Universal Battery Fuel Gauge IC, 3.6 V to 20 V supply, I2C/SMBus interface, DFN-8

LTC2943IDD#PBF - Universal Battery Fuel Gauge IC, 3.6 V to 20 V supply, I2C/SMBus interface, DFN-8

Image is for illustrative purposes only. Please refer to product description.

Manufacturer Part No:
Order Code:
Technical Datasheet:
See all Technical Docs

Product Overview

The LTC2943IDD#PBF is a Multi-cell Battery Gas Gauge 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 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. The LTC2943 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 registers. It requires only a single low value sense resistor to set the measured current range.
  • Measures accumulated battery charge and discharge
  • 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
  • <120µA Quiescent current


Power Management, Portable Devices, Medical, Imaging, Video & Vision, Multimedia

Product Information

Fuel Gauge
I2C, SMBus
MSL 1 - Unlimited
Find similar products Choose and modify the attributes above to find similar products.

Associated Products

Related Searches


No Longer Stocked

No longer stocked:: true No Longer Manufactured::

Customer Reviews


Like to see information about this product from other customers?

 Read discussions, blogs, documents from our community members.


Select document type(s) you want to see and click “Apply Filters” button
Post a question to one of our experts or start a discussion and get responses from supplier experts and fellow engineers in our community.