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MIC2156 Datasheet PWM Synchronous Buck Controller

Manufacturer: Micrel Semiconductor

Download the MIC2156 datasheet PDF. This datasheet also includes the MIC2155 variant, as both parts are published together in a single manufacturer document.

📥 Download Datasheet

Note: The manufacturer provides a single datasheet file (MIC2155_MicrelSemiconductor.pdf) that lists specifications for multiple related part numbers.

Datasheet Details

Part number MIC2156
Manufacturer Micrel Semiconductor
File Size 575.62 KB
Description PWM Synchronous Buck Controller
Download MIC2156 Download (PDF)

General Description

The MIC2155 and MIC2156 are a family of two-phase, single-output synchronous buck control ICs featuring small size, high efficiency, and a high level of flexibility.

The ICs implement a 500kHz (MIC2155) and 300kHz (MIC2156) voltage mode PWM control, with the outputs switching 180° out of phase.

The result of the out-of-phase operation is 1MHz (or 600kHz) input ripple with ripple current cancellation, minimizing the required input filter capacitance.

Overview

MIC2155/2156 www.DataSheet4U.com Two-Phase, Single-Output, PWM Synchronous Buck Control IC.

Key Features

  • Synchronous buck control ICs with outputs switching 180° out-of-phase.
  • Remote sensing with internal differential amplifier.
  • 4.5V to 14.5V input voltage range.
  • Adjustable output voltages down to 0.7V.
  • 1% output voltage accuracy.
  • Starts up into a pre-biased output.
  • 500kHz PWM operation (MIC2155).
  • 300kHz PWM operation (MIC2156).
  • Adaptive gate drive allows efficiencies over 95%.
  • Adjustable current limit with n.

More Datasheets from Micrel Semiconductor

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