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ACT4527 Datasheet(PDF) 1 Page - Active-Semi, Inc

Part # ACT4527
Description  40V/3.0A CV/CC Buck Converter Featuring USB-PD
PDF  13 Pages
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Manufacturer  ACTIVE-SEMI [Active-Semi, Inc]
Direct Link  http://www.active-semi.com
Logo ACTIVE-SEMI - Active-Semi, Inc

ACT4527 Datasheet(HTML) 1 Page - Active-Semi, Inc

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Innovative Power
TM
- 1 -
www.active-semi.com
Copyright
©
2
0
1
5
A
c
t
i
v
e
-Semi, Inc.
FEATURES
USB-PD Support
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
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
SOP-8EP Package
APPLICATIONS
Car Charger
Cigarette Lighter Adaptor (CLA)
Rechargeable Portable Device
CV/CC regulation DC/DC converter
GENERAL DESCRIPTION
ACT4527 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. ACT4527 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.
ACT4527 has accurate output current limits under
constant current regulation. It provides up to 3.0A
output current at 125kHz switching frequency.
ACT4527
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.
ACT4527
40V/3.0A CV/CC Buck Converter Featuring USB-PD
Rev 1, December 28
th, 2015
Typical Application Circuit
V/I Profile
ACT4527
H
S
B
I
N
S
W
4.5V to 40V
R
c
s
2
0
m
Ù
C
S
P
V
o
u
t
G
N
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


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