MAX17320 ModelGauge m5 EZ Fuel Gauge

Analog Devices MAX17320 ModelGauge m5 EZ Fuel Gauge is a 38µA I_Q stand-alone pack-side fuel gauge IC with protector and battery internal self-discharge detection. It also includes an optional SHA-256 authentication for 2- to 4-series lithium-ion/polymer batteries. The IC monitors the battery's voltage, current, temperature, and state to protect against over/undervoltage, overcurrent, short-circuit, over/under temperature, and overcharge. The guage also includes internal self-discharge conditions using external high-side N-FETs. It provides a charging prescription to ensure that the battery operates under safe conditions, thereby prolonging the life of the battery. ADI MAX17320 balances the cells using internal FETs. During prequal charging, the IC uses the CHGFET to control charging linearly.