Loading [MathJax]/jax/output/SVG/fonts/TeX/fontdata.js
Data Sheet
BQ77915 3-Series to 5-Series Stackable Ultra-Low Power Primary Protector with Autonomous Cell Balancing and HIBERNATE Mode
1 Features
- Ultra-low quiescent current: 8 µA
typ. (NORMAL mode), 2 µA (HIBERNATE mode)
- Full suite of voltage, current,
and temperature protections
- Smart passive cell balancing removes cell-to-cell imbalance
- Scalable cell count from 3 series
to 20 series or more
- Voltage protection (accuracy ±10
mV for OV, ±18 mV for UV)
- Overvoltage: 3 V to 4.575
V
- Undervoltage: 1.2 V to 3
V
- Open cell and open-wire detection
(OW)
- Current protection
- Overcurrent discharge 1:
–10 mV to –85 mV
- Overcurrent discharge 2:
–20 mV to –170 mV
- Short-circuit discharge:
–40 mV to –340 mV
- Temperature protection
- Overtemperature charge:
45°C or 50°C
- Overtemperature
discharge: 65°C or 70°C
- Additional features:
- Independent charge (CHG)
and discharge (DSG) FET drivers
- Smart cell balancing
algorithm with integrated FETs (up to 50-mA balancing current), also
supports external FETs for higher cell-balancing current
- Ultra-low power HIBERNATE
mode
- High 36-V absolute
maximum rating per cell input
- Resistor programmable
overcurrent (OCD1/2) delay
- SHUTDOWN mode: 0.5-µA
maximum
- Functional Safety-Capable
