BQ2040SN-C408
ActiveMULTI-CHEMISTRY SMART BATTERY SYSTEM (SBS) 1.0 COMPLIANT GAS GAUGE WITH 4 LED DRIVERS
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BQ2040SN-C408
ActiveMULTI-CHEMISTRY SMART BATTERY SYSTEM (SBS) 1.0 COMPLIANT GAS GAUGE WITH 4 LED DRIVERS
Technical Specifications
Parameters and characteristics for this part
| Specification | BQ2040SN-C408 |
|---|---|
| Battery Chemistry | Multi-Chemistry |
| Fault Protection | Over Temperature, Over Current, Over/Under Voltage |
| Function | Battery Monitor |
| Interface | SMBus |
| Mounting Type | Surface Mount |
| Operating Temperature [Max] | 70 °C |
| Operating Temperature [Min] | 0 °C |
| Package / Case | 16-SOIC |
| Package / Case [x] | 0.154 in |
| Package / Case [y] | 3.9 mm |
| Supplier Device Package | 16-SOIC |
Pricing
Prices provided here are for design reference only. For realtime values and availability, please visit the distributors directly
| Distributor | Package | Quantity | $ | |
|---|---|---|---|---|
| Digikey | Tube | 80 | $ 12.48 | |
| Texas Instruments | TUBE | 1 | $ 14.83 | |
| 100 | $ 12.95 | |||
| 250 | $ 9.99 | |||
| 1000 | $ 8.93 | |||
Description
General part information
BQ2040 Series
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. The bq2040 also automatically recalibrates or \x93learns\x94 battery capacity in the full course of a discharge cycle from full to empty.
Documents
Technical documentation and resources
