Overvoltage Protection Device for 2- to 3-Cell Li-Ion Batteries, with 4.35v OVP
Product details
Parameters
Package | Pins | Size
Features
- 2-Series and 3-Series Cell Overvoltage Monitor for Secondary Protection
- Fixed Programmable Delay Timer
- Fixed OVP Threshold
- Available Range From 3.85 V to 4.6 V
- Fixed OVP Delay Option: 4 s or 6.5 s
- High-Accuracy Overvoltage Protection:
±10 mV - Low Power Consumption ICC ≈ 1 µA
(VCELL(ALL) < VPROTECT) - Low Leakage Current per Cell Input < 100 nA
- Small Package Footprint
- 6-Pin SON
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Description
The bq2945xx family of products is a secondary-level voltage monitor and protector for Li-Ion battery pack systems. Each cell is monitored independently for an overvoltage condition. Based on the configuration, an output is triggered after a fixed delay if any of the two or three cells has an overvoltage condition. This output is triggered into a high state after an overvoltage condition satisfies the specified delay timer.
Technical documentation
Type | Title | Date | |
---|---|---|---|
* | Datasheet | bq2945xx Overvoltage Protection For 2-Series and 3-Series Cell Li-Ion Batteries datasheet (Rev. H) | Dec. 05, 2017 |
User guide | bq294502 EVM User's Guide | Nov. 29, 2011 |
Design & development
For additional terms or required resources, click any title below to view the detail page where available.Hardware development
Description
The bq28z610 EVM evaluation module (EVM) is a complete evaluation system for the bq28z610 or bq294502 battery management system. The EVM includes one bq28z610 and bq294502 circuit module and a link to Windows™ based PC software. The circuit module includes one bq28z610 integrated circuit (...)
Features
- Complete evaluation system for the bq78z100EVM 1s-2s Battery Pack Manager Evaluation Module and bq294502 independent overvoltage protection IC.
- Populated circuit module for quick setup.
- Software that allows data logging for system analysis.
Description
The bq294502EVM-033 is a complete evaluation system for the bq2945xy family of second-level protectors. The EVM includes one bq294502-based circuit module.The bq294502-based circuit module is a complete and compact example solution of a bq294502 second-level voltage protector. The circuit module (...)
Description
The bq78z100EVM-532 evaluation module (EVM) is a complete evaluation system for the bq78z100 or bq294502 battery management system. The EVM includes one bq78z100 and bq294502 circuit module and a link to Windows™ based PC software. The circuit module includes one bq78z100 integrated (...)
Features
- Complete evaluation system for the bq78z100EVM 1s-2s Battery Pack Manager Evaluation Module and bq294502 independent overvoltage protection IC
- Populated circuit module for quick setup
- Software that allows data logging for system analysis
Reference designs
Design files
-
download TIDA-00884 BOM.pdf (78KB) -
download TIDA-00884 Assembly Drawing.pdf (199KB) -
download TIDA-00884 PCB.pdf (388KB) -
download TIDA-00884 Hardware Design File.zip (438KB) -
download TIDA-00884 CAD Files.zip (1250KB)
Design files
-
download TIDA-00895 BOM.pdf (206KB) -
download TIDA-00895 Assembly Drawing.pdf (199KB) -
download TIDA-00895 PCB.pdf (582KB) -
download TIDA-00895 CAD Files.zip (1250KB) -
download TIDA-00895 Hardware Design File.zip (438KB)
CAD/CAE symbols
Package | Pins | Download |
---|---|---|
WSON (DRV) | 6 | View options |
Ordering & quality
- RoHS
- REACH
- Device marking
- Lead finish/Ball material
- MSL rating/Peak reflow
- MTBF/FIT estimates
- Material content
- Qualification summary
- Ongoing reliability monitoring
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