Packaging information
Package | Pins TSSOP (PW) | 24 |
Operating temperature range (°C) -40 to 85 |
Package qty | Carrier 2,000 | LARGE T&R |
Features for the BQ77216
- 3-series cell to 16-series cell protection
- High-accuracy
overvoltage
protection
- ± 10 mV at 25°C
- ± 20 mV from 0°C to 60°C
- Overvoltage protection options from 3.55 V to 5.1 V
- Undervoltage protection with options from 1.0 V to 3.5 V
- Open-wire connection detection
- Overtemperature protection
- Random cell connection
- Functional safety-capable
- Fixed internal delay timers
- Fixed detections thresholds
- Fixed output drive type for each of COUT and DOUT
- Active high or active low
- Active high drive to 6 V
- Open drain with the ability to be pulled up externally to VDD
- Low power consumption I CC ≈ 1 µA (V CELL(ALL) < V OV)
- Low leakage current per cell input < 100 nA with open wire detection disabled
- Package footprint options:
- Leaded 24-pin TSSOP with 0.65-mm lead pitch
Description for the BQ77216
The BQ77216 family of products provides a range of voltage and temperature monitoring, including overvoltage (OVP), undervoltage (UVP), open wire (OW), and overtemperature (OT) protection for Li-ion battery pack systems. Each cell is monitored independently for overvoltage, undervoltage, and open-wire conditions. With the addition of an external NTC thermistor, the device can detect overtemperature conditions.
In the BQ77216 device, an internal delay timer is initiated upon detection of an overvoltage, undervoltage, open-wire, or overtemperature condition. Upon expiration of the delay timer, the respective output is triggered into its active state (either high or low, depending on the configuration).