Data Sheet Rev. B, September 2019 | Subject to change without notice

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ACT4530M

40 V/3.0 A CV/CC Buck Converter Featuring QC2.0, USB Auto-Detect and USB-PD

resistors, trace resistance shared with the load can

cause significant errors. It is recommended to connect

the sense resistor pads directly to the CSP and CSN

pins using “Kelvin” or “4-wire” connection techniques as

shown below.

Current Limit Setting

If output current hits current limit, output voltage drops

to keep the current to a constant value.

The following equation calculates the constant current

limit.

*+*, - =

66 +

/0 +1

(6)

Where Rcs is current sense resistor.

PCB Load

Trace

Kevin Sense

Traces

Sense

Resistor