MP4582 100 V Synchronous Step-Down DC/DC Converter

The Monolithic Power Systems MP4582 is an 8 μA quiescent current (I_Q) synchronous step-down converter with integrated high-side and low-side MOSFETs (HS-FET and LS-FET, respectively). It supports up to 2 A of output current (I_OUT) with internal compensation. High power conversion efficiency across a wide load range is achieved through power-save mode (PSM) and a low I_Q under light-load conditions to reduce the switching and gate driver losses.

To achieve a small output ripple at light loads, pull the MODE/SYNC pin high to enable forced continuous conduction mode (FCCM). The switching frequency (f_SW) is always fixed at 400 kHz for all load conditions. Full protection features include overcurrent protection (OCP), short circuit protection (SCP) with hiccup mode, input voltage (V_IN) and output voltage (V_OUT) overvoltage protection (OVP), and overtemperature protection (OTP). The MP4582 is available in a QFN-19 (3 mm x 5 mm) package.