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MIC4742

Dual 2 MHz 2A Buck Regulator

Status: In Production

Features:

  • 2.9V to 5.5V supply voltage
  • 2MHz PWM mode
  • 2A Dual output
  • Greater than 92% efficiency
  • 100% maximum duty cycle
  • Adjustable output voltage option down to 0.6V
  • Ultra-fast transient response
  • Ultra-small external components Stable with a 1µH inductor and a 4.7µF output capacitor
  • Fully integrated 2A MOSFET switches
  • Micro-power shutdown
  • 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 MIC4742 is a high efficiency dual PWM buck (step-down) regulator that provides dual 2A current output. The MIC4742 operates at 2MHz. A proprietary internal compensation technique allows a closed loop bandwidth of over 200kHz.

The low on-resistance internal P-channel MOSFET of the MIC4742 allows efficiencies over 92%, reduces external components count and eliminates the need for an expensive current sense resistor.

The MIC4742 operates from 2.9V to 5.5V input and the output can be adjusted down to 0.6V. The device can operate with a maximum duty cycle of 100% for use in low-dropout conditions.

The MIC4742 is available in ETSSOP-16 packages with a junction operating range from -40°C to +125°C.

Additional Features
    • 2.9V to 5.5V supply voltage
    • 2MHz PWM mode
    • 2A Dual output
    • Greater than 92% efficiency
    • 100% maximum duty cycle
    • Adjustable output voltage option down to 0.6V
    • Ultra-fast transient response
    • Ultra-small external components Stable with a 1µH inductor and a 4.7µF output capacitor
    • Fully integrated 2A MOSFET switches
    • Micro-power 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
2
Input Voltage Range Min (V)
2.9
Input Voltage Range Max (V)
5.5
Output Voltage Range Min (V)
0.6
Output Voltage Range Max (V)
5.5
Output Current (mA) max
3000
Switching Frequency (kHz)
2000
Operating Temp Range
-40 to 125
Vfb (V)
0.6
Duty Cycle Max (%)
1
SHUTDOWN Current (µA) (Typ)
1.6

Documents

Jump to:

Data Sheet

11/05/2015
590KB

User Guides

11/11/2015
196KB

Development Environment

  • Demo & Evaluation Boards
  • Application Examples
Demo & Evaluation Boards
MIC4742YML Evaluation Board
MIC4742YML Evaluation Board ( MIC4742YML-EV )
(Not Recommended for new design)

The MIC4742 is a high efficiency dual PWM buck (step-down) regulator that provides up to 2A of output current for each channel. The MIC4742 operates at 2MHz and has proprietary internal compensation that allows a closed loop bandwidth of over 200kHz. The low on resistance internal P-Channel MOSFET of the MIC4742 allows efficiencies up to 92%, reduces external component count and eliminates 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
MIC4742YTSE
0.163511
16
TSSOP
4.4mm
Matte Tin
e3
MIC4742YTSE-TR
0.238548
16
TSSOP
4.4mm
Matte Tin
e3
MIC4742YML-TR
0.021300
0.801700
16
VQFN
3x3x1.00mm
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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