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MIC2194

14V, 400 KHz Synchronous Buck Controller with 100% Duty Cycle and Programmable UVLO

Status: In Production

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
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

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.

Additional 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
Parametrics
Name
Value
Supported Topologies
Async. Buck
Supported Outputs
1
Minimum Input Voltage (V)
2.9
Maximum Input Voltage (V)
14
Typical Tolerance (%)
±1
Duty Cycle Max (%)
1
Operating Frequency (Hz)
400K
Internal Voltage Bias
True
Enable Pin
True
Current Limit / Short Circuit Protection
True
Operating Supply Current (mA)
1
Iq Off (µA)
0.5
Package
8/SOIC

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC2194YM
0.075000
0.163265
8
SOIC
3.90mm(.150in)
NiPdAu
e4
MIC2194YM-TR
0.075000
0.250000
8
SOIC
3.90mm(.150in)
NiPdAu
e4
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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