Hi Usha,
The MC33771C datasheet and other useful documents such as the Hardware Design Guidelines, Layout Recommendations, Programming Guide are classified as secure files requiring an NDA.
If your company has not signed the NDA with NXP yet, you can request it from:
https://www.nxp.com/support/support:SUPPORTHOME
If there is a valid NDA in place, you can download them from the following website:
https://www.nxp.com/products/power-management/battery-management/battery-cell-controllers/14-channel...
BR, Tomas
