Analog Devices Inc. LTC2943 Multicell Battery Gas Gauges
Analog Devices Inc. LTC2943 Multicell Battery Gas Gauges can measure battery charge state, voltage, current, and temperature in portable product applications. The LTC2943 from Analog Devices has a wide input voltage range that allows use with multicell batteries up to 20V. A precision coulomb counter integrates current through a sense resistor between the battery's positive terminal and the load or charger. Voltage, current, and temperature are measured with an internal 14-bit No Latency ΔΣ™ ADC. The measurements are stored in internal registers accessible via the onboard I2C/SMBus Interface.
Features
- Measures accumulated battery charge and discharge
- 3.6V to 20V operating range for multiple cells application
- 14-bit ADC measures voltage, current, and temperature
- 1% voltage, current, and charge accuracy
- ±50mV sense voltage range
- High side sense
- General-purpose measurements for any battery chemistry and capacity
- I2C/SMBus interface
- Configurable alert output/charge complete input
- Quiescent current less than 120μA
- Small 8-lead 3mm × 3mm DFN package
Applications
- Power tools
- Electric bicycles
- Portable medical equipment
- Video cameras
Typical Application
Publicado: 2017-06-07
| Actualizado: 2022-04-14