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MIC23159

Dual 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: Adjustable (down to 1.0V)
  • Two independent 2A outputs
  • Up to 94% peak efficiency
  • 83% typical efficiency at 1mA
  • Two independent Power Good Indicators
  • Independent programmable Soft Start
  • 45µA typical quiescent current
  • 3MHz PWM operation in continuous conduction mode
  • Ultra-fast transient response
  • Fully integrated MOSFET switches
  • Output pre-bias safe
  • 0.01µA shutdown current
  • Thermal shutdown and current limit protection
  • 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 MIC23158/9 is a high efficiency 3MHz dual 2A synchronous buck regulator with HyperLight Load® mode, Power Good output indicator, and programmable soft start. The MIC23159 also provides an auto discharge feature that switches in a 225Ω pull down circuit on its output to discharge the output capacitor when disabled. HyperLight Load® provides very high efficiency at light loads and ultra fast transient response which makes the MIC23158/9 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 MIC23158/9 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 MIC23158/9 has a very low quiescent current of 45µA and achieves a peak efficiency of 94% in continuous conduction mode. In discontinuous conduction mode, the MIC23158/9 can achieve 83% efficiency at 1mA.

Additional Features
    • Input voltage: 2.7V to 5.5V
    • Output voltage: Adjustable (down to 1.0V)
    • Two independent 2A outputs
    • Up to 94% peak efficiency
    • 83% typical efficiency at 1mA
    • Two independent Power Good Indicators
    • Independent programmable Soft Start
    • 45µA typical quiescent current
    • 3MHz PWM operation in continuous conduction mode
    • Ultra-fast transient response
    • Fully integrated MOSFET switches
    • Output pre-bias safe
    • 0.01µA shutdown current
    • Thermal shutdown and current limit protection
    • Junction temperature range of -40°C to +125°C
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
2
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
1500
Quiescent Current (mA) typ
45
Switching Frequency (kHz)
3000
Synchronous Rectifier
Yes
Operating Temp Range
-40 to 125
Vfb (V)
0.62
Duty Cycle Max (%)
90
SHUTDOWN Current (µA) (Typ)
0.1
Light Load Efficiency Mode
Yes

Documents

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Applications Source code

09/14/2017
362KB

Development Environment

  • Demo & Evaluation Boards
  • Application Examples
Demo & Evaluation Boards
MIC23158/9 3MHz Dual 2A Buck Eval. Board
MIC23158/9 3MHz Dual 2A Buck Eval. Board ( ADM00829 )

The MIC23158/9 Evaluation Board has been developed to evaluate the capabilities of the MIC23158/9 family of devices. The board is populated with the MIC23159 device and it’s set for the following voltages:
•Regulator 1: 1.8V.
•Regulator 2: 1.5V.
The evaluation board can be easily modified by interchanging the MIC23159 device with MIC23158.​
The...

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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
MIC23159YML-TR
0.031400
0.664302
20
VQFN
4x3x0.9mm
NiPdAu
e4
MIC23159YML-T5
0.031400
0.664302
20
VQFN
4x3x0.9mm
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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