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Product InformationFeatures
Description
The bq2050 Lithium Ion Power Gauge™ IC is intended for battery-pack or in-system installation to maintain an accurate record of available battery capacity. The IC monitors a voltage drop across a sense resistor connected in series between the negative battery terminal and ground to determine charge and discharge activity of the battery. Compensations for battery temperature and rate of charge or discharge are applied to the charge, discharge, and self-discharge calculations to provide available capacity information across a wide range of operating conditions. Battery capacity is automatically recalibrated, or "learned," in the course of a discharge cycle from full to empty. Nominal available capacity may be directly indicated using a five-segment LED display. These segments are used to graphically indicate available capacity. The bq2050 supports a simple single-line bidirectional serial link to an external processor (common ground). The bq2050 outputs battery information in response to external commands over the serial link. The bq2050 may operate directly from one cell (VBAT > 3V). With the REF output and an external transistor, a simple, inexpensive regulator can be built for systems with more than one series cell. Internal registers include available capacity, temperature, scaled available energy, battery ID, battery status, and programming pin settings. To support subassembly testing, the outputs may also be controlled. The external processor may also overwrite some of the bq2050 power gauge data registers. |
| Price | Packaging | CAD Design Tools | Samples | ||||||
| Device | Status | Temp (oC) | Price | Quantity | Package | Pins | Top Side Marking | Package QTY | Package Carrier | Symbols | Footprints | Samples |
| BQ2050SN-D119 | ACTIVE | 0 to 70 | 4.20 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | |||
| BQ2050SN-D119G4 | ACTIVE | 0 to 70 | 4.20 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | |||
| BQ2050SN-D119TR | ACTIVE | 0 to 70 | 3.85 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | Purchase Samples | ||
| BQ2050SN-D119TRG4 | ACTIVE | 0 to 70 | 3.85 | 1ku | SOIC (D) | 16 | View | 2500 | 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 12:08 PM GMT, 08 Nov 2009 | |||
| Region | Company | In Stock | Purchase |
| TI Lead Time*: 14 WeeksBQ2050SN-D119 | |||
| Americas | Avnet | 400 | |
| Rochester Electronics | >1k | ||
| Worldwide | DigiKey | >1k | |
| Mouser Electronics | 145 | ||
| TI Lead Time*: 14 WeeksBQ2050SN-D119G4 | |||
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 14 WeeksBQ2050SN-D119TR | |||
| Americas | Avnet | >1k | |
| Worldwide | DigiKey | Available | |
| TI Lead Time*: 14 WeeksBQ2050SN-D119TRG4 | |||
| 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 |
BQ2050SN-D119  | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2050SN-D119G4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2050SN-D119TR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2050SN-D119TRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | 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 BQ2050 
View Application Notes for Battery Fuel Gauges
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