Hi, I contacted ST Micro and asked for a datasheet. Their reply " it is a custom design for Bosch and we cannot release any informaiton". They suggested I contact Boach for info. I did so and they replied it is proprietary and wouldnt release any information. So, I replied how about a "pinout" with names only and sent an example. Result NO RESPONSE do it take that to be a NO. The chips are available in China and elsewhere.
My solution is to build a multi cell charger using the MAX712 and 713 which will handle 1 to 12 cells.