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MIC4685

200kHz 3A SuperSwitcher™ Buck Regulator

Status: In Production

Features:

  • Low 2mm profile SPAK package
  • 3A continuous output current
  • Wide input voltage range: 4V to 30V (34V transient)
  • Fixed 200kHz PWM operation
  • Over 85% efficiency
  • 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 MIC4685 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 MIC4685 achieves 3A of continuous current in the 7-lead SPAK package.

The thermal performance of the SPAK allows it to replace TO-220s and TO-263s (D2 PAKs) in many applications. The SPAK saves board space with a 36% smaller footprint than TO-263.

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, only the ground plane of the PCB is needed for a heat sink.

The MIC4685 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 MIC4685 is available in an 7-lead SPAK package with a junction temperature range of -40°C to +125°C.

Additional Features
    • Low 2mm profile SPAK package
    • 3A continuous output current
    • Wide input voltage range: 4V to 30V (34V transient)
    • Fixed 200kHz PWM operation
    • Over 85% efficiency
    • 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
3000
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

  
331KB

Development Environment

  • Demo & Evaluation Boards
Demo & Evaluation Boards
MIC4685WR Evaluation Board
MIC4685WR Evaluation Board ( MIC4685WR-EV )

The MIC4685 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 MIC4685 achieves 3A of continuous current in the 7-pin SPAK package.

Learn More
Add To Cart

RoHS Information

Part Number
Device Weight (g)
Shipping Weight (grams)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
MIC4685WR
0.541800
0.666667
7
SPAK
-
Matte Tin
e3
MIC4685WR-TR
0.541800
1.440000
7
SPAK
-
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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