Microchip logo
  • All
  • Products
  • Documents
  • Applications Notes
product primary image

MIC4722

2.7MHz 3A Buck Regulator

Status: In Production

Features:

  • 2.7V to 5.5V supply voltage
  • 2.7MHz PWM mode
  • Output current to 3A
  • >92% efficiency
  • 100% maximum duty cycle
  • Adjustable output voltage option down to 1V
  • Ultra-fast transient response
  • Ultra-small external components Stable with a 0.47µH inductor and a 4.7µF output capacitor
  • Fully integrated 3A MOSFET switch
  • Micropower shutdown
  • Thermal shutdown and current limit protection
  • -40°C to +125°C junction temperature range
View More
Overview
Documents
Development Environment
RoHS Information
Buy Now

Device Overview

Summary

The MIC4722 is a high efficiency PWM buck (step-down) regulator that provides up to 3A of output current. The MIC4722 operates at 2.7MHz that makes it suitable for next generation XDSL modems requiring operating frequencies in excess of 2.4MHz and has proprietary internal compensation that allows a closed loop bandwidth of over 200kHz.

The low on-resistance internal p-channel MOSFET of the MIC4722 allows efficiencies over 92%, reduces external components count and eliminates the need for an expensive current sense resistor.

The MIC4722 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.

Additional Features
    • 2.7V to 5.5V supply voltage
    • 2.7MHz PWM mode
    • Output current to 3A
    • >92% efficiency
    • 100% maximum duty cycle
    • Adjustable output voltage option down to 1V
    • Ultra-fast transient response
    • Ultra-small external components Stable with a 0.47µH inductor and a 4.7µF output capacitor
    • Fully integrated 3A MOSFET switch
    • Micropower shutdown
    • Thermal shutdown and current limit protection
    • -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
3000
Quiescent Current (mA) typ
0.57
Switching Frequency (kHz)
2700
Operating Temp Range
-40 to 125
Vfb (V)
1
Duty Cycle Max (%)
1
SHUTDOWN Current (µA) (Typ)
2

Documents

Jump to:

Data Sheet

11/05/2015
574KB

Development tools data is currently unavailable.

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC4722YML-TR
0.023840
0.644302
12
VDFN
3x3x0.9mm
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.

Buy from the Microchip Store

Grid
View
Table
View
Filter:
Apply
Clear
Only show products with samples
Product
Leads
Package Type
Temp Range
Packing Media
5K Pricing
Buy