3.1.2
Power Management Integrated Circuit
The MCP16502 is a fully-featured PMIC optimized for Microchip MPU devices.
The MCP16502 integrates four DC-DC buck regulators and two auxiliary LDOs, and provides a comprehensive
interface to the MPU, which includes an interrupt flag and an I
2
C interface.
All buck channels can support loads up to 1A. All bucks are 100% duty cycle capable.
Two 300 mA LDOs are provided so that sensitive analog loads can be supported.
The default power channel sequencing is built-in, according to the requirements of the Microchip MPU device.
The MCP16502 features a low no-load operational quiescent current, and draws less than 10 µA in full shutdown.
Active discharge resistors are provided on each output. All buck channels support safe start-up into pre-biased
outputs.
The MCP16502 is available in a 32-pin 5 mm x 5 mm VQFN package with an operating junction temperature range
from –40°C to +125°C. It is AEC-Q100 Grade 2 (T
AMB
=105°C) qualified. For more information on the MCP16502,
refer to the product
.
The MCP16502AB comes preset to supply all the voltage rails required by the system:
• 3.3V DC/DC supplies SAMA7G5 I/O pads and devices.
• 1.35V DC/DC supplies SAMA7G5 DDR3 pads (VDDIODDR) and devices.
• 1.1V DC/DC supplies SAMA7G5 core (VDDCORE).
• 1.275V DC/DC supplies SAMA7G5 CPU (VDDCPU).
• 1.8V LDO supplies the SD Card interface and the e.MMC.
The figure below shows the power management scheme.
SAMA7G54-EK
Function Blocks
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2022 Microchip Technology Inc.
and its subsidiaries
User Guide
DS50003273A-page 11
