MPF4279x family of battery monitors

MPF42790: 2 to 16 Stacked Cells Battery Pack Fuel Gauge with Level LEDs

The MPF42790 is a drop-in solution to provide comprehensive status information on lithium-ion battery strings up to 16 series cells. The MPF42790 estimates the internal state-of-charge (SOC) and state-of-health (SOH) for each cell, as well as the full pack. The MPF42790 also determines remaining runtime, charge time, and instantaneous available power. On-board memory enables the lifetime logging of key parameters.

The MPF42790 is simple to use and supports a variety of lithium cell chemistries and cell sizes. A few basic configurations allow for quick set-up, and advanced configuration capabilities can fine-tune the device for specific applications.

When paired with an MP279x battery monitor, the MPF42790 can achieve SOC accuracy within 3%. The MPF42790 can also be paired with other analog front-end (AFE) or battery stack monitors. The 400kHz I2C interface provides standard, robust communication. The 5-level LED drivers provide a simple, cost-effective charge level indicator for the device.

The MPF42790 is available in a TQFN-32 (4mmx4mm) package.

Features

• Compatible with Commonly used Battery Monitors for up to 16 Series Cells:

            ±3% State-of-Charge (SOC) Accuracy when Paired with MP279x Battery Monitors

• Provides Critical Battery Information:

            Pack and Cell SOC
            Pack and Cell State-of-Health (SOH)
            Remaining Runtime and Charge Time
            Instantaneous Available Power

• Supports a Wide Variety of Lithium Cells
• Adaptive Learning can be Enabled to:

            Refine Initial Charge Settings
            Refine Initial Discharge Settings
            Update Individual Cells’ SOH to Track Degradation

• Provides Lifetime Logging
• Supports 5-Level LED SOC Indicator with Push-Button Trigger
• 2.5V Minimum Supply Voltage
• Low Current Consumption: 6μA in Disabled Mode and 135μA (Average) in Operating Mode during Rest
• Supports Up to 400kHz I2C with CRC for Robust Communication
• Available in a Compact TQFN-32 (4mmx4mm) Package
• Available in Turn-Key MPS BMS Module:

            MBM1xS-P50 and MBM1xS-P10