The MP2797 is a robust battery management device providing a complete analog front-end  monitoring and protection solution. It is designed  for multiple-series cell battery management systems (BMS). The MP2797 supports I2C or SPI communication. The MP2797 supports connections for 7-cell to  16-cell series battery packs, with an absolute  voltage exceeding 80V on particular pins. The MP2797 integrates two separate analog-todigital converters (ADCs). The first ADC measures each channel’s differential cell  voltages (up to 16 channels), die temperature  and 4-channel temperature via an external NTC thermistor. The second ADC measures the charge/discharge current via an external sense  resistor. The MP2797 has high-side drivers and features  robust protection functions, such as over-current  protection (OCP), short-circuit protection (SCP),  battery under-voltage protection (UVP), battery  over-voltage protection (OVP), and high/low  temperature protection. All of the protections  have configurable thresholds. The MP2797 features an internal autonomous  state machine that leverages the ADC to ensure  monitoring of cell safe operating area according  to the programmed thresholds.  The MP2797 also integrates the balancing FETs to equalize the mismatched cells with the option  to drive the external balancing FETs. The MP2797 has an optimized baseline current  consumption that depends on the operating  mode. For applications requiring compliance with IPC  2221B or UL 60950-1 conformal coating might  be required depending on the pack voltage. The MP2797 is available in a TQFP-48  (7mm×7mm) package.

　FEATURES

　　

　　 Supports 7 to 16 Stacked Cells

　　

　　 I2C or SPI Interface, Support 8-bit CRC

　　

　　 AFE Monitor

　　

　　o Two Separate ADCs Provide Cell and Pack Voltage Strictly Synchronized with Current

　　

　　o 15-Bit ADC with ≤ 5 mV Total Cell Measurement Error at 25°C

　　

　　o 16-Bit ADC with ±0.5% (Pack Current and Coulomb Counting) Measure Error at 25°C via SRP-SRN

　　

　　 Hardware Programmable Protections:

　　

　　o Dis/Charge Over-Current Protection

　　

　　o Dis/Charge Short-Circuit Protection

　　

　　o Cell Under/Over-Voltage Protection

　　

　　o Pack Under/Over-Voltage Protection

　　

　　o Cells Low/High Temperature Protection

　　

　　o Die High Temperature Protection

　　

　　 Integrated High Side FET Driver

　　

　　o Capable of Driving More than 4 Parallel N-channel MOSFETs

　　

　　o DSG Soft Turn On Without Pre-Biasing Circuit

　　

　　o GPIO or Register Control FET

　　

　　 Automatic or Manual Cell Balancing

　　

　　 Delicate Function

　　

　　o Reduced Current Standby Mode

　　

　　o Load / Charger Plug-In Detection

　　

　　o HV and LV GPIOs

　　

　　o Open Wire Detection

　　

　　o Persistent Dead Battery Flag

　　

　　o Lockable MTP for Protection Thresholds

　　

　　 Random Cell Connection Tolerant

　　

　　 48-pin TQFP Package

　　

　　APPLICATIONS

　　

　　 Energy Storage System (ESS)

　　

　　 E-bike, E-scooter

　　

　　 Light Electric Vehicles (LEV)

　　

　　 Power and Gardening Tools

　　

　　 Battery Backup and UPS