3.1.3 Power Management Integrated Circuit (PMIC)

The MCP16502 is a high-performance power management IC providing four output voltages with maximum efficiency, compatible with Microchip’s eMPUs (Embedded Microprocessor Units) and associated DRAM memories. It is compatible with SAM9X7.

The MCP16502 integrates four DC-DC buck regulators and two auxiliary LDOs and provides a comprehensive interface to the MPU.

All buck channels can support loads up to 1A and are 100% duty-cycle capable.

Two 300 mA LDOs are provided so that sensitive analog loads can be supported.

For more information about the MCP16502, refer to the product web page.

Detailed information on the SAM9X75D2G MPU power supplies and power-up/down considerations are described in section “Electrical Characteristics” in the SAM9X7 Series Data Sheet.

The MCP16502 comes preset to supply all the voltage rails needed by the system:

• OUT1: 3.3V supplies SAM9X75D2G I/O pads.
• OUT2: 1.35V supplies SAM9X75D2G DDR3L pads (VDDIODDR).
• OUT3: 1.15V supplies SAM9X75D2G Core (VDDCORE).
• OUT4: available in J6.
• LOUT1: available in J4.
• LOUT2: available in J5.

The following figure shows the power management scheme.