MIC4690

The MIC4690 SuperSwitcher™ is an easy-to-use, 500kHz step-down PWM voltage regulator. The MIC4690 achieves over 1A of continuous output current over a wide input voltage range in an 8-lead SO (small outline) package.

The high switching frequency of the MIC4690 allows the smallest surface-mount inductors and capacitors to be used. Internal compensation ensures fast transient response and a minimum amount of external components.

The MIC4690 features a power SO-8 package with a special lead frame that allows over 1A of continuous current. The MIC4690, housed in an SO-8, can replace larger TO-220 and TO-263 packages in many applications.

The MIC4690 allows for a high degree of safety. It has a wide input voltage range of 4V to 34V, allowing for it to be used in applications where input voltage transients may be present. Built-in safety features include over-current protection, frequency foldback protection, and thermal shutdown.

The MIC4690 is available in an 8-lead SO package with a junction temperature range of -40°C to +125°C.

Features
  • SO-8 package with over 1A output current
  • Fixed 500kHz operation
  • Wide 4V to 34Vinput voltage range
  • Output voltage adjustable to 1.23V
  • All surface mount solution
  • Internally compensated with fast transient response
  • Up to 85% efficiency
  • Overcurrent protection
  • Frequency foldback short-circuit protection
  • Thermal shutdown
Parameter
Parameter Name Value Value
Regulator Type Step Down (Buck) Step Down (Buck)
# of Outputs 1 1
Input Voltage Range Min (V) 4 4
Input Voltage Range Max (V) 34 34
Output Voltage Range Min (V) 1.23 1.23
Output Current (A) max 1 1
Quiescent Current (mA) typ 7 7
Switching Frequency (kHz) 500 500
Operating Temp Range -40 to 125 -40 to 125
Vfb (V) 1.23 1.23
Duty Cycle Max (%) 0.93 0.93
SHUTDOWN Current (µA) (Typ) 50 50
Documents
MIC4690 Data SheetData Sheets11/05/2015275KB
MIC4690 Evaluation BoardUser Guides11/11/2015195KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC4690YM8SOIC-40C to +125CTUBE2.381.981.801.741.72
MIC4690YM-TR8SOIC-40C to +125CT/R2.381.981.801.741.72
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC4690YM0.0780000.1808428SOIC3.9mmNiPdAue4
MIC4690YM-TR0.0780000.2384008SOIC3.9mmNiPdAue4
MIC4690 Data Sheet MIC4690
MIC4690 Evaluation Board MIC4690