Texas Instruments BQ7721600PWR battery protection IC, 3-16 cells, Li-ion, over/under voltage and over-temperature protection, 24-TSSOP, Tape & Reel.
| Parameter | Value |
|---|---|
| Mounting | Surface Mount |
| Operating temperature | -40°C ~ 85°C (TA) |
| Package | Tape & Reel (TR); Cut Tape (CT) |
| Function | Battery Protection |
| Case | 24-TSSOP (0.173\", 4.40mm Width) |
| Number of cells | 3 ~ 16 |
| Fault protection | Over Temperature, Over/Under Voltage |
| Battery chemistry | Lithium Ion |
The BQ7721600PWR from Texas Instruments is a voltage and temperature protection IC designed for lithium-ion battery packs with 3 to 16 series cells. It monitors each cell for over-voltage, under-voltage, and over-temperature conditions, triggering an output when a fault is detected.
The 0.65 mm pin pitch and standard TSSOP footprint suit multi-layer PCB layouts where the monitoring traces route to each cell tap.
It is a battery protection IC that monitors 3 to 16 series-connected lithium-ion cells for over-voltage, under-voltage, and over-temperature faults. When a fault is detected, the IC asserts a fault output that can drive an external disconnect switch or alert the system controller.
The BQ296217DSGT is a more limited part — it monitors only 2 to 4 cells and provides over-voltage protection only, without under-voltage or over-temperature. The BQ7721600PWR covers 3-16 cells with all three fault protections, making it a broader-fit device for larger battery stacks. The packages differ: BQ7721600PWR is 24-TSSOP; BQ296217DSGT is a smaller package. They are not pin-compatible drop-in replacements.