30 min

Master voltage regulation with MIC24045 and STM32F417ZG


MIC24045 click with UNI-DS v8

Published Jul 29, 2023

Click board™

MIC24045 click

Development board



NECTO Studio



Perfect portable power solution that transforms voltage levels with precision to ensure optimal performance for a wide range of electronic devices



Hardware Overview

How does it work?

MIC24045 Click is based on the MIC24045, an I2C-programmable, high-efficiency, wide input range, 5A synchronous step-down regulator from Microchip. This Click board™ is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over the I2C interface with additional functionality provided by the following pins on the mikroBUS™ line: RST, INT. The MIC24045 is a digitally programmable, 5A valley current-mode controlled regulator

featuring an input voltage range from 4.5V to 19V.  The MIC24045 is ideally suited for multiple voltage rail application environments, typically found in computing and telecommunication systems. The MIC24045 has thermal shutdown protection that prevents operation at excessive temperatures. The MIC24045 features a Thermal Warning flag readable through the I2C interface (register polling is needed). The Thermal Warning flag signals the approach of the thermal shutdown so that

appropriate system-level countermeasures can be undertaken. This Click board™ is designed to lower the voltage on the input from 4.5V-19V to 0.64V-5.25V. The same voltage is used for powering the MCP24045 IC (TB1 and TB2 connectors). The voltage on the mikroBUS™ I2C pin can be either 3.3V or 5V, depending on the jumper position. The selected mikroBUS™ power supply is used only for the pull-ups on I2C lines.

MIC24045 click hardware overview image

Features overview

Development board

UNI-DS v8 is a development board specially designed for the needs of rapid development of embedded applications. It supports a wide range of microcontrollers, such as different STM32, Kinetis, TIVA, CEC, MSP, PIC, dsPIC, PIC32, and AVR MCUs regardless of their number of pins, and a broad set of unique functions, such as the first-ever embedded debugger/programmer over WiFi. The development board is well organized and designed so that the end-user has all the necessary elements, such as switches, buttons, indicators, connectors, and others, in one place. Thanks to innovative manufacturing technology, UNI-DS v8 provides a fluid and immersive working experience, allowing access anywhere and under any

circumstances at any time. Each part of the UNI-DS v8 development board contains the components necessary for the most efficient operation of the same board. An advanced integrated CODEGRIP programmer/debugger module offers many valuable programming/debugging options, including support for JTAG, SWD, and SWO Trace (Single Wire Output)), and seamless integration with the Mikroe software environment. Besides, it also includes a clean and regulated power supply module for the development board. It can use a wide range of external power sources, including a battery, an external 12V power supply, and a power source via the USB Type-C (USB-C) connector. Communication options such as USB-UART, USB

HOST/DEVICE, CAN (on the MCU card, if supported), and Ethernet is also included. In addition, it also has the well-established mikroBUS™ standard, a standardized socket for the MCU card (SiBRAIN standard), and two display options for the TFT board line of products and character-based LCD. UNI-DS v8 is an integral part of the Mikroe ecosystem for rapid development. Natively supported by Mikroe software tools, it covers many aspects of prototyping and development thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.

UNI-DS v8 horizontal image

Microcontroller Overview

MCU Card / MCU



8th Generation


ARM Cortex-M4

MCU Memory (KB)


Silicon Vendor


Pin count


RAM (Bytes)


Used MCU Pins

mikroBUS™ mapper

Chip Enable
Power Supply
Power Good Indicator
I2C Clock
I2C Data
Power Supply

Take a closer look


MIC24045 click Schematic schematic

Step by step

Project assembly

Fusion for PIC v8 front image hardware assembly

Start by selecting your development board and Click board™. Begin with the UNI-DS v8 as your development board.

Fusion for PIC v8 front image hardware assembly
GNSS2 Click front image hardware assembly
SiBRAIN for PIC32MZ1024EFK144 front image hardware assembly
GNSS2 Click complete accessories setup image hardware assembly
v8 SiBRAIN Access MB 1 - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
NECTO Compiler Selection Step Image hardware assembly
NECTO Output Selection Step Image hardware assembly
Necto image step 6 hardware assembly
Necto image step 7 hardware assembly
Necto image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Necto PreFlash Image hardware assembly

Track your results in real time

Application Output

After pressing the "FLASH" button on the left-side panel, it is necessary to open the UART terminal to display the achieved results. By clicking on the Tools icon in the right-hand panel, multiple different functions are displayed, among which is the UART Terminal. Click on the offered "UART Terminal" icon.

UART Application Output Step 1

Once the UART terminal is opened, the window takes on a new form. At the top of the tab are two buttons, one for adjusting the parameters of the UART terminal and the other for connecting the UART terminal. The tab's lower part is reserved for displaying the achieved results. Before connecting, the terminal has a Disconnected status, indicating that the terminal is not yet active. Before connecting, it is necessary to check the set parameters of the UART terminal. Click on the "OPTIONS" button.

UART Application Output Step 2

In the newly opened UART Terminal Options field, we check if the terminal settings are correct, such as the set port and the Baud rate of UART communication. If the data is not displayed properly, it is possible that the Baud rate value is not set correctly and needs to be adjusted to 115200. If all the parameters are set correctly, click on "CONFIGURE".

UART Application Output Step 3

The next step is to click on the "CONNECT" button, after which the terminal status changes from Disconnected to Connected in green, and the data is displayed in the Received data field.

UART Application Output Step 4

Software Support

Library Description

This library contains API for MIC24045 Click driver.

Key functions:

  • mic24045_get_vout - Get voltage

  • mic24045_set_vout_decimal - Set voltage decimal

  • mic24045_get_status - Get status function

Open Source

Code example

This example can be found in NECTO Studio. Feel free to download the code, or you can copy the code below.

 * \file 
 * \brief Mic24045 Click example
 * # Description
 * This example demonstrates the use of MIC24045 click board.
 * The demo application is composed of two sections :
 * ## Application Init 
 * Initializes the driver and enables the voltage output.
 * ## Application Task  
 * Changes the voltage output every 2 seconds and displays the current set value
 * on the USB UART.
 * \author MikroE Team
// ------------------------------------------------------------------- INCLUDES

#include "board.h"
#include "log.h"
#include "mic24045.h"

// ------------------------------------------------------------------ VARIABLES

static mic24045_t mic24045;
static log_t logger;
static float current_voltage;

// ------------------------------------------------------ APPLICATION FUNCTIONS

void application_init ( void )
    log_cfg_t log_cfg;
    mic24045_cfg_t cfg;

     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, "---- Application Init ----" );

    //  Click initialization.

    mic24045_cfg_setup( &cfg );
    MIC24045_MAP_MIKROBUS( cfg, MIKROBUS_1 );
    mic24045_init( &mic24045, &cfg );
    mic24045_enable( &mic24045 );
    log_printf( &logger, " Output enabled!\r\n" );
    Delay_ms( 100 );

void application_task ( void )
    for ( uint16_t cnt = MIC24045_MIN_VOUT_DEC; cnt <= MIC24045_MAX_VOUT_DEC; cnt += 15 )
        mic24045_set_vout_decimal( &mic24045, cnt );
        Delay_ms( 500 );
        current_voltage = mic24045_get_vout( &mic24045 );
        log_printf( &logger, " VOUT:    ~%.3f V\r\n", current_voltage );
        log_printf( &logger, "------------------\r\n" );
        Delay_ms( 1500 );

void main ( void )
    application_init( );

    for ( ; ; )
        application_task( );

// ------------------------------------------------------------------------ END

Additional Support