MIC4782

The Micrel MIC4782 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A output current. The MIC4782 operates at 1.8MHz. A proprietary internal compensation technique allows a closed loop bandwidth of over 200kHz.

The low on-resistance internal P-Channel MOSFET of the MIC4782 allows efficiencies over 92%, reduces external components count and eliminates the need for an expensive current sense resistor.

The MIC4782 operates from 3.0V to 6.0V input and the output can be adjusted down to 0.6V. The device can operate with a maximum duty cycle of 100% for use in low-dropout conditions.

The MIC4782 is available in the exposed pad 16-pin 3mm x 3mm MLF® with a junction operating range from -20°C to +125°C

Features
  • 3.0V to 6.0V supply voltage
  • 1.8MHz PWM mode
  • 2A dual output
  • Greater than 92% efficiency
  • 100% maximum duty cycle
  • Adjustable output voltage option down to 0.6V
  • Ultra-fast transient response
  • Ultra-small external components
  • Stable with a 1µH inductor and a 4.7µF output capacitor
  • Fully integrated 2A MOSFET switches
  • Micro-power shutdown
  • Thermal shutdown and current limit protection
  • Available in a 3mm — 3mm 16-pin MLF®
  • -20°C to +125°C junction temperature range
Parameter
Parameter Name Value Value
Regulator Type Step Down (Buck) Step Down (Buck)
# of Outputs 2 2
Input Voltage Range Min (V) 3 3
Input Voltage Range Max (V) 6 6
Output Voltage Range Min (V) 0.607 0.607
Output Voltage Range Max (V) 6 6
Switching Frequency (kHz) 1800 1800
Operating Temp Range -40 to 125 -40 to 125
Vfb (V) 0.607 0.607
Duty Cycle Max (%) 1 1
SHUTDOWN Current (µA) (Typ) 1.6 1.6
Documents
MIC4782 Data SheetData Sheets11/05/2015660KB
MIC4782 Evaluation BoardUser Guides11/11/2015239KB
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC4782YML-TR0.0213000.80170016VQFN3x3x0.9mmNiPdAue4
MIC4782 Data Sheet MIC4782
MIC4782 Evaluation Board MIC4782