ACT4530M

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

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

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FEATURES

• AEC-Q100 Automotive Qualified

• -40 °C ~ 125 °C Junction Temperature Range

• 12 V Input Optimized (Automotive Applications)

• QC2.0 Decoding + USB Auto-Detect + USB-PD

Type-C Support

• Apple MFi and 2.4 A compatible

• Samsung and BC1.2 compatible

• 40 V Input Voltage Surge

• 4.5 V - 36 V Operational Input Voltage

• 5.1 V/9.1 V Output with +/-1% Accuracy

• Up to 3.0 A Output current

• Constant Current Regulation Limit

• Hiccup Mode Protection at Output Short

• >90% Efficiency at Full Load

• 0.5 mA Low Standby Input Current

• 5.7 V/10.1 V Output Over-voltage Protection for

5.1 V/9.1 V Outputs

• Cord Voltage Compensation

• Meet EN55022 Class B Radiated EMI Standard

• 8 kV ESD HBM Protection on DP and DM

• SOP-8EP Package

APPLICATIONS

• Car Charger

• Cigarette Lighter Adaptor (CLA)

• Rechargeable Portable Device

• CV/CC regulation DC/DC converter

GENERAL DESCRIPTION

ACT4530M 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 12 V

automotive applications. The ACT4530M eliminates the

issue with QC2.0 buck converters that try to operate

with VIN = 12 V to Vout = 12 V. In addition to QC2.0, it

also supports Apple, Samsung and BC1.2 protocols.

ACT4530M also has an optional input pin, PDC, that

accepts a tri-state input for USB-PD control. The

ACT4530M also filters out non-QC2.0 compatible

communication pulses generated by some phones’

communication protocols.

ACT4530M has accurate output current limits under

constant current regulation to meet MFi specification. It

provides up to 3.0 A output current at 125 kHz switching

frequency. ACT4530M 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 6 mA

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.

Typical Application Circuit

V/I Profile