SGM37863

The SGM37863 is a single LED flash driver that is compact and highly customizable. The constant current LED source allows for flexible adjustment from 16mA up to 1.5A in flash mode, and from 4mA up to 388mA or from 3mA up to 204mA in torch mode, each with 128 levels. It employs a synchronous Boost converter with a fixed frequency of 2MHz or 4MHz to automatically adjust the output voltage to maintain at least minimum headroom voltage V_HR across the current source, with V_HR being the difference between V_OUT and V_LED. The utilization of an adaptive control method ensures that the current source is regulated and efficiency is maximized. 

The SGM37863 features include an I² C interface for management, hardware flash enable pin (STROBE), and the options for 2MHz or 4MHz switching frequency, as well as 1.9A or 2.8A Boost current limit, making it possible to use small, low-profile inductors and ceramic capacitors. The protection functions include input voltage flash monitor (IVFM), over-voltage protection (OVP), LED and VOUT short protection, thermal scale-back (TSB) and thermal shutdown (TSD). The recommended operating temperature range is from -40℃ to +85℃.