Micrel MIC2193 400kHz SO-8 Synchronous Buck Control IC is a high efficiency PWM synchronous buck control IC from Micrel. It is housed in the space-saving SO-8 package. The 2.9V to 14V input voltage range allows it to efficiently step down voltages in 3.3V, 5V, and 12V systems as well as 1- or 2-cell Li Ion battery powered applications. The MIC2193 solution saves valuable board space. The device is housed in the space-saving SO-8 package, whose low pin-count minimizes external components. Its 400kHz PWM operation allows a small inductor and small output capacitors to be used. The MIC2193 can implement all- ceramic capacitor solutions.
The Micrel MIC2193 is a PWM synchronous buck control IC housed in an 8-pin SO-8 package. It features a 2.9V to 14V input voltage range and operates at a fixed 400kHz frequency, allowing for the use of small external components like inductors and ceramic capacitors.
The device drives both high-side P-channel and low-side N-channel MOSFETs, enabling a maximum duty cycle of 100% to support low headroom applications. Key protection features include front-edge blanking, cycle-by-cycle current limiting, and frequency foldback short circuit protection.
| Oscillator Frequency | 400kHz (Typ) |
|---|---|
| Input Voltage Range | 2.9V to 14V |
| Maximum Duty Cycle | 100% |
| Feedback Voltage Reference | 1.245V (Typ) |
| Package Type | 8-lead SOIC/SOP |
| Operating Temperature Range | -40°C to +125°C |
The typical oscillator frequency for the MIC2193 is 400kHz.
Yes, the device can achieve maximum duty cycles of 100%, which is useful in low headroom applications.
The MIC2193 is available in an 8-pin SOIC (SO-8) package.