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AST1S31HF

Up to 4 V, 3 A step-down 2.3 MHz switching regulator for automotive applications

Input Voltage Min Volt2.8
Input Voltage Max Volt4.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack1
GradeAutomotive
Package NameVFDFPN 8 3x3x1.0

The AST1S31HF is an internally compensated 2.3 MHz fixed frequency PWM synchronous step-down regulator. The AST1S31HF operates from 2.8 V to 4 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.The AST1S31HF device integrates a 70 mΩ high-side switch and a 55 mΩ...
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Key features
  • AECQ100 qualified
  • 3 A DC output current
  • 2.8 V to 4 V input voltage
  • Output voltage adjustable from 0.8 V
  • 2.3 MHz switching frequency
  • Internal soft-start and enable
  • Integrated 70 mΩ and 55 mΩ power MOSFETs
  • All ceramic capacitor
  • Power Good (POR)
  • Cycle-by-cycle current limiting
  • Current foldback short-circuit protection
  • VFDFPN 3 x 3 - 8L package
Out of Stock
Quantity $ per unit Savings
1-9$4.050%
10-24$3.6410%
25-99$3.4415%
100-249$2.9826%
250-499$2.8230%
500$2.5437%
Contact sales
$4.05
Input Voltage Min Volt2.8
Input Voltage Max Volt4.0
ECCN USEAR99
ECCN EUNEC
Packing TypeTape And Reel
RoHs compliantEcopack1
GradeAutomotive
Package NameVFDFPN 8 3x3x1.0

The AST1S31HF is an internally compensated 2.3 MHz fixed frequency PWM synchronous step-down regulator. The AST1S31HF operates from 2.8 V to 4 V input, while it regulates an output voltage as low as 0.8 V and up to VIN.The AST1S31HF device integrates a 70 mΩ high-side switch and a 55 mΩ...
Read More

Key features
  • AECQ100 qualified
  • 3 A DC output current
  • 2.8 V to 4 V input voltage
  • Output voltage adjustable from 0.8 V
  • 2.3 MHz switching frequency
  • Internal soft-start and enable
  • Integrated 70 mΩ and 55 mΩ power MOSFETs
  • All ceramic capacitor
  • Power Good (POR)
  • Cycle-by-cycle current limiting
  • Current foldback short-circuit protection
  • VFDFPN 3 x 3 - 8L package