Micrel Semiconductor, Inc.
San Jose, CA 95131
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DC/DC Buck Controllers step down 3.3V supplies.
MIC2183 and MIC2184 convert 3.3V to lower levels, such as 2.5V, 1.8V and 1.5V, for use as auxiliary supply voltages. Both devices have input voltage range of 2.9 to 14V, and built-in high-power output drivers capable of driving large MOSFETs. Switching frequency can be 400kHz or 200kHz, depending on efficiency and noise spectrum requirements of power supply. Both are optimized for low voltage...
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DC/DC Controllers convert telecom line voltages to logic levels.
MIC9130 and MIC9131 can convert 48V input to 3.3V output at 20A with up to 92% efficiency. They have built-in high-voltage start-up circuitry that allows devices to be connected directly to telecom lines, which are subject to large voltage transients. Both devices have soft-start functions to reduce in-rush current during start-up, powerful output driver that allows them to drive large external...
Read More »EL Lamp Driver replaces LEDs for backlighting.
MIC4826 and MIC4827 electroluminescent lamp driver ICs independently set boost converter frequency and EL lamp frequency. Lamps accept 1.8 to 5.5 V input range, allowing direct operation from two-cell Alkaline/NiCad/NiMH or one-cell Li Ion batteries. MIC4826/7 are housed in MSOP-8 packages, require 6 external passive components, and have peak-to-peak regulated AC outputs voltages of 160V and 180V...
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