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MIC2267

USB Power Maximizer

Status: In Production

Features:

  • Input voltage range: 3.0V to 5.5V
  • Output voltage adjustable down to 1.0V
  • Up to 96% efficiency at 500mA output
  • Efficiency <90% across a broad load range
  • Fast transient response
  • Adjustable frequency from 400kHz to 1.5MHz
  • Adjustable input current limiting 100mA to over 1A
  • 100% maximum duty cycle
  • Fully integrated MOSFET switches
  • Micropower shutdown
  • Thermal shutdown and output current limit protection
  • Junction temperature range: -40°C to +125°C
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC2267 is a USB Power Maximizer which transfers the maximum power from the limited USB current source by shaping the input current limit profile. It incorporates a high efficiency, integrated synchronous step down regulator. Internal 150mΩ switches and adjustable operating frequency allows the MIC2267 to achieve greater than 90% efficiency across a broad load range. It replaces the USB current limit switch, 5V buck regulator and minimizes capacitance for many USB applications. The adjustable frequency control can be utilized to move harmonics away from sensitive frequency bands.

The MIC2267 allows the input current limit profile to be shaped for various applications. With a current mode control with external compensation, the MIC2267 transient response can be optimized over load and output capacitance making it highly flexible for many applications

Additional features include 1µA shutdown current, output current limit and thermal shutdown protection.

Additional Features
    • Input voltage range: 3.0V to 5.5V
    • Output voltage adjustable down to 1.0V
    • Up to 96% efficiency at 500mA output
    • Efficiency <90% across a broad load range
    • Fast transient response
    • Adjustable frequency from 400kHz to 1.5MHz
    • Adjustable input current limiting 100mA to over 1A
    • 100% maximum duty cycle
    • Fully integrated MOSFET switches
    • Micropower shutdown
    • Thermal shutdown and output current limit protection
    • Junction temperature range: -40°C to +125°C
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
3
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
1
Output Voltage Range Max (V)
5.5
Output Current (mA) max
2000
Quiescent Current (mA) typ
1
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
1
Duty Cycle Max (%)
1
SHUTDOWN Current (µA) (Typ)
1

Documents

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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
MIC2267YML-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.

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