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60-100V buck converter
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  • Model No. :

    CX8903

  • Withstand voltage :

    100V

  • Output voltage :

    ADJ

  • Output current :

    3A

  • Working mode :

    Buck

  • Packaging :

    SOP-8L
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  • product details

Overview

The CX8903 is a wide-input-voltage-range switching buck DC-DC controller supporting input voltages up to 100V.

It features low standby power consumption, high efficiency, low ripple, and excellent bus voltage regulation and load regulation.

The CX8903 incorporates a 100V/90mΩ power switch supporting up to 3A output current. The output voltage can be set by adjusting the voltage divider resistor connected to the FB pin.

The CX8903 employs fixed-frequency PWM control with a typical switching frequency of 100kHz. It enters skip-cycle mode during light loads to achieve high conversion efficiency.

The CX8903 integrates soft-start, over-temperature protection, output short-circuit protection, current limiting, and cycle-by-cycle current detection to enhance system reliability.

Packaged in an SOP-8L, the CX8903 requires minimal external components and is ideal for wide-input DC-DC buck applications.


Features

  • Integrated 100V / 90mΩ N-channel MOSFET

  • Wide input voltage range: 10V to 100V

  • Minimal external components

  • Zero-power shutdown via enable pin

  • Output short-circuit hiccup protection

  • Over-temperature protection

  • Cycle-by-cycle current limiting

  • Flexible output voltage and current adjustment

  • External loop regulation

  • SOP-8L package


Applications

  • Hoverboard controllers

  • Electric vehicle converters

  • Fast-charging power supplies

  • Electric vehicle alarm power supplies

  • Inverter systems

  • Non-isolated PoE for industrial control systems, IP cameras


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