STMicroelectronics L9961
L9961 is part of a complete battery pack monitoring, balancing, and protecting system for Li-Ion and Li-Polymer cells in 3, 4 or 5 series configurations. The L9961 uses a high precision ADC to provide cell voltage, stack voltage and temperature conversion via external NTC.| Part No. | L9961 |
|---|---|
| Datasheet | L9961 Download |
| Manufacturer |  STMicroelectronics |
| Description | Battery management system |
| Buy | Stock & Price |
FEATURES
● 2 μA shipment - DEEP SLEEP mode current and 3 μA standby consumption (with VREG LDO active) standby consumption (with VREG LDO active)● Integrated 3.3 V VREG LDO for supplying MCU and LEDs
● Measures cell voltage (3 to 5 cells), with over/undervoltage detection and balance undervoltage protection
● 12-bit voltage measurement with maximum error of ±15 mV in the [1.5 – 4.5] V range, for -40 °C < TJ < 105 °C
● Measures stack voltage, with over/under voltage detection and plausibility check vs. sum of cells
● Measures pack temperature via NTC, with over/undertemperature detection
● Ratiometric temperature measurement with ±0.8% max. gain error in the [0.2 – VREG] V range, for -40 °C < TJ < 105 °C
● Measures battery current, with Coulomb counting, overcurrent (both directions) and short-circuit in discharge protection.
● 16-bit signed current measurement with 0.1% full scale error at room temperature
● I2C peripheral for device programming and data transfers over I2C bus
● Cell...
