This part is a kind of semiconductor called AD7280A.

Function of this product has Lithium Ion Battery Monitoring System Cell balancing interface.

Manufacturers : Analog Devices

Image and pinout :

Some of the text within the PDF file :

www.net Lithium Ion Battery Monitoring System AD7280A FEATURES 12-bit ADC, 1 μs per channel conversion time 6 analog input channels, common-mode range 0.5 V to 27.5 V 6 auxiliary ADC inputs ±1.6 mV cell voltage accuracy On-chip voltage regulator Cell balancing interface Daisy-chain interface Internal reference: ±3 ppm/oC 1.8 μA power-down current High input impedance Serial interface with alert function 1 SPI interface for up to 48 channels CRC protection on read and write commands On-chip registers for channel sequencing VDD operating range: 8 V to 30 V Temperature range: −40°C to +105°C 48-lead LQFP Qualified for automotive applications FUNCTIONAL BLOCK DIAGRAM SCLKhi SDIhi SDOhi ALERThi CShi PDhi CNVSThi DAISY-CHAIN INTERFACE HV MUX VDD VIN6 VIN5 VIN4 VIN3 VIN2 VI [ ... ]

AD7280A PDF Datasheet Download