The Micrel MIC2194 is a 400kHz SO-8 package PWM buck control IC which can efficiently step down voltages in 3.3V, 5V and 12V systems as well as 1- or 2-cell Li Ion battery powered applications
Micrel's MIC2194 is a high efficiency PWM buck control IC housed in the SO-8 package. Its architecture allows it to be configured as a buck or a buck-boost converter, saving valuable board space with its low pin-count design.
The device features a 400kHz oscillator frequency and 2Ω output drivers capable of driving large external MOSFETs. It supports a maximum duty cycle of 100% and includes protection features such as front edge blanking, cycle-by-cycle current limiting, and frequency foldback short circuit protection.
| Input Voltage Range | 2.9V to 14V |
|---|---|
| Oscillator Frequency | 400kHz |
| Output Driver Impedance | 2Ω |
| Maximum Duty Cycle | 100% |
| Shutdown Current | 0.5µA |
| Package Type | 8-lead SOIC |
| Feedback Voltage Reference | 1.245V |
It allows for efficient voltage stepping down in 3.3V, 5V, and 12V systems as well as 1- or 2-cell Li Ion battery powered applications.
Yes, its flexible architecture allows it to be configured as a buck or a buck-boost converter.
When the enable pin is low, the quiescent current reduces to under 0.5 µA.