MIC2206

The Micrel MIC2206 is a high efficiency 2MHz PWM synchronous buck (step-down) regulator that features a LowQ® LDO standby mode that draws only 18mA of quiescent current. The MIC2206 allows an ultra-low noise, small size, and high efficiency solution for portable power applications.

In PWM mode, the MIC2206 operates with a constant frequency 2MHz PWM control.  Under light load conditions, such as in system sleep or standby modes, the PWM switching operation can be disabled to reduce switching losses. In this light load LowQ® mode, the LDO maintains an output voltage of 1V and draws only 18µAmp of quiescent current.  The LDO mode of operation saves battery life while not introducing spurious noise and high ripple as experienced with pulse skipping or bursting mode regulators.

The MIC2206 operates from 2.7V to 5.5V input and features internal power MOSFETs that can supply up to 600mA output current in PWM mode. It can operate with a maximum duty cycle of 100% for use in low-dropout conditions.

The MIC2206 is available in the 3mm x 3mm MLF®-10L package with a junction operating range from -40°C to +125°C.

Features
  • 2.7V to 5.5V supply voltage
  • Light load LowQ® LDO mode
  • 18µA quiescent current
  • Low noise, 75µVrms
  • 2MHz PWM mode
  • Output current to 600mA
  • >95% efficiency
  • 100% maximum duty cycle
  • Output Voltage Scaling (1V output in LowQ® Mode)
  • Ultra-fast transient response
  • Stable with 1mF ceramic output capacitor
  • Fully integrated MOSFET switches
  • Micropower shutdown
  • Thermal shutdown and current limit protection
  • Pb-free 3mm x 3mm MLF®-10L package
  • -40°C to +125°C junction temperature range
Parameter
Parameter Name Value Value
Regulator Type Step Down (Buck) Step Down (Buck)
# of Outputs 1 1
Input Voltage Range Min (V) 2.7 2.7
Input Voltage Range Max (V) 5.5 5.5
Output Voltage Range Min (V) 1 1
Output Voltage Range Max (V) 5.5 5.5
Quiescent Current (mA) typ 0.57 0.57
Switching Frequency (kHz) 2000 2000
Synchronous Rectifier Yes Yes
Operating Temp Range -40 to 125 -40 to 125
Vfb (V) 1 1
Duty Cycle Max (%) 1 1
SHUTDOWN Current (µA) (Typ) 0.1 0.1
Documents
MIC2206 - 2MHz PWM Synchronous Buck Regulator with LOWQ Mode and Voltage ScalingData Sheets11/05/2015553KB
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC2206-1.8YML-TR0.64370210VDFN3x3x0.9mmNiPdAue4
MIC2206-83YML-TR0.64370210VDFN3x3x0.9mmNiPdAue4
MIC2206-9IYML-TR0.64370210VDFN3x3x0.9mmNiPdAue4
MIC2206-1.2YML-TR0.64370210VDFN3x3x0.9mmNiPdAue4
MIC2206 - 2MHz PWM Synchronous Buck Regulator with LOWQ Mode and Voltage Scaling MIC2206