MIC2184 Micrel, Inc.
MIC2184 Low Voltage Buck PWM Control IC General Description Micrel’s MIC2184 is a high efficiency PWM buck control IC.
With its wide input voltage range of 2.
9V to 14V, the MIC2184 can be used to efficiently step voltages down in 1- or 2-cell Li Ion battery powered applications, as well as in fixed 3.
3V, 5V, or 12V systems.
Efficiencies over 90% are achievable over a wide range of load conditions with the MIC2184’s PWM control scheme.
The operating frequency can be divided by two by raising the FREQ/2 pin to VDD.
This allows the user to optimize efficiency versus board space.
It also allows the MIC2184 to be externally synchronized to frequencies below its nominal 400K...

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