MIC2194

Micrel's MIC2194 is a high efficiency PWM buck control IC housed in the SO-8 package. Its 2.9V to 14V input voltage range allows it to efficiently step down voltages in 3.3V, 5V, and 12V systems as well as 1- or 2-cell Li-Ion battery powered applications. The flexible architecture of the MIC2194 allows for it to be configured as a buck or a buck-boost converter.

The MIC2194 solution saves valuable board space. The device is housed in the space-saving SO-8 package, whose low pin-count minimizes external components. Its 400kHz PWM operation allows a small inductor and small output capacitors to be used. The MIC2194 can implement all-ceramic capacitor solutions.

The MIC2194 drives a high-side P-Channel MOSFET. A low output driver impedance of 2ω allows the MIC2194 to drive large external MOSFETs to generate a wide range of output currents. The MIC2194 can achieve maximum duty cycles of 100%, which can be useful in low headroom applications.

The MIC2194 is available in an 8-pin SOIC package with a junction temperature range of -40°C to +125°C.

Features
  • 2.9V to 14V input voltage range
  • 400kHz oscillator frequency
  • PWM current mode control
  • 2ω output drivers
  • 100% maximum duty cycle
  • 0.5µA micro-power shutdown
  • Programmable UVLO
  • Front edge blanking
  • Cycle-by-cycle current limiting
  • Frequency foldback short circuit protection
  • 8-lead SOIC package
Parameter
Parameter Name Value Value
Supported Topologies Async. Buck Async. Buck
Supported Outputs 1 1
Minimum Input Voltage (V) 2.9 2.9
Maximum Input Voltage (V) 14 14
Typical Tolerance (%) ±1 ±1
Duty Cycle Max (%) 1 1
Operating Frequency (Hz) 400K 400K
Internal Voltage Bias True True
Enable Pin True True
Current Limit / Short Circuit Protection True True
Operating Supply Current (mA) 1 1
Iq Off (µA) 0.5 0.5
Package 8/SOIC 8/SOIC
Documents
MIC2194 - 400kHz SO-8 Buck Control ICData Sheets11/05/201561KB
Micrel AN 105 - Troubleshooting Switching Power SuppliesAppNote10/02/2015177KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC2194YM8SOIC-40C to +125CTUBE**********
MIC2194YM-TR8SOIC-40C to +125CT/R2.001.671.521.471.45
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2194YM0.0750000.1632658SOIC3.90mm(.150in)NiPdAue4
MIC2194YM-TR0.0750000.2500008SOIC3.90mm(.150in)NiPdAue4
MIC2194 - 400kHz SO-8 Buck Control IC MIC2194
Micrel AN 105 MIC2194