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MIC23451

3MHz, 2A Triple Synchronous Buck Regulators w

Status: In Production

Features:

  • Input voltage: 2.7V to 5.5V
  • Three independent 2A outputs
  • Up to 93% peak efficiency
  • 81% typical efficiency at 1mA
  • Three independent Power Good Indicators
  • 24µA typical quiescent current (per channel)
  • 3MHz PWM operation in continuous mode
  • Ultra-fast transient response
  • Low voltage output ripple
  • 30mVpp ripple in HyperLight Load® mode
  • 5mV output voltage ripple in full PWM mode
  • Fully integrated MOSFET switches
  • 0.1µA shutdown current
  • Thermal shutdown and current limit protection
  • Output voltage as low as 1.0V
  • 26-pin 4mm x 4mm QFN package
  • Junction temperature range of -40°C to +125°C
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC23451 is a high-efficiency, 3MHz, triple 2A, synchronous buck regulator with HyperLight Load® mode. HyperLight Load provides very-high efficiency at light loads and ultra-fast transient response, which is ideal 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 4mm x 4mm QFN package saves board space and requires only five external components for each channel.

The MIC23451 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 that is less than 1mm height.

The MIC23451 has a very-low quiescent current of 24µA each channel and achieves as high as 81% efficiency at 1mA. At higher loads, the MIC23451 provides a constant switching frequency around 3MHz while achieving peak efficiencies up to 93%.

The MIC23451 is available in a 26-pin 4mm x 4mm QFN package with an operating junction temperature range from -40°C to +125°C.

Additional Features
    • Input voltage: 2.7V to 5.5V
    • Three independent 2A outputs
    • Up to 93% peak efficiency
    • 81% typical efficiency at 1mA
    • Three independent Power Good Indicators
    • 24µA typical quiescent current (per channel)
    • 3MHz PWM operation in continuous mode
    • Ultra-fast transient response
    • Low voltage output ripple
      • 30mVpp ripple in HyperLight Load® mode
      • 5mV output voltage ripple in full PWM mode
    • Fully integrated MOSFET switches
    • 0.1µA shutdown current
    • Thermal shutdown and current limit protection
    • Output voltage as low as 1.0V
    • 26-pin 4mm x 4mm QFN package
    • Junction temperature range of -40°C to +125°C
Parametrics
Name
Value
Regulator Type
Multi-Output
# of Outputs
3
Input Voltage Range Min (V)
2.7
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
0.62
Output Voltage Range Max (V)
3.3
Output Current (mA) max
3000
Quiescent Current (mA) typ
65
Switching Frequency (kHz)
3000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.62
Duty Cycle Max (%)
0.9
SHUTDOWN Current (µA) (Typ)
0.01
Light Load Efficiency Mode
Yes

Documents

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Applications Source code

09/14/2017
362KB

User Guides

Development Environment

  • Demo & Evaluation Boards
  • Application Examples
Demo & Evaluation Boards
MIC23451-AAAYFL Evaluation Board
MIC23451-AAAYFL Evaluation Board ( MIC23451-AAAYFL-EV )

This board allows the customer to evaluate the MIC23451, a fully-integrated, triple-output, 2A, 3MHz switching regulator that features HyperLight Load® mode and Power Good output indicators. The MIC23451 is highly efficient throughout the output current range, drawing just 24μA of quiescent current for each channel in operation. The tiny 4mm × 4mm DFN package saves precious board space and...

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC23451-AAAYFL-TR
0.037500
0.656502
26
VQFN
4x4x0.9mm
NiPdAu
e4
MIC23451-AAAYFL-T5
0.037500
0.656502
26
VQFN
4x4x0.9mm
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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