MIC7401
EVALUATION BOARD
USER’S GUIDE
2016 - 2018 Microchip Technology Inc.
DS50002723A-page 9
Chapter 1. Product Overview
1.1
INTRODUCTION
This chapter provides an overview of the MIC7401 Evaluation Board and covers the
following topics:
•
1.2 “MIC7401 Device Short Overview”
1.3 “The MIC7401 Evaluation Board”
1.4 “What the MIC7401 Evaluation Board Kit Includes”
1.2
MIC7401 DEVICE SHORT OVERVIEW
The MIC7401 is a powerful, highly integrated, configurable, power-management IC
(PMIC) featuring five synchronous buck regulators, one boost regulator, and
high-speed I
2
C interface with an internal EEPROM and micro-power shutdown. The
device offers two distinct modes of operation: standby mode and normal mode.
In Normal mode, the programmable switching converters can be configured to support
a variety of features, including start-up sequencing, timing, soft-start ramp, output
voltage levels, current-limit levels and output discharge for each channel.
In Standby mode, the PMIC can be configured in a low-power state by either disabling
an output or by changing the output voltage to a lower level. Independent exit from
Standby mode can be achieved either by I
2
C communication or the external STBY pin.
Powering up the MIC7401 directly into Standby mode does not offer the advantages of
Normal mode power-up (sequencing, timing and soft-start ramp control) and should be
avoided.
All switchers provide light-load efficiency with HyperLight Load mode for buck and PFM
mode for boost. An additional benefit of this architecture is a very-low output ripple
voltage throughout the entire load range while still using small inductors and output
capacitors.
The MIC7401 is available in a thermally-efficient, space-saving 36-pin
4.5 mm x 4.5 mm x 0.85 mm FQFN package with an operating junction temperature
range of –40
°
C to +125
°
C.
