MPF42790

2s to 16s Stacked Cells Battery Pack Fuel Gauge with Level LEDs

Pre-Release

Description

The MPF42790 is a drop in solution to provide accurate and robust State of Charge estimate for application from 2 and up to 16 stacked lithium batteries and so nominal battery pack voltages ranging from 7.4V to 60V.

The MPF42790 can work with different lithium cell leveraging different chemistries and different float voltage.

A wide variety of applications can be supported by the MPF42790 given the extensive set of configurable settings to adjust the estimate based on the specific operating voltage of the application.

The MPF42790 is very flexible since it can be paired with any type of Analog Front End (AFE), leveraging the System’s MCU to provide the battery pack readings.

The MPF42790 provides I2C interface with support for CRC to ensure integrity of the exchanged data.

Requires battery pack ADC readings for each group of stack cells from the Analog Front End (AFE), provided through the Host MCU.

Features & Benefits

Supports for a wide variety of lithium cells using a matching Lithium Cell profile
Configurable Battery Pack (series / parallel)
Packs state of charge supports tuning from:Pack Empty Voltage
Full Voltage and Termination Current with learning ability
Additional end-application metrics:Residual Run and Charge Time
Available Power
Pack and Cell State of Health
Supports Fine Tuning of Battery Pack wiring Resistance
6 µA Current consumption in Disable Mode
Auto Active to Rest Transition achieves 135 µA average in system current consumption
Provides Immediate State of Charge reporting to user with 5 level LED
Pushbutton trigger detection
Works with Any Battery Pack AFE IC
Provides Lifetime Logging Function
Supports up to 400kHz I2C with CRC for robust communication
Available in 32 Pin QFN 4 mm x 4 mm