LTC2944
Features
- Measures Accumulated Battery Charge and Discharge
- 3.6V to 60V Operating Range for Multiple Cells
- 14-Bit ADC Measures Voltage, Current and Temperature
- 1% Voltage, Current and Charge Accuracy
- ±50mV Sense Voltage Range
- High Side Sense
- I2C Interface/SMBus Interface
- General Purpose Measurements for Any Battery Chemistry and Capacity
- Configurable Alert Output/Charge Complete Input
- Quiescent Current Less Than 150μA
- Small 8-Lead 3mm × 3mm DFN Package
Typical Application
Description
The LTC®2944 measures battery charge state, battery voltage, battery current and its own temperature in portable product applications. The wide input voltage range allows use with multicell batteries up to 60V. 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.
The LTC2944 features programmable high and low thresholds for all four measured quantities. If a programmed threshold is exceeded, the device communicates an alert using either the SMBus alert protocol or by setting a flag in the internal status register. The LTC2944 requires only a single low value sense resistor to set the measured current range.
Applications
- Electric and Hybrid Electric Vehicles
- Power Tools
- Electric Bicycles, Motorcycles, Scooters
- High Power Portable Equipment
- Photo Voltaics
- Backup Battery Systems
People Who Viewed This Product Also Viewed
- LTC4020 - 55V Buck-Boost Multi-Chemistry Battery Charger
- LT4320/LT4320-1 - Ideal Diode Bridge Controller
- LT8490 - High Voltage, High Current Buck-Boost Battery Charge Controller with Maximum Power Point Tracking (MPPT)
- LTC4015 - Multichemistry Buck Battery Charger Controller with Digital Telemetry System
- LTC4000 - High Voltage High Current Controller for Battery Charging and Power Management
- LT8390 - 60V Synchronous 4-Switch Buck-Boost Controller with Spread Spectrum
- LT8705 - 80V VIN and VOUT Synchronous 4-Switch Buck- Boost DC/DC Controller
- LTC2943 - Multicell Battery Gas Gauge with Temperature, Voltage and Current Measurement
- LTC4364 - Surge Stopper with Ideal Diode
- LT3796/LT3796-1 - 100V Constant-Current and Constant-Voltage Controller with Dual Current Sense
