Installation and Operation
2018 Microchip Technology Inc.
DS50002815A-page 10
2.2
FEATURES
The MIC23656 Evaluation Board has the following features:
• Input Voltage Range 2.4V to 5.5V
• 6A (maximum) Peak and 4.5A Continuous Output Current
• Multiple Faults Indication through I
2
C
• I
2
C Programmable:
- Output voltage: 0.6V-1.28V, 5 mV resolution
- Slew rate: 0.2 ms/V-3.2 ms/V
- Switching frequency: up to 2.5 MHz
- High-Side current limit: 3.5A-10A
- Enable delay: 0.25 ms-3 ms
- Output discharge when disabled
• High Efficiency (up to 95%)
• ±1.5% Output Voltage Accuracy Overline/load/temperature Range
• Safe Start-Up with Pre-Biased Output
• Typical 1.5 µA Shutdown Supply Current
• Low Dropout (100% Duty Cycle) Operation
• Ultra-Fast Transient Response
• I
2
C Control up to 3.4 MHz
• Latch-Off Thermal Shutdown Protection
• Latch-Off Current Limit Protection
• Power Good Open-Drain Output
2.3
GETTING STARTED
The MIC23656 Evaluation Board is fully assembled and tested to evaluate and
demonstrate the MIC23656 product. This board requires the use of external lab
supplies and a PC. The MIC23656 is offered in four different product options, depend-
ing on the default settings at power-up, prior to any I
2
C write operation. The differences
among the various product options are described in the MIC23656 data sheet. The
Evaluation Board carries the -HAYFT option, whose default output voltage is 1.0V. All
the device options may be fitted on the board, as is.
2.3.1
Power Input and Output Connection
2.3.1.1
POWERING THE MIC23656 EVALUATION BOARD
When the board is ready for evaluation, apply positive input voltage to the V
IN
terminal
and the corresponding return to the GND-IN terminal. The maximum input voltage
should not exceed 5.5V. An electronic load or resistive load can be used for evaluation.
Some electronic loads can sink the programmed current starting from very low output
voltage levels during start-up. For a more realistic start-up behavior evaluation, a resis-
tive load or constant resistance is recommended. Connect the positive voltage terminal
of the load to the V
OUT
terminal on the evaluation board and connect the negative or
return side of the load to the GND-OUT terminal. If changing the regulator parameters
is required or simply to monitor the part, make sure to connect the Micro-USB cable
between the Evaluation Board and the PC. Then, install the GUI according to
3. “GUI Installation and Operation”
and follow the indications in
2. “Installation and Operation”
for more extensive evaluation.
