IR3859M

Highly Efficient Integrated 9A Sync Buck Regulator

ParametricIR3859M
Iout9.0A
Input Voltage  min  max1.5V  21.0V
Output Voltage  min  max0.7V  18.9V
FeaturesPGOOD + EN + SEQ + OVP + SYNC
PackagePQFN / 4 x 5
Switching Frequency  min  max250.0kHz  1500.0kHz
TechnologyPOL
TypeSingle Output
Design ToolYes
Moisture Sensitivity Level2
QualificationIndustrial
Sales Product NameIR3859M
OPNIR3859MTRPBF
Product Statusactive
Package NamePQFN-24L (4X5)
Completely lead freeyes
Halogen freeyes
RoHS compliantyes
Packing Size4000
Packing TypeTAPE & REEL
Moisture Level2
Benefits:
  • Greater than 95% Maximum Efficiency
  • Wide Input Voltage Range 1.5V to 21V
  • Wide Output Voltage Range 0.7V to 0.9*Vin
  • Continuous 9A Load Capability
  • Integrated Bootstrap-diode
  • High Bandwidth E/A for excellent transient performance
  • Programmable Switching Frequency up to 1.5MHz
  • Programmable Over Current Protection
  • Over Voltage Protection
  • Dedicated input for output voltage monitoring
  • Programmable PGood output
  • Hiccup Current Limit
  • Precision Reference Voltage (0.7V, +/-1%)
  • Programmable Soft-Start
  • Enable Input with Voltage Monitoring Capability
  • Enhanced Pre-Bias Start-up
  • Seq input for Tracking applications
  • External Synchronization
  • -40°C to 125°C operating junction temperature
  • Thermal Protection
  • 4mm x 5mm Power QFN Package
  • Halogen Free, Lead Free and RoHS compliant
Target Applications:
  • Notebooks Portables
  • Point of Load
Data Sheet
TitleSizeDateVersion
Data Sheet - IR3859M,EN973 KB18 六月 2010
Evaluation Boards
BoardFamilyDescriptionStatus
IRDC3859Programmable Soft Start. Programmable Over Current Protection. Pre-Bias Start Up.IR3859Mactive
EN IR3859M