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PDF ACT4525 Data sheet ( Hoja de datos )
| Número de pieza | ACT4525 | |
| Descripción | 40V/3.5A CV/CC Buck Converter | |
| Fabricantes | Active-Semi | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ACT4525 (archivo pdf) en la parte inferior de esta página. Total 11 Páginas | ||
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ACT4525
Rev 1.1, December 17th, 2015
40V/3.5A CV/CC Buck Converter with USB Auto –Detect
FEATURES
Pass Apple MFi Test
40V Input Voltage Surge
4.5V-36V Operational Input Voltage
Dual 5.1V Outputs with 1% Accuracy
Up to 3.5A Output Current
2.65A Constant Current Regulation for VOUT1
1.2A Constant Current Regulation for VOUT2
USB Auto-detect Support Apple 2.4A, Samsung
and BC1.2 Devices
Hiccup Mode Protection at Output Short
90% Efficiency at Full Load
0.5mA Low Standby Input Current
5.7V Output Over Voltage Protection
Cord Voltage Drop 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
ACT4525 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. ACT4525 has
separated output current limits for dual port CLA
applications. With the separated current limits, the
CLA can meet Apple’s MFi standard. ACT4525
provides up to 3.5A output current at 125kHz
switching frequency. ACT4525 builds in USB auto-
detect algorithms to recognize Apple, Samsung,
and BC1.2 devices to ensure maximum charge
current to attached devices. ACT4525 utilize
adaptive drive technique to achieve good EMI
performance while main 90% efficiency at full load
for mini size CLA designs. ACT4525 also built in
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.
The devices are available in a SOP-8EP package
and require very few external devices for operation.
Typical Application Circuit
4.5V to 40V
C1 C2
47μF 10μF
CSN2 CSN1 HSB
IN SW
ACT4525
CSP
GND DP
DM
D1
SK54L
C3
22nF
L1
33μH
C4
10μF
Rcs2
50mΩ
Rcs1
25mΩ
C5
470μF
C6
2.2μF
5.1V/2.4A
Vout
D-
D+
GND
5.1V/1A
Vout
C7
2.2μF
D-
D+
GND
5.25V
5.10V
4.95V
3.20V
Vout1
5.25V
5.10V
4.95V
3.20V
Vout2
V/I Profile
Iout1
2.4A 2.9A
* Patent Pending
Innovative PowerTM
Iout2
1.1A 1.3A
- 1 - www.active-semi.com
Copyright © 2015 Active-Semi, Inc.
1 page  
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TA = 25°C, unless otherwise specified.)
Parameter
Symbol
Condition
Out Voltage Ripples
Cout=470uF/22uF ceramic
ACT4525
Rev1.1, December 17th, 2015
Min Typ Max Units
80 mV
Line Transient Response
Input 12V-40V-12V with 1V/us
slew rate, Vout=5V, Iload=0A
and 2.4A
4.75
5.25 V
Load Transient Response
Thermal Shut Down
Thermal Shut Down Hysteresis
ESD of DP, DM
Vout=5V
80mA-1.0A-80mA load with
0.1A/us slew rate
HBM
4.9 5.15 5.4
V
160 °C
30 °C
8 kV
Innovative PowerTM
- 5 - www.active-semi.com
Copyright © 2015 Active-Semi, Inc.
5 Page 
ACT4525
Rev1.1, December 17th, 2015
PACKAGE OUTLINE
SOP-8EP PACKAGE OUTLINE AND DIMENSIONS
E
E2
E1
θ
c
A1
L
A2
A
SYMBOL
A
A1
A2
b
c
D
D1
E
E1
E2
e
L
θ
DIMENSION IN
MILLIMETERS
MIN MAX
1.350 1.727
0.000 0.152
1.350 1.550
0.330 0.510
0.170 0.250
4.700 5.100
3.202 3.402
3.734 4.000
5.800 6.200
2.313 2.513
1.270 TYP
0.400 1.270
0° 8°
DIMENSION IN
INCHES
MIN MAX
0.053 0.068
0.000 0.006
0.053 0.061
0.013 0.020
0.007 0.010
0.185 0.200
0.126 0.134
0.147 0.157
0.228 0.244
0.091 0.099
0.050 TYP
0.016 0.050
0° 8°
Active-Semi, Inc. reserves the right to modify the circuitry or specifications without notice. Users should evaluate each
product to make sure that it is suitable for their applications. Active-Semi products are not intended or authorized for use
as critical components in life-support devices or systems. Active-Semi, Inc. does not assume any liability arising out of
the use of any product or circuit described in this datasheet, nor does it convey any patent license.
Active-Semi and its logo are trademarks of Active-Semi, Inc. For more information on this and other products, contact
sales@active-semi.com or visit http://www.active-semi.com.
® is a registered trademark of Active-Semi.
Innovative PowerTM
- 11 -
www.active-semi.com
Copyright © 2015 Active-Semi, Inc.
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet ACT4525.PDF ] | |
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