| Distributor | Stock | Pricing | MOQ | PKG | Lead Time | Date Code | On Order Quantity | On Order Delivery | |
|---|---|---|---|---|---|---|---|---|---|
|
8,100 pcs
|
8100 pcs | On Request | 1 | On Request | On Request | 11+ | On Request | On Request | |
|
6,460 pcs
|
6460 pcs | On Request | 1 | On Request | On Request | On Request | On Request | On Request | |
|
2,210 pcs
|
2210 pcs | On Request | 1 | On Request | On Request | 1223+ | On Request | On Request |
| Category | |
| Manufacturer Name | |
| Battery Chemistry | |
| Fault Protection | |
| Function | |
| Input Voltage | |
| Mounting Type | |
| Number of Cells | |
| Operating Temperature | |
| Supplier Device Package |
The BQ29440DRBR from Texas Instruments is a secondary overvoltage protection integrated circuit specifically designed for 2-series, 3-series, or 4-series cell Li-Ion battery packs. It incorporates a high-accuracy precision overvoltage detection circuit that compares the voltage of each cell against an internal reference.
Key electrical specifications include a typical operating current of 2 µA and a maximum input voltage of 28 V. The overvoltage protection threshold is nominally 4.35 V, with minimum and maximum values specified at 4.325 V and 4.375 V, respectively. The device also offers high-accuracy overvoltage protection of ±25 mV within a temperature range of 0°C to 60°C, and provides fixed overvoltage protection thresholds at 4.30 V, 4.35 V, 4.40 V, 4.45 V, and 4.50 V.
This IC features an external capacitor-controlled delay timer, allowing for adjustable delay periods before triggering an output state change. It is available in a compact 8-lead VSON package with dimensions of 3 mm x 3 mm, suitable for space-constrained applications. The operating temperature range is -40°C to 85°C.
Applications for the BQ29440DRBR include second-level protection in Li-Ion battery packs for notebook computers, power tools, 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 nominal overvoltage protection threshold is 4.35V, with a minimum of 4.325V and maximum of 4.375V.
The typical operating current is 2 µA.
The operating temperature range is -40°C to 85°C.
The device is available in 8-SON (3x3) and 8-VDFN Exposed Pad packages, both surface mount.
It can protect 2 to 4 series Li-Ion cells.
The accuracy is ±25 mV over the temperature range of 0°C to 60°C.
The maximum input voltage is 28 V.