MIC4682

The MIC4682 is an easy-to-use step-down (buck) switch-mode voltage regulator. It features a programmable current limit that allows 10% current limit accuracy over its full operating temperature range. The precision current limit makes the MIC4682 ideal for constant-voltage constant-current applications, such as simple battery chargers. The precision current limit also gives designers the ability to set the maximum output current below the saturation current rating of the inductor. This allows the use of the smallest possible inductors for a given application, saving valuable space and cost.

The MIC4682 is a very robust device. Its 4V to 34V input voltage range allows the MIC4682 to safely be used in applications where voltage transients may be present. Additional protection features include cycle-by-cycle current limiting and over-temperature shutdown. The MIC4682 is available in a thermally optimized power SO-8 package that allows it to achieve 2A of continuous output current.

The MIC4682 requires a minimum number of external components and can operate using a standard series of inductors. Compensation is provided internally for fast transient response and ease of use. The MIC4682 is available in the 8-lead power SOP with a -40°C to +125°C junction temperature range.

Features
  • Programmable output current limit
  • 10% accuracy over temperature
  • Wide operating input voltage range: 4V to 34V
  • Fixed 200kHz PWM operation
  • Power SOIC-8 package allows 2A continuous output current
  • All surface mount solution
  • Internally compensated
  • Less than 1µA typical shutdown-mode current
  • Thermal shutdown protection
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 2 2
Quiescent Current (mA) typ 7 7
Switching Frequency (kHz) 200 200
Operating Temp Range -40 to 125 -40 to 125
Vfb (V) 1.23 1.23
Duty Cycle Max (%) 0.95 0.95
SHUTDOWN Current (µA) (Typ) 35 35
Documents
MIC4682 Data SheetData Sheets11/05/2015907KB
MIC4682 Evaluation BoardUser Guides11/11/2015156KB
Ordering Information
Part NumberLeadsPackage TypeTemp RangePacking1+26+100+1000+5000+
MIC4682YM8SOIC-40C to +125CTUBE3.663.052.782.682.65
MIC4682YM-TR8SOIC-40C to +125CT/R3.663.052.782.682.65
RoHS Information
PartNumberDeviceWeightShippingWeightLeadCountPackageTypePackageWidthSolderCompositionJEDECIndicatorRoHSChinaEFUP
MIC4682YM0.0000008SOIC3.9mmMatte Tine3
MIC4682YM-TR0.0000008SOIC3.9mmMatte Tine3
MIC4682 Data Sheet MIC4682
MIC4682 Evaluation Board MIC4682