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AP3211 - 1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER

General Description

The AP3211 is a 1.4MHz fixed frequency, current mode, PWM buck (step-down) DC-DC converter, capable of driving a 1.5A load with high efficiency, excellent line and load regulation.

The device integrates N-channel power MOSFET switch with low on-resistance.

Key Features

  • Input Voltage Range: 4.5V to 18V.
  • Output Voltage Adjustable from 0.81V to 15V.
  • Fixed 1.4MHz Frequency.
  • High Efficiency: up to 92%.
  • Output Current: 1.5A.
  • Current Mode Control.
  • Built-In Over Current Protection.
  • Built-In Thermal Shutdown Function.
  • Built-In UVLO Function.
  • Built-In Over Voltage Protection.
  • Built-In Soft-Start FB 3 4 EN.

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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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AP3211 1.4MHZ,1.5A ASYNCHRONOUS DC-DC BUCK CONVERTER Description The AP3211 is a 1.4MHz fixed frequency, current mode, PWM buck (step-down) DC-DC converter, capable of driving a 1.5A load with high efficiency, excellent line and load regulation. The device integrates N-channel power MOSFET switch with low on-resistance. Current mode control provides fast transient response and cycle-bycycle current limit. A standard series of inductors are available from several different manufacturers optimized for use with the AP3211. This feature greatly simplifies the design of switch-mode power supplies. The AP3211 is available in SOT-23-6 package. Pin Assignments (Top View) Pin 1 Mark BS 1 GND 2 6 SW 5 IN Features  Input Voltage Range: 4.5V to 18V  Output Voltage Adjustable from 0.