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Description: The MIC2169A is a high-efficiency, sim...


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MIC2169A General Description



The MIC2169A is a high-efficiency, simple to use 500kHz PWM synchronous buck control IC housed in a small MSOP-10 package. The MIC2169A allows compact DC/DC solutions with a minimal external component count and cost.

The MIC2169A operates from a 3V to 14.5V input, without the need of any additional bias voltage. The output voltage can be precisely regulated down to 0.8V. The adaptive all N‑Channel MOSFET drive scheme allows efficiencies over 95% across a wide load range.

The MIC2169A senses current across the high-side N-Channel MOSFET, eliminating the need for an expensive and lossy current-sense resistor. Current limit accuracy is maintained by a positive temperature coefficient that tracks the increasing RDS(ON) of the external MOSFET. Further cost and space are saved by the internal in-rush-current limiting digital soft-start.

The MIC2169A is available in a 10-pin MSOP package, with a wide junction operating range of –40°C to +125°C.

All support documentation can be found on Micrel’s web site at www.micrel.com.

MIC2169A datasheet

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