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AP3440 - 2MHZ HIGH PERFORMANCE SYNCHRONOUS BUCK CONVERTER

General Description

The AP3440 is a current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 4A load with high efficiency, excellent line and load regulation.

The device integrates two N-channel power MOSFETs with low onresistance.

Key Features

  • Input Voltage Range: 2.95V to 5.5V.
  • 0.8V Reference Voltage with ±3% Precision.
  • Two 30m(Typical) MOSFETs for High Efficiency at 4A Load.
  • High Efficiency: Up to 94%.
  • Output Current: 4A.
  • Programmable Frequency:200kHz to 2MHz.
  • Current Mode Control.
  • Synchronizes to External Clock.
  • Adjustable Soft-start.
  • Soft Start-up into Pre-biased Output.
  • UV and OV Power Good Output.
  • Built-in Over Current Protection.
  • Built-in Thermal Shutdown Funct.

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NEW PRODUCT A Product Line of Diodes Incorporated AP3440 4A, 2MHZ HIGH PERFORMANCE SYNCHRONOUS BUCK CONVERTER Description The AP3440 is a current mode, PWM synchronous buck (step-down) DC-DC converter, capable of driving a 4A load with high efficiency, excellent line and load regulation. The device integrates two N-channel power MOSFETs with low onresistance. Current mode control provides fast transient response and cycle-by-cycle current limit. The switching frequency of AP3440 can be programmable from 200kHz to 2MHz, which allows small-sized components, such as capacitors and inductors. A standard series of inductors from several different manufacturers are available. This feature greatly simplifies the design of switch-mode power supplies. Under voltage lockout is internally set at 2.