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MIC2183 - Low Voltage Synchronous Buck PWM Controller

General Description

Micrel’s MIC2183 is a high efficiency PWM synchronous buck control IC.

With its wide input voltage range of 2.9V to 14V, the MIC2183 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.

Key Features

  • an oscillator output, FreqOut, which can be used to implement a simple charge pump in low voltage.

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Datasheet Details

Part number MIC2183
Manufacturer Micrel Semiconductor
File Size 142.35 KB
Description Low Voltage Synchronous Buck PWM Controller
Datasheet download datasheet MIC2183 Datasheet

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MIC2183 Micrel, Inc. MIC2183 Low Voltage Synchronous Buck PWM Control IC General Description Micrel’s MIC2183 is a high efficiency PWM synchronous buck control IC. With its wide input voltage range of 2.9V to 14V, the MIC2183 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 MIC2183’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 MIC2183 to be externally synchronized to frequencies below its nominal 400KHz.