Innovative Power

TM

- 1 -

www.active-semi.com

Copyright

©

2

0

1

5

-2017 Active-Semi, Inc.

FEATURES



Quick Charge

™

2

.

0

C

e

r

t

i

f

i

e

d

b

y

Q

u

a

l

c

o

m

m

®

and UL.



UL Certificate No. 4787083099-1



http://www.qualcomm.com/documents/quickc

harge-device-list



Pass Apple MFi Test



40V Input Voltage Surge



4.5V-36V Operational Input Voltage



5.1V/9.1V/12.1V Output with +/-1% Accuracy



Up to 3.0A Output current



Constant Current Regulation Limit



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

Type-C Support



Support Apple 2.4A, Samsung and BC1.2



Hiccup Mode Protection at Output Short



>90% Efficiency at Full Load



0.5mA Low Standby Input Current



5.7V/10.1V/13.5V Output Over-voltage

Protection for 5.1V/9.1V/12.1V Outputs



Cord Voltage Compensation



Meet EN55022 Class B Radiated EMI Standard



8kV 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

ACT4529 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. This device has

QC2.0 built in to provide 5.1V/9.1V/12.1V outputs

as requested by attached portable devices. Besides

building in QC2.0 decoding, it also supports Apple,

Samsung and BC1.2 devices to charge at full

current rate. ACT4529 has an interface for USB-PD

control via a tri-state digital pin. Vout is 5.1V if this

pin is floating, Vout is 9.1V when this pin voltage is

less than 0.8V and Vout is 12.1V while this pin

voltage is more than 2.0V.

ACT4529 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. ACT4529 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.

ACT4529

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

Rev 4, 06-Jan-2017

Typical Application Circuit

V/I Profile

ACT4529

H

S

B

I

N

S

W

4.5V to 40V

D

M

R

c

s

2

0

m

Ù

C

S

P

D

P

V

o

u

t

G

N

D

D

-

D

+

G

N

D

C

S

N

5V/9V/12V

C

2

1

0

ì

F

C

3

2

2

n

F

C

5

2

2

0

ì

F

C

1

4

7

ì

F

C

4

2

2

ì

F

C

6

2

.

2

ì

F

D

1

S

K

5

4

L

L

1

4

0

ì

H

P

D

C

USB-PD Controller

I

/

O

C

C

1

C

C

2

C

C

1

C

C

2

3.3A

5.1V

Vout

Iout

3.2V

9.1V

12.1V

* Patent Pending