Microchip Technology MIC23350, Руководство пользователя

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MIC23350
EVALUATION BOARD
USER’S GUIDE

2018 Microchip Technology Inc. DS50002833A-page 7
Chapter 1. Product Overview
1.1 INTRODUCTION
This chapter provides an overview of the MIC23350 Evaluation Board and covers the
following topics:
•
MIC23350 Device Short Overview
• What is the MIC23350 Evaluation Board?
• Contents of the MIC23350 Evaluation Board Kit
1.2 MIC23350 DEVICE SHORT OVERVIEW
The MIC23350 device is a compact, high-efficiency, low-voltage, 3A continuous
current, synchronous step-down regulator. The HyperLight Load™ provides very high
efficiency at light loads, while still having an ultra-fast transient response. The
MIC23350 device’s output voltage is set by two V
SEL
(Voltage Selection) three-state
pins, which allow for nine possible combinations. Table 2-1 details the possible
combinations and the resulting output voltage. The 2.4V to 5.5V input voltage range,
low shutdown and quiescent currents make the MIC23350 device ideal for single-cell
Li-Ion battery-powered applications. The 100% duty cycle capability provides
low-dropout operation, extending the operating range in portable systems.
An open-drain Power Good (PG) output is provided to indicate when the output voltage is
within 9% of regulation and facilitates output voltage monitoring and supply sequencing.
When set in shutdown (EN = GND), the MIC23350 device draws a typical current of 1.5 µA.
MIC23350 is available in a thermally efficient, 16-lead 2.5 mm x 2.5 mm x 0.55 mm thin
FTQFN package, with an operating junction temperature range from -40°C to +125°C.
More detailed information regarding the capabilities of the MIC23350 device is
available in the
“MIC23350 Data Sheet” .
FIGURE 1-1: Typical MIC23350 Step-Down Application.
SW
PG
V
IN
EN
V
OUT
P
GND
A
GND
V
OUT
EN
V
SEL1
V
SEL
2
PV
IN
SV
IN
P
GOOD
1 µ F
47 µ F
V
SEL1
V
SEL
2
0.35 µ H
C3
C1
L1
C2
22 µ F
Program
V
OUT