Diodes Incorporated


1.5A Step-Down Converter with 1.4MHz Switching Frequency

Topologie: Buck
Eingangsspannung (min.): 4.75 V
Eingangsspannung (max.): 22.00 V
Schaltfrequenz (min.): 1100.00 kHz
Schaltfrequenz (max.): 1700.00 kHz
Ausgang 1: 3.30 V / 1.500 A


The AP5101 is a current mode step-down converter with a built-in power MOSFET to enable smallest solution size power conversion.With the low series resistance power switch it enables a constant output current of up to 1.5A over a wide input supply range. The load and line regulation has excellent response time over the operating input voltage and temperature range.The AP5101 is self protected, through a cycle-by-cycle current limiting algorithm and an on chip thermal protection. The AP5101 will provide the voltage conversion with a low count of widely available standard external components.The AP5101 is available in SO-8 package.


  • VIN 4.75 to 22V
  • 1.5A Peak Output Current
  • Stable with Low ESR Ceramic Output Capacitors
  • External compensation
  • Up to 92% Efficiency
  • 0.1μA Shutdown Mode
  • Fixed 1.4MHz Frequency
  • Thermal Shutdown
  • Cycle-by-Cycle Over Current Protection
  • Output Adjustable from 0.81V to 15V
  • SO-8: Available in “Green” Molding Compound (No Br, Sb)
  • Lead Free Finish/ RoHS Compliant (Note 1)Remarks:A 1μH to 10μH inductor with a DC current rating of at least 25% percent higher than the maximum load current is recommended for most applications.Refer page no.10Table 2. Suggested Surface Mount InductorsRefer page no.12


  Artikel Nr. SPEC Produktserie L1
IR 1
RDC1 typ
fres 1
7440530047 PDF WE-TPC SMT-Speicherdrossel 4.7 2.4 1.95 30 40