bq2018 - Benchmarq

bq2018 Power Minder

The bq2018 is a low-cost charge/discharge counter peripheral packaged in an 8-pin TSSOP or SOIC. It works with an intelligent host controller, providing state-of-charge information for rechargeable batteries. The bq2018 measures the voltage drop across a low-value series sense resistor between the negative terminal of the battery and the battery pack ground .

Features

➤ Multifunction charge/discharge counter ➤ Resolves signals less than 12.5µV ➤ Internal offset calibration improves accuracy ➤ 1024 bits of NVRAM configured as 128 x 8 ➤ Internal temperature sensor for self-discharge estimation ➤ Single-wire serial interface ➤ Dual operating modes: - Operating: <80µA - Sleep: <10µA ➤ REG output for low-cost microregulation General Description The bq2018 is a low-cost charge/discharge counter peripheral packaged in an 8-pin TSSOP or SOIC. It works with an intelligent host controller, providing state-of-charge information for rechargeable batteries. The bq2018 .