The MIC24045-2ZYFL-TR is an I2C-programmable, high-efficiency, wide input range, 5A synchronous step-down regulator. The MIC24045-2ZYFL-TR is perfectly suited for multiple voltage rail application environments, typically found in computing and telecommunication systems. In the MIC24045-2ZYFL-TR various parameters can be programmed via I2C, such as output voltage, switching frequency, soft-start slope, margining, current limit values and start-up delays. The wide switching frequency adjustment range, valley-current mode control technique, high-performance error amplifier,and external compensation allow for the best trade-offs between high efficiency and the smallest possible solution size. The MIC24045-2ZYFL-TR supports extensive diagnostics and status information through I2C.The MIC24045-2ZYFL-TR pin-out is compatible with the MIC24046 pin-strapping programmable regulator pin-out, such that I2C-based implementations can be easily converted into pin-programmable ones. The MIC24045-2ZYFL-TR is available in thermally-efficient, space-saving 20-pin 3 mm x 3 mm FQFN package with an operating junction temperature range from -40 C to +125 C.
Feature
- 4.5V to 19V input voltage range
- 5A (maximum) output current
- I2C Programmable Output Voltage:
- 0.64V to 5.25V in 5 mV, 10 mV, 30 mV and50 mV Steps
- High Efficiency (>95%)
- I2C programmability of:
- Soft-Start: 0.16, 0.38, 0.76 and 1.5V/ms ramprates
- Switching Frequency: 310 kHz, 400 kHz,500 kHz, 570 kHz, 660 kHz, 780 kHz, 1 MHz,1.2 MHz
- Current Limits for 2A, 3A, 4A and 5A loads
- ±1% output voltage accuracy
- Supports safe start-up with pre-biased output
- Internal soft-start and thermal shutdown protection
- Hiccup-mode short-circuit protection
- Available in a 20-pin 3mm x 3mm QFN package
- -40°C to +125°C junction temperature range
