Microchip Technology MIC24045 I²C Programmable Step-Down Converter
Microchip Technology MIC24045 is offered as a high-efficiency, I²C Programmable, 5A Synchronous Step-Down Converter with a 4.5V to 19V input voltage range. Designers can program various parameters such as output voltage, switching frequency, margining, soft-start slope, current limit values, and start-up delays via I²C. The MIC24045 also supports status information and extensive diagnostics through I²C.
MIC24045's wide switching frequency adjustment range, valley current-mode control technique, high-performance error amplifier, and external compensation provide a winning combination of high efficiency and small solution size. The MIC24045 is housed in a thermally-efficient, 20-pin 3mm x 3mm FQFN package with an -40°C to +125°C operating junction temperature range. The MIC24045 is ideally suited for multiple-voltage rail application environments found in telecommunication and computing systems.
Features
- 4.5V to 19V Input Voltage Range
- 5A (maximum) Output Current
- I²C Programmable Output Voltage
- 0.64V to 5.25V in 5mV, 10mV, 30mV and 50mV steps
- High Efficiency (>95%)
- I²C Programmability of
- Soft-Start 0.16, 0.38, 0.76 and 1.5V/ms ramp rates
- Switching Frequency 310kHz, 400kHz, 500kHz, 570kHz, 660kHz, 780kHz, 1MHz, 1.2MHz
- Current Limits for 2A, 3A, 4A and 5A loads
- Output Voltage Margining -5%, +5%
- Start-up delays 0ms to 10ms
- ±1% Output Voltage Accuracy Over Temperature (0.64V to 1.95V)
- Supports Safe Start-Up with Pre-Biased Output
- Extensive Diagnostics through I²C Interface
Applications
- Servers, Data Storage, Routers, and Base Stations
- FPGAs, DSP, and Low-Voltage ASIC Power
Mikroe Click Boards
Mikroe Wired Click Boards
Add wired connectivity for a variety of applications.
Functional Block Diagram
Typical Application
Published: 2016-09-15
| Updated: 2022-03-11