EC3268A|30Vin 8A 2-Outputs Buck Converter

EC3268A|30Vin 8A 2-Outputs Buck Converter

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General Description

EC3268A is a Synchronous Buck Circuit with two current sense pins suitable for many multi‐ output applications.
It is designed to allow for operating a wide supply voltage range from 4.7V to 30V.
This IC can operate in both Constant Current (CC) and Constant Voltage (CV) modes.
EC3268A operates as a Buck Circuit providing a wide range of outputs at Constant Voltage (CV) from 4.7V to 30V and the output current as high as 8A or above.
It has a Constant Current (CC) mode so that output current can be set externally and at an accuracy of ±4%.
The current mode control and external compensation makes feedback control have good line and load regulation with flexible external design.

Features

  • Vin: 4.2V to 30V
  • Vout: 3V to 28V; typical at 5V
  • Low Dropout Operation: Maximum Duty Cycle at 99.5%
  • Precision CC/CV Mode Control
  • Burst/PFM Mode for Increased Light Load Efficiency
  • 2 outputs independent Constant Current setting
  • Hiccup mode when output voltage below 50% normal output voltage
  • Protection:
    NMOS peak current limit: accuracy:~20%Output short protection: reduce input current to less than 20mA (RMS)
    Output FB OVP (125% VFB), only turn off High side MOS.
    Temperature shutdown (OTP)
  • Adjustable Output Cable Resistance Compensation
  • Switching Frequency: 125k+25k
  • Integrated Power MOSFET
  • QFN32L Package

Applications

  • USB Power Supplies with PD
  • High‐ Brightness Lighting
  • General‐ Purpose DC/DC Application


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