DS2746G+

The DS2746G+ is a Low-Cost, 2-wire battery monitor with ratiometric A/D inputs in 10 pin TDFN package. This device provides system-side battery capacity monitoring in cost-sensitive applications. It monitors Voltage, bidirectional current and accumulated current measurement data which is provided to host processor over a 2-wire interface. Offset bias and offset blanking features greatly enhance the accuracy of the coulomb counter. DS2746 has two auxiliary A/D inputs to sample the pack identification resistor, thermistor or other voltage source. The results are reported as a ratiometric fraction of the supply voltage eliminating error related to the supply.

• Supply voltage range is 2.5V to 4.5V
• Operating temperature range from -20°C to 70°C
• 14bit bidirectional current measurement
• Current accumulation register resolution
• 11bit battery voltage measurement
• Two 11bit aux input voltage measurements
• Low power consumption
• Monitor 1-cell Li-ion, 3-cell NiMH battery
• Operating temperature range from -20°C to 70°C

Applications

Power Management, Portable Devices

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