-mode Multi-Chemistry Battery Charger with Peak Voltage Detection Termination | BATTERY MANAGEMENT-BATTERY CHARGE MANAGEMENT | TI customers also evaluated this product. |
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