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  • Model No. :

    CX8853Q

  • Withstand voltage :

    40V

  • Output voltage :

    3-30V

  • Output current :

    4A

  • Working mode :

    Buck

  • Packaging :

    SOP-8L
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Datesheet

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  • product details

Overview

 

The CX8853Q is a highly reliable synchronous buck converter IC that meets AEC-Q100 Grade2 requirements. It features an input voltage tolerance of 40V and functions as a step-down DC-DC converter capable of precise constant voltage (CV) and constant current (CC) regulation.

 

The CX8853Q integrates a 20mΩ High-side NMOS and a 20mΩ Low-side NMOS, supporting a continuous output current of 4A. The output voltage is adjustable, and it supports a maximum duty cycle of up to 98%.

 

The CX8853Q offers high-performance load transient response and input voltage transient response. Its precise constant voltage and constant current control loops achieve extremely low load and line regulation.

 

The CX8853Q requires no external compensation. It relies on its internal stable loop for constant current and constant voltage control and features a cable voltage drop compensation function. The CX8853Q is a constant voltage, constant current step-down DC-DC converter characterized by a simplified application circuit, excellent performance, and stable, reliable operation.

 

Features

● Compliant with AEC-Q100 Grade2

● Input Voltage Range: 4.75V — 40V

● Integrated 20mΩ High-side NMOS

● Integrated 20mΩ Low-side NMOS

● Supports 4A Continuous Output Current

● Supports Maximum 98% Duty Cycle

● Adjustable Output Voltage and Current (3.2V - 20V)

● Constant Current Accuracy ±8%

● Constant Voltage Accuracy ±2% (VFB=1.0V)

● No External Compensation Required

● Adjustable Switching Frequency

● Cable Compensation Function

● Protections: Short Circuit (SCP), Over-Temperature (OTP), Over-Current (OCP), Under-Voltage Lockout (UVLO)

● Built-in SW Cycle-by-Cycle Current Limit Mode to prevent damage caused by RSENSE current limit resistor short circuit.

● SOP-8 Package

● Output can be shut down by external control of COMP/EN

 

Applications

● Car Chargers

● Lighting Lamps

● Power Supplies for Portable Devices

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