LTC2942IDCB#TRMPBF

LTC2942 is a battery gas gauge with temperature, voltage measurement. It measures battery charge state, battery voltage and chip temperature in handheld PC and portable product applications. Its operating range is perfectly suited for single-cell Li-Ion batteries. A precision coulomb counter integrates current through a sense resistor between the battery’s positive terminal and the load or charger. Battery voltage and on-chip temperature are measured with an internal 14bit No Latency ∆∑™ ADC. The three measured quantities (charge, voltage and temperature) are stored in internal registers accessible via the onboard SMBus/I²C interface. It features programmable high and low thresholds for all three 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. It is used in application like low power handheld products, cellular phones, MP3 players, cameras, GPS.

• High accuracy analog integration
• ADC measures battery voltage and temperature
• Integrated temperature sensor, high side sense
• 1% voltage and charge accuracy
• Supply voltage range is 2.7V to 5.5V
• SMBus/I²C interface, configurable alert output/charge complete input
• Supply current is 70µA typical
• Integral nonlinearity is ±1LSB typical
• Operating temperature is -40°C to 85°C
• Package style is 6-lead plastic DFN

Notes

ADI products are only authorized (and sold) for use by the customer and are not to be resold or otherwise passed on to any third party