MIC4724

The Micrel MIC4724 is a high efficiency PWM buck (step-down) regulator that provides up to 3A of output current. The MIC4724 operates at 2.0MHz and has proprietary internal compensation that allows a closed loop bandwidth of over 200kHz.

The low on-resistance internal p-channel MOSFET of the MIC4724 allows efficiencies over 92%, reduces external components count and eliminates the need for an expensive current sense resistor.

The MIC4724 operates from 3.0V to 6.0V input and the output can be adjusted down to 1V. The devices can operate with a maximum duty cycle of 100% for use in low-dropout conditions.

The MIC4724 is available in 10-pin ePad MSOP package with a junction operating range from -40°C to +125°C.

Features
  • 3.0 to 6.0V supply voltage
  • 2.0MHz PWM mode
  • Output current to 3A
  • Up to 94% efficiency
  • 100% maximum duty cycle
  • Adjustable output voltage option down to 1V
  • Ultra-fast transient response
  • Ultra-small external components stable with a 1µH inductor and a 4.7µF output capacitor
  • Fully integrated 3A MOSFET switch
  • Micropower shutdown
  • Thermal shutdown and current limit protection
  • Pb-free 10-pin ePad MSOP 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) 3 3
Input Voltage Range Max (V) 6 6
Output Voltage Range Min (V) 1 1
Output Voltage Range Max (V) 5.5 5.5
Output Current (A) max 3 3
Quiescent Current (mA) typ 0.57 0.57
Switching Frequency (kHz) 2000 2000
Operating Temp Range -40 to 125 -40 to 125
Vfb (V) 1 1
Duty Cycle Max (%) 1 1
SHUTDOWN Current (µA) (Typ) 2 2
Documents
MIC4724 Data SheetData Sheets11/05/2015603KB
相关开发工具
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC4724YMME-TR0.0248000.20614810MSOP3x3x1.0mmMatte Tine3
MIC4724YMME0.0248000.13560010MSOP3x3x1.0mmMatte Tine3
MIC4724 Data Sheet MIC4724