| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
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400 pcs
|
400 pcs | On Request | 1 | On Request | On Request | 11+ | On Request | On Request | |
|
253 pcs
|
253 pcs | On Request | 1 | On Request | On Request | 14+ | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Battery Chemistry | |
| Fault Protection | |
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| Supplier Device Package |
The BQ29442DRBR is a secondary overvoltage protection IC from Texas Instruments, suitable for 2-series, 3-series, or 4-series cell Li-Ion battery packs. It incorporates a high-accuracy precision overvoltage detection circuit.
The device compares the voltage of each cell against an internal reference. If an overvoltage condition is detected, a timer initiates a delay based on external capacitance. Upon timer expiration, the output pin changes state. An optional latch configuration can hold the output high until the CD pin is shorted to GND.
Key electrical features include low power consumption with typical ICC less than 2 µA when cells are below the protection threshold. It provides high-accuracy overvoltage protection with ±25 mV accuracy between 0°C and 60°C. Fixed overvoltage protection thresholds are available at 4.30V, 4.35V, 4.40V, 4.45V, and 4.50V.
The BQ29442DRBR is housed in a small 8-lead SON package and is designed for surface mount applications. It is commonly used in battery packs for notebook computers, power tools, and portable equipment and instrumentation.
| Qty | Low | High |
|---|---|---|
| 1+ | $1.00 | $1.00 |
Estimated market price range - modelled values for guidance only, not live distributor offers.
The BQ29442DRBR is designed for 2 to 4-cell Lithium Ion battery packs.
The operating temperature range is -40°C to 85°C.
Fixed overvoltage protection thresholds are available at 4.30V, 4.35V, 4.40V, 4.45V, and 4.50V.
The overvoltage protection accuracy is ±25 mV with a temperature range of 0°C to 60°C.
The typical current consumption (ICC) is less than 2 µA when cells are below the protection threshold.
The BQ29442DRBR is supplied in an 8-lead SON (3x3) package, also described as 8-VDFN Exposed Pad.