MIC23350
EVALUATION BOARD
USER’S GUIDE
2018 Microchip Technology Inc.
DS50002833A-page 9
Chapter 2. Installation and Operation
2.1
INTRODUCTION
MIC23350 has been developed for applications suited for 2.4V to 5.5V input voltage
range, low shutdown and quiescent currents, 3A continuous output current. This makes
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.
FIGURE 2-1:
MIC23350 Step-Down Evaluation Board with Pin-Selectable Output Voltage.
2.2
FEATURES
The MIC23350 Evaluation Board has the following features:
• 2.4V to 5.5V Input Voltage Range
• 3A Continuous Output Current
• Programmable Voltage Output through V
SEL
Pins:
- 0.6V, 0.8V, 0.9V, 1.0V, 1.2V, 1.5V, 1.8V, 2.5V or 3.3V Output Voltage
• High Efficiency (up to 95%)
• ±1.5% Output Voltage Accuracy Over Line/Load/Temperature Range
• Supports Safe Start-up with Pre-Biased Output
• Output Discharge when Disabled (typically 10
)
• Typical 1.5 µA Shutdown Supply Current
• Low-Dropout Operation (100% duty cycle)
• Ultra-Fast Transient Response
• Latch-Off Thermal Shutdown Protection
• Hiccup Current Limit Protection
• Power Good Open-Drain Output
MIC23350
SW
V
OUT
PGND
AGND
PG
L1
0.35 µH
C7
0.1 µF
V
OUT
V
SEL2
V
SEL1
EN
SV
IN
PV
IN
C3
0.1 µF
V
IN
2.4V to 5.5V
C1
1 µF
C9
22 µF
C8
470 µF
V
IN
V
IN
V
IN
R3
1M
C5
47 µF
R7
100K
V
IN
PG (test point)
R12 10R
R1
49.9R
SW
(test point)
Loop Gain
Test Pins
