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HM2459 - 1.5A Step-Down Converter

General Description

The HM2459 is a wide input range, high-efficiency, and high frequency DC-to-DC step-down switching regulator, capable of delivering up to 1.5A of output current.

Key Features

  • Wide Input Operating Range from 4V to 38V.
  • Standoff Input Voltage: 42V.
  • High Efficiency at 12V In 5V Out: Up to 91%:.
  • High Efficiency PFM mode at light load.
  • Capable of Delivering 1.5A.
  • No External Compensation Needed.
  • Current Mode control.
  • Logic Control Shutdown.
  • Thermal shutdown and UVLO.
  • Available in SOT23-6 Package.

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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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HM2459 42V Input Standoff Voltage, 1.5A Step-Down Converter in SOT23-6 DESCRIPTION The HM2459 is a wide input range, high-efficiency, and high frequency DC-to-DC step-down switching regulator, capable of delivering up to 1.5A of output current. With a fixed switching frequency of 650KHz, this current mode PWM controlled converter allows the use of small external components, such as ceramic input and output caps, as well as small inductors.HM2459 also employs a proprietary control scheme that switches the device into a power save mode during light load, thereby extending the range of high efficiency operation. An OVP function protects the IC itself and its downstream system against input voltage surges.