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MIC4721

2MHz 1.5A Buck Regulator

Status: In Production

Features:

  • 2.7V to 5.5V supply voltage
  • 2MHz PWM mode
  • Output current to 1.5A
  • Up to 94% efficiency
  • 100% maximum duty cycle
  • Adjustable output voltage option down to 1V
  • Ultra-fast transient response
  • Stable with a 1µH inductor and a 4.7µF output capacitor
  • Fully integrated 1.5A MOSFET switch
  • Micropower shutdown
  • Power Good pin
  • Thermal shutdown and current limit protection
  • Pb-free 10-pin MSOP package
  • -40°C to +125°C junction temperature range
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC4721 is a high efficiency PWM buck (step-down) regulators that provides up to 1.5A of output current. The MIC4721 operates at 2MHz and has proprietary internal compensation that allows a closed loop bandwidth of over 200kHz.

The low on-resistance internal p-channel MOSFET of the MIC4721 allows efficiencies up to 94%, reduces external components count and eliminates the need for an expensive current sense resistor.

The MIC4721 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 MIC4721 is available in the 10-pin MSOP package with a junction operating range from -40°C to +125°C.

Additional Features
    • 2.7V to 5.5V supply voltage
    • 2MHz PWM mode
    • Output current to 1.5A
    • Up to 94% efficiency
    • 100% maximum duty cycle
    • Adjustable output voltage option down to 1V
    • Ultra-fast transient response
    • Stable with a 1µH inductor and a 4.7µF output capacitor
    • Fully integrated 1.5A MOSFET switch
    • Micropower shutdown
    • Power Good pin
    • Thermal shutdown and current limit protection
    • Pb-free 10-pin MSOP package
    • -40°C to +125°C junction temperature range
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
2.7
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
1
Output Voltage Range Max (V)
5.5
Output Current (mA) max
1500
Quiescent Current (mA) typ
0.57
Switching Frequency (kHz)
2000
Operating Temp Range
-40 to 125
Vfb (V)
1
Duty Cycle Max (%)
100
SHUTDOWN Current (µA) (Typ)
2

Documents

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Data Sheets

  
814KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MIC4721YMM Evaluation Board
MIC4721YMM Evaluation Board ( MIC4721YMM-EV )

The MIC4721 is a high efficiency PWM buck (step-down) regulator that provides up to 1.5A of output current. The MIC4721 operates at 2MHz and has proprietary internal compensation that allows a closed loop bandwidth of over 200kHz. The low on-resistance internal P-Channel MOSFET of the MIC4721 allows efficiencies up to 94%, reduces external component count and eliminates the need for an expensive...

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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
MIC4721YMM
0.024500
0.135600
10
MSOP
3x3x1.0mm
NiPdAu
e4
MIC4721YMM-TR
0.024500
0.431180
10
MSOP
3x3x1.0mm
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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