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MIC4684

200kHz 2A SuperSwitcher™ Buck Regulator

Status: In Production

Features:

  • SO-8 package with 2A continuous output current
  • Over 85% efficiency
  • Fixed 200kHz PWM operation
  • Wide input voltage range: 4V to 30V
  • Output voltage adjustable to 1.235V
  • All surface mount solution
  • Internally compensated with fast transient response
  • Over-current protection
  • Frequency foldback short-circuit protection
  • Thermal shutdown
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Overview
Documents
Development Environment
RoHS Information
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Device Overview

Summary

The MIC4684 is a high-efficiency 200kHz stepdown (buck) switching regulator. Power conversion efficiency of above 85% is easily obtainable for a wide variety of applications. The MIC4684 achieves 2A of continuous current in an 8-lead SO (small outline) package at 60°C ambient temperature.

High efficiency is maintained over a wide output current range by utilizing a boost capacitor to increase the voltage available to saturate the internal power switch. As a result of this high efficiency, no external heat sink is required. The MIC4684, housed in an SO-8, can replace larger TO-220 and TO-263 packages in many applications.

The MIC4684 allows for a high degree of safety. It has a wide input voltage range of 4V to 30V (34V transient), allowing it to be used in applications where input voltage transients may be present. Built-in safety features include over-current protection, frequency-foldback short-circuit protection, and thermal shutdown.

The MIC4684 is available in an 8-lead SO package with a junction temperature range of -40°C to +125°C.

Additional Features
    • SO-8 package with 2A continuous output current
    • Over 85% efficiency
    • Fixed 200kHz PWM operation
    • Wide input voltage range: 4V to 30V
    • Output voltage adjustable to 1.235V
    • All surface mount solution
    • Internally compensated with fast transient response
    • Over-current protection
    • Frequency foldback short-circuit protection
    • Thermal shutdown
Parametrics
Name
Value
Regulator Type
Step Down (Buck)
# of Outputs
1
Input Voltage Range Min (V)
4
Input Voltage Range Max (V)
30
Output Voltage Range Min (V)
1.24
Output Current (mA) max
2000
Quiescent Current (mA) typ
6
Switching Frequency (kHz)
200
Operating Temp Range
-40 to 125
Vfb (V)
1.24
Duty Cycle Max (%)
0.94
SHUTDOWN Current (µA) (Typ)
5

Documents

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Data Sheets

  
482KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MIC4684 2A Buck w/ level select Eval Bd
MIC4684 2A Buck w/ level select Eval Bd ( ADM00821 )

The MIC4684 2A Buck Eval Board w/ level sel allows the evaluation of the MIC4684 which is a step down converter with a maximum input voltage of 30V and a maximum output current of 2A.

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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
MIC4684YM
0.074000
0.178947
8
SOIC
3.9mm
Matte Tin
e3
MIC4684YM-TR
0.074000
0.238400
8
SOIC
3.9mm
Matte Tin
e3
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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