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Product InformationFeatures
Description
The bq2040 Gas Gauge IC With SMBus Interface is intended for battery-pack or in-system installation to maintain an accurate record of available battery charge. The bq2040 directly supports capacity monitoring for NiCd, NiMH, and Li-Ion battery chemistries. The bq2040 uses the System Management Bus v1.0 (SMBus) protocol and supports the Smart Battery Data (SBData) commands. The bq2040 also supports the SBData charge control functions. Battery state-of-charge, remaining capacity, remaining time, and chemistry are available over the serial link. Battery-charge state can be directly indicated using a four-segment LED display to graphically depict battery full-to-empty in 25% increments. The bq2040 estimates battery self-discharge based on an internal timer and temperature sensor and user-programmable rate information stored in external EEPROM. View All Description in Datasheet |
| Price | Packaging | CAD Design Tools | Samples | |||||||
| Device | Status | Temp (oC) | Replaced By | Price | Quantity | Package | Pins | Top Side Marking | Package QTY | Package Carrier | Symbols | Footprints | Samples |
| BQ2040SN-C408 | NRND | 0 to 70 | BQ2040SN-D111 | 4.20 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | Replaced by BQ2040SN-D111 | ||
| BQ2040SN-C408G4 | NRND | 0 to 70 | 4.20 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | Not Available | |||
| BQ2040SN-C408TR | NRND | 0 to 70 | BQ2040SN-D111TR | 3.85 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | Replaced by BQ2040SN-D111TR | ||
| BQ2040SN-C408TRG4 | NRND | 0 to 70 | 3.85 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | Not Available | |||
| BQ2040SN-D111 | ACTIVE | 0 to 70 | 4.20 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | ||||
| BQ2040SN-D111G4 | ACTIVE | 0 to 70 | 4.20 | 1ku | SOIC (D) | 16 | View | 40 | TUBE | ||||
| BQ2040SN-D111TR | ACTIVE | 0 to 70 | 3.85 | 1ku | SOIC (D) | 16 | View | 2500 | LARGE T&R | Purchase Samples | |||
| BQ2040SN-D111TRG4 | 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 12:17 PM GMT, 25 Nov 2009 | |||
| Region | Company | In Stock | Purchase |
| TI Lead Time*: 20 WeeksBQ2040SN-C408 | |||
| Americas | Newark | 80 | |
| Rochester Electronics | >1k | ||
| Asia | Farnell Asia | 15 | |
| Europe | Farnell | 15 | |
| Worldwide | Mouser Electronics | 31 | |
| TI Lead Time*: 20 WeeksBQ2040SN-C408G4 | |||
| None Reported View Distributors | |||
| TI Lead Time*: 20 WeeksBQ2040SN-C408TR | |||
| Americas | Rochester Electronics | >1k | |
| TI Lead Time*: 20 WeeksBQ2040SN-C408TRG4 | |||
| None Reported View Distributors | |||
| TI Lead Time*: 20 WeeksBQ2040SN-D111 | |||
| Americas | Arrow | 400 | |
| Avnet | 40 | ||
| Rochester Electronics | >1k | ||
| Asia | WPI | 13 | |
| Europe | Spoerle | 80 | |
| Worldwide | Mouser Electronics | 13 | |
| TI Lead Time*: 20 WeeksBQ2040SN-D111G4 | |||
| Worldwide | Mouser Electronics | 92 | |
| TI Lead Time*: 20 WeeksBQ2040SN-D111TR | |||
| Americas | Arrow | 930 | |
| Rochester Electronics | >1k | ||
| TI Lead Time*: 20 WeeksBQ2040SN-D111TRG4 | |||
| None Reported View 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.
| Product Content | DPPM / MTBF / FIT Rate | ||||
| Device | Eco Plan* | Lead / Ball Finish | MSL Rating / Peak Reflow | Details | Details |
| BQ2040SN-C408 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2040SN-C408G4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2040SN-C408TR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2040SN-C408TRG4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
BQ2040SN-D111  | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2040SN-D111G4 | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2040SN-D111TR | Green (RoHS & no Sb/Br) | CU NIPDAU | Level-2-260C-1 YEAR | View | View |
| BQ2040SN-D111TRG4 | 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 BQ2040 
View Application Notes for Battery Fuel Gauges
| Name | Part # | Company | Tool / Software Type |
| BQ2040 Evaluation Kit for NiMH, 10.8V | BQ2040EVM-001 | Texas Instruments | Development Boards/EVMs |
| EV2200 PC Interface Board | EV2200 | Texas Instruments | Development Boards/EVMs |
| |||
| Part # | Name | Product Family | Comments |
| BQ2060 | Multi-Chemistry SBS 1.1 Compliant Gas Gauge With 5 LED Drivers, Additional Battery Mgmt Control | BATTERY MANAGEMENT - BATTERY FUEL GAUGES | The device has the SAME FUNCTIONALITY as the compared device, but is not pin-for-pin equivalent and may not be parametrically equivalent. |
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