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MIC23155

3MHz 2A HyperLight Load® Synchronous Buck Regulator w/Soft-Start and Power Good

Status: In Production

Features:

  • Input voltage: 2.7V to 5.5V
  • Output voltage: fixed or adjustable (down to 0.7V)
  • Up to 2A output current
  • Up to 94% peak efficiency
  • 85% typical efficiency at 1mA
  • Power Good output
  • Programmable soft-start
  • 22µA typical quiescent current
  • 3MHz PWM operation in continuous conduction mode
  • Ultra fast transient response
  • Active output discharge when disabled
  • Low output voltage ripple
  • Fully integrated MOSFET switches
  • 0.01µA shutdown current
  • Thermal shutdown and current limit protection
  • -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 MIC23155 is a high efficiency 3MHz 2A synchronous buck regulator with HyperLight Load® mode, Power Good output indicator, and programmable soft start. HyperLight Load® provides very high efficiency at light loads and ultra fast transient response which makes the MIC23155 perfectly suited for supplying processor core voltages. An additional benefit of this proprietary architecture is very low output ripple voltage throughout the entire load range with the use of small output capacitors.

The MIC23155 is designed for use with a very small inductor, down to 0.47µH, and an output capacitor as small as 2.2µF that enables a total solution size, less than 1mm in height.

The MIC23155 has a very low quiescent current of 22µA and achieves a peak efficiency of 94% in continuous conduction mode. In discontinuous conduction mode, the MIC23155 can achieve 85% efficiency at 1mA.

Additional Features
    • Input voltage: 2.7V to 5.5V
    • Output voltage: fixed or adjustable (down to 0.7V)
    • Up to 2A output current
    • Up to 94% peak efficiency
    • 85% typical efficiency at 1mA
    • Power Good output
    • Programmable soft-start
    • 22µA typical quiescent current
    • 3MHz PWM operation in continuous conduction mode
    • Ultra fast transient response
    • Active output discharge when disabled
    • Low output voltage ripple
    • Fully integrated MOSFET switches
    • 0.01µA shutdown current
    • 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)
0.62
Output Current (mA) max
2000
Quiescent Current (mA) typ
0.022
Switching Frequency (kHz)
3000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.62
Duty Cycle Max (%)
0.89
SHUTDOWN Current (µA) (Typ)
0.01
Light Load Efficiency Mode
Yes

Documents

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Applications Source code

09/14/2017
362KB

Software Library

Development Environment

  • Software Libraries
Software Libraries
Analog Simulation - MIC23155

The MIC23155 is a high efficiency 3MHz 2A synchronous buck regulator with HyperLight Load® mode, Power Good output indicator, and programmable soft start. HyperLight Load®provides very...

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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
MIC23155YMT-TR
0.015900
0.091458
10
UDFN
2.5x2.5x0.6mm
NiPdAu
e4
MIC23155-GYMT-TR
0.015900
0.091458
10
UDFN
2.5x2.5x0.6mm
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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