MIC4720

The Micrel MIC4720 is a high efficiency PWM buck (step-down) regulator that provides up to 2A of output current. The MIC4720 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 MIC4720 allows efficiencies over 92%, reduces external components count and eliminates the need for an expensive current sense resistor.

The MIC4720 operates from 2.7V to 5.5V 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 MIC4720 is available in the exposed pad 12-pin 3mm x 3mm MLF® and 10-pin ePad MSOP package with a junction operating range from -40°C to +125°C.

产品特性
  • 2.7V to 5.5V supply voltage
  • 2.0MHz PWM mode
  • Output current to 2A
  • 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 2A MOSFET switch
  • Micropower shutdown
  • Thermal shutdown and current limit protection
  • Pb-free 12-pin 3mm x 3mm MLF® package
  • -40°C to +125°C junction temperature range
  • Pb-free 10-pin ePad MSOP package
技术参数
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
Output Current (A) max 2 2
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
文档资料
MIC4720 Data SheetData Sheets11/05/2015993KB
订购型号
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC4720YML-TR12VDFN-40C to +125CT/R**********
MIC4720YMME10MSOP-40C to +125CTUBE**********
相关开发工具
器件无铅环保信息
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC4720YMME-TR0.0248000.20614810MSOP3x3x1.0mmMatte Tine3
MIC4720YMME0.0248000.13560010MSOP3x3x1.0mmMatte Tine3
MIC4720YML-TR0.64430212VDFN3x3x0.9mmNiPdAue4
MIC4720 Data Sheet MIC4720