{"id":17084,"date":"2023-05-02T14:14:20","date_gmt":"2023-05-02T06:14:20","guid":{"rendered":"https:\/\/22ya4u4yz3u0.wpsite.pro\/?p=17084"},"modified":"2024-09-10T13:31:00","modified_gmt":"2024-09-10T05:31:00","slug":"ec3268a","status":"publish","type":"post","link":"https:\/\/www.ecmos.com.tw\/cn\/dc-converter-hv-buck\/ec3268a\/","title":{"rendered":"EC3268A\uff5c30Vin 8A 2-Outputs Buck Converter"},"content":{"rendered":"\n
\u898f\u683c\u66f8\u4e0b\u8f09<\/div><\/a>\n\n\n\n
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General Description<\/h3>\n\n\n\n

EC3268A is a Synchronous Buck Circuit with two current sense pins suitable for many multi\u2010 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 \u00b14%.
The current mode control and external compensation makes feedback control have good line and load regulation with flexible external design.<\/p>\n\n\n\n

Features<\/h3>\n\n\n\n
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  • Vin: 4.2V to 30V<\/li>\n\n\n\n
  • Vout: 3V to 28V; typical at 5V<\/li>\n\n\n\n
  • Low Dropout Operation: Maximum Duty Cycle at 99.5%<\/li>\n\n\n\n
  • Precision CC\/CV Mode Control<\/li>\n\n\n\n
  • Burst\/PFM Mode for Increased Light Load Efficiency<\/li>\n\n\n\n
  • 2 outputs independent Constant Current setting<\/li>\n\n\n\n
  • Hiccup mode when output voltage below 50% normal output voltage<\/li>\n\n\n\n
  • Protection:
    NMOS peak current limit: accuracy\uff1a~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)<\/li>\n\n\n\n
  • Adjustable Output Cable Resistance Compensation<\/li>\n\n\n\n
  • Switching Frequency: 125k+25k<\/li>\n\n\n\n
  • Integrated Power MOSFET<\/li>\n\n\n\n
  • QFN32L Package<\/li>\n<\/ul>\n\n\n\n

    Applications<\/h3>\n\n\n\n
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    • USB Power Supplies with PD<\/li>\n\n\n\n
    • High\u2010 Brightness Lighting<\/li>\n\n\n\n
    • General\u2010 Purpose DC\/DC Application<\/li>\n<\/ul>\n\n\n\n
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