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AP3409 - 4MHz HIGH EFFICIENCY SYNCHRONOUS BUCK CONVERTER

General Description

The AP3409/A is a current mode, PWM synchronous buck DC/DC converter, capable of driving a 3A load with high efficiency, excellent line and load regulation.

It operates in continuous PWM mode.

Key Features

  • Input Voltage Range: 2.6V to 5.5V.
  • Adjustable Output from 0.8V to 5V.
  • 0.8V Reference Voltage with ±2% Precision.
  • Output Current: 3A.
  • High Efficiency up to 95%.
  • Low RDSON Internal Switches.
  • Programmable Frequency: 300kHz to 4MHz.
  • Current Mode Control.
  • Forced Continuous-mode Operation.
  • 100% Duty Cycle.
  • Built-in Soft-start.
  • Built-in Short Circuit Protection.
  • Built-in Thermal Shutdown Protection.
  • Built-in Current Limit Function.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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A Product Line of Diodes Incorporated AP3409/A 3A, 4MHz HIGH EFFICIENCY SYNCHRONOUS BUCK CONVERTER Description Pin Assignments The AP3409/A is a current mode, PWM synchronous buck DC/DC converter, capable of driving a 3A load with high efficiency, excellent line and load regulation. It operates in continuous PWM mode. The AP3409/A integrates synchronous P-channel and N-channel power MOSFET switches with low on-resistance. It is ideal for portable applications powered from a single Li-ion battery. 100% duty cycle and low on-resistance P-channel internal power MOSFET can maximize the battery life. The switching frequency of AP3409/A can be programmable from 300kHz to 4MHz, which allows small-sized components, such as capacitors and inductors.