One of the significant differences between DDR and LPDDR is that DDR uses a fixed 64-bit bus. LPDDR also offers 32-bit or 16-bit bus options for use cases with lower requirements. LPDDR1 requires only 1.8 V which reduces the operating temperature compared to DDR1 which also requires less frequent refreshing.
We offer LPDDR components from the following manufacturers:
MEMPHIS Electronic GmbH
Basler Str. 5
61352 Bad Homburg
Germany
Phone: +49 6172 90350
Email: info@memphis.de
256Mb - 2Gb
200MHz
commercial and industrial grades 
x16, x32
FBGA60, FBGA90