Diodes Incorporated

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AP3417A (Obsolete)

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The AP3417A is a 1.4MHz fixed frequency, current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 1A load with high efficiency, excellent line and load regulation. The device integrates synchronous P-channel and N-channel power MOSFET switches with low on-resistance. It is ideal for powering portable equipment that runs from a single Li-ion battery. A standard series of inductors are available from several different manufacturers optimized for use with the AP3417A. This feature greatly simplifies the design of switch-mode power supplies.


  • Set-top Box
  • Datacom
  • Portable Device
  • Smart Phone

Product Specifications

Product Parameters

Efficiency (%) 94
Frequency Typ (Hz) 1500
HS RDS(ON) (mΩ) 250
LS RDS(ON) (mΩ) 200
MaximumInput Voltage (V) 5.5
MinimumInput Voltage (V) 2.5
Output Current (A) 1
Output Voltage (V) 0.6 to 0.9xVIN
Quiescent Current Typ (mA) 0.062
Shutdown Current Typ (µA) 0.1
Type Buck

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