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www.active-semi.com

Copyright © 2018 Active-Semi, Inc.

FEATURES

Type-C Support

5.1V/9.1V Outputs

APPLICATIONS

GENERAL DESCRIPTION

ACT4530 is a wide input voltage, high efficiency

step-down DC/DC converter that operates in either

CV (Constant Output Voltage) mode or CC

(Constant

Output

Current)

mode.

It

is

an

improvement over the ACT4529 with its QC2.0

compatibility in 12V automotive applications. The

ACT4530 eliminates the issue with QC2.0 buck

converters that try to operate with Vin = 12V to Vout

= 12V. In addition to QC2.0, it also supports Apple,

Samsung and BC1.2 protocols. ACT4530 also has

an optional input pin, PDC, that accepts a tri-state

input for USB-PD control. The ACT4530 also filters

out non-QC2.0 compatible communication pulses

generated

by

some

phones’

communication

protocols.

ACT4530 has accurate output current limits under

constant

current

regulation

to

meet

MFi

specification. It provides up to 3.0A output current

at 125kHz switching frequency. ACT4530 utilizes

adaptive drive technique to achieve good EMI

performance while main >90% efficiency at full load

for mini size CLA designs. It also has output short

circuit protection with hiccup mode. The average

output current is reduced to below 6mA when

output is shorted to ground. Other features include

output

over

voltage

protection

and

thermal

shutdown.

This device is available in a SOP-8EP package and

require very few external components for operation.

ACT4530

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

Rev 1.0, 19-Nov-2018

Typical Application Circuit

V/I Profile

* Patent Pending