Maxim MAX8930 integrated power-management IC

Maxim has released the MAX8930, an integrated power-management IC for mobile phone displays.

By integrating a white LED driver, passive-matrix organic LED driver and a linear drop-out regulator in a 10 mm² package, this PMIC reduces size by over 45% compared with discrete implementations.

The device uses an adaptive-charge-pump architecture (1x or -0.5x) and dimming techniques to achieve up to 93% efficiency. Moreover, it averages 90% efficiency over the 3.5 to 3.7 V input range, in which the lithium-ion (Li+) cell operates most often.

The IC features an I²C-compatible control interface and dimming to extend battery life. Automatic luminance control automatically adjusts the WLED brightness according to the ambient-light level, while the content-adaptive interface optimises brightness based on the gamma-correction information of the image.