DC to DC converter module

Allegro MicroSystems developed a hybrid integrated circuit that integrates a non-isolated buck DC-DC converter circuit with an inductor in a single fully molded package. The IC enables designing a power supply circuit with fewer external components. It is ideal for the replacement of a discrete DC-to-DC converter IC, such as a local regulator on various systems, to lower component count, and to save space.

Features:
Fewer external components required: IC operates just by connecting an input smoothing capacitor, an output smoothing capacitor, and output voltage setup resistance.
Built-in inductor: Built-in power inductor eliminates requirement to evaluate and select the inductor separately.
Sanken proprietary fully molded and integrated package: The full-mold package allows a screw clamp connection to a heatsink. Depending on an output voltage setup and load conditions, the IC can be operated without a heatsink.
Wide input voltage range, high efficiency: Input voltage range of 9 VDC to output of 16 to 40 V. When VO = 12 V at 3 A, the efficiency is 91% (typ).
Various protection functions: Protection functions such as Overcurrent protection (OCP), Overvoltage protection (OVP) and Thermal Shutdown (TSD) are built-in.
Pins 8 and 9 (SW) are test-only terminals for measuring oscillating frequency. Please leave open for normal operation.
RFB is the resistance for setting output voltage. Refer to the Setting Output Voltage section.
C1, C2, C3 recommended values switching mode power supply applications, not for general electronic circuits: 
– C1: 50 V / 1000 μF 
– C2, C3: 25 V / 1000 μF × 2 units