This datasheet introduces the features of the Micrel MIC4723 3A 2MHz integrated switch buck regulator
The MIC4723 is a high‑efficiency PWM buck regulator that delivers up to 3 A of output current. It operates at 2 MHz with internal compensation, providing a closed‑loop bandwidth over 200 kHz and efficiencies exceeding 92 %.
The device is available in 12‑pin 3 mm × 3 mm MLF and 10‑pin ePAD MSOP packages, supports an input range of 2.7 V‑5.5 V (3.0 V‑5.5 V for the MSOP version), and offers a 100 % maximum duty cycle for low‑dropout applications.
| Supply Voltage Range | 2.7 V to 5.5 V |
|---|---|
| Output Current | 3 A |
| Efficiency | up to 94 % |
| Switching Frequency | 2 MHz PWM mode |
| Maximum Duty Cycle | 100 % |
| Package Options | 12‑pin 3 mm × 3 mm MLF and 10‑pin ePAD MSOP |
| Junction Temperature Range | ‑40 °C to +125 °C |
The MIC4723 can deliver up to 3 A of output current.
The device can achieve up to 94 % efficiency.
The regulator supports a 100 % maximum duty cycle.