Diodes Incorporated
SO 8

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AP5101 (Not Recommended for new design)

NRND = Not Recommended for New Design

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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

Efficiency (%) 92
Frequency Typ (Hz) 1400
HS RDS(ON) (mΩ) 350
MaximumInput Voltage (V) 22
MinimumInput Voltage (V) 4.75
Output Current (mA) 1.5
Output Voltage (V) 0.81 to 15
Quiescent Current Typ (mA) 0.5
Shutdown Current Typ (µA) 0.1
Type Buck

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