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Diodes Pericom: A product line of Diodes Incorporated


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.


  • Distributed Power Systems
  • Battery Charger
  • Pre-Regulator for Linear Regulators
  • WLED Driver

Product Specifications

Product Parameters

Type Buck
Efficiency 92 %
HS RDS(ON) 350 mΩ
Frequency Typ 1400 kHz
Minimum Input Voltage 4.75 V
Maximum Input Voltage 22 V
Output Current 1.5 A
Output Voltage 0.81 to 15 V
Quiescent Current Typ 0.5 mA
Shutdown Current Typ 0.1 µA

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Recommended Soldering Techniques
Orderable Part Number Authorized Distributor Quantity Inventory Date Buy Online Region
AP5101SG-13 Digi-Key Electronics 2490 5/21/2019 Buy Now Americas
AP5101SG-13 Future Electronics 10000 5/21/2019 Buy Now Americas