MIC24045 click

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  • MIKROE-2574
  • MIKROE-2574
MIC24045 click  carries  MIC24045  I2C-programmable, high-efficiency, wide input... more
Product information "MIC24045 click"

MIC24045 click carries MIC24045 I2C-programmable, high-efficiency, wide input range, 5A synchronous step-down regulator from Microchip. The click is designed to run on either 3.3V or 5V power supply. It communicates with the target microcontroller over I2C interface with additional functionality provided by the following pins on the mikroBUS™ line: RST, INT.

MIC24045 regulator features

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 perfectly suited for multiple voltage rail application environments, typically found in computing and telecommunication systems.

Thermal Warning and Thermal Shutdown

The MIC24045 has a thermal shutdown protection that prevents operation at excessive temperature. The thermal shutdown threshold is typically set at +160°C with a hysteresis of +25°C.

The MIC24045 features a Thermal Warning flag that is readable through the I2C interface (register polling is needed). The Thermal Warning flag signals the approaching of thermal shutdown, so that appropriate system-level countermeasures can be undertaken.

How it works

The click 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.


Type Boost
Applications Servers, Data Storage, Routers and Base Stations, FPGAs, DSP and Low-Voltage ASIC Power
MCU MIC24045 regulator
Key Features 4.5V to 19V Input Voltage Range, 5A (maximum) Output Current, Switching Frequency: 310 kHz, 400 kHz, 500 kHz, 570 kHz, 660 kHz, 780 kHz, 1 MHz, 1.2 MHz
Interface I2C,GPIO
Input Voltage 3.3V or 5V
Compatibility mikroBUS
Click board size M (42.9 x 25.4 mm)

Pinout diagram

This table shows how the pinout on MIC24045 click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

NotesPinMikrobus logo.pngPinNotes
  NC 1 AN PWM 16 NC  
Precision Enable Input Pin ENABLE 2 RST INT 15 PG Power Good Open-Drain Output Pin
  NC 3 CS TX 14 NC  
  NC 4 SCK RX 13 NC  
  NC 5 MISO SCL 12 I2C SCL I2C Clock Input Pin
  NC 6 MOSI SDA 11 I2C SDA I2C Data Input/Output Pin
Power supply +3.3V 7 3.3V 5V 10 +5V Power supply
Ground GND 8 GND GND 9 GND Ground

Maximum ratings

Input Range 4.5   19 V
Externally Applied Analog and Drivers Supply Voltage 4.5   5.5 V
Enable Voltage (VEN)   VDDA   V
Power-Good (PG) Pull-up Voltage (VPU_PG) 0   5.5 V
Output Current   5   A
Junction Temperature -40   120 °C


Code examples for MIC24045 click, written for MikroElektronika hardware and compilers are available on Libstock.

Code snippet

The following code snippet calls initialization functions, and then slowly decrements the voltage from maximum value down to the minimum.

01 void main()
02 {
03    system_init();
04    mic_24045_init(0x50);
05    Delay_ms (100);
06    i = 21;
07    while (i)
08    {
09            write_1 = i*0.25;
10            mic_24045_write_vout (write_1);
11            GPIOC_ODR = 0x04;        /* Sets EN pin to 1 */
12            Delay_ms (1000);
14            read_2 = mic_24045_read_vout ();
15            FloatToStr (read_2, &uart_text);
17            if (read_2 > 1)
18               uart_text [5] = 0;
20            UART_Write_Text ("rn");
21            UART_Write_Text (uart_text);
23         GPIOC_ODR = 0x00;
24            Delay_ms (1000);
25         i--;
26    }
27 }


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