Micrel MIC2194
MIC2194 is a high efficiency PWM buck control IC housed in the SO-8 package. Its 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 flexible architecture of the MIC2194 allows for it to be configured as a buck or a buck-boost converter.GENERAL DESCRIPTION
Micrel’s The MIC2194 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 MIC2194 can implement allceramic capacitor solutions. The MIC2194 drives a high-side P-channel MOSFET. A low output driver impedance of 2Ω allows the MIC2194 to drive large external MOSFETs to generate a wide range of output currents. The MIC2194 can achieve maximum duty cycles of 100%, which can be useful in low headroom applications. The MIC2194 is available in an 8 pin SOIC package with a junction temperature range of –40°C to +125°C.FEATURES
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● 2.9V to 14V input voltage range 400kHz oscillator frequency PWM current mode control 2Ω output drivers 100% maximum duty cycle 0.5µA micro-power shutdown Programmable UVLO Front edge blanking Cycle-by-cycle current limiting Frequenc...