SY6821ADQC - Single 4A, Ultra Low Loss Load Switch


  • Input Voltage Range: 0.6V to 3.6V
  • Bias Range: 2.5V to 5.5V
  • Low RDS(ON) for Internal Pass Switch:16mΩ
  • Maximum Output Current: 4A
  • Accurate Turn on Threshold to Allow Programmable Turn on Delay to Enable Power Sequencing
  • Programmable Turn on Slew Rate
  • Quiescent Bias Current: 100μA
  • Automatic Shutdown Discharge: 100Ω
  • RoHS Compliant and Halogen Free
  • Compact Package: DFN1.5×1.5-6

Typical Application


SY6821A is a single 4A load switch, 2.5V-5.5V VBIAS with internal charge pump. It develops a ultra-low RDS(ON) load switch for power distribution in computer systems. Ultra low power loss and tiny DFN1.5×1.5-6 compatible package achieves small solution size.


  • Notebook PC
  • Desktop PC
  • Server
  • Set Top Box
  • E-Book
  • LCD-TV
  • Portable Device