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PDF ACT4528 Data sheet ( Hoja de datos )
| Número de pieza | ACT4528 | |
| Descripción | 40V/3.0A CV/CC Buck Converter | |
| Fabricantes | Active-Semi | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de ACT4528 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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ACT4528
Rev 1.2, December 28th, 2015
40V/3.0A CV/CC Buck Converter Featuring QC2.0 and USB Auto-Detect
FEATURES
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
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/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
ACT4528 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. ACT4528 has
QC2.0 decoding built in to provide 5.1V/9.1V/12.1V
outputs as requested by attached portable devices.
It also supports Apple 2.4A, Samsung and BC1.2
devices to charge at full current rate.
ACT4528 has accurate output current limits under
constant current regulation to meet MFi
specification. It can provide up to 3.0A output
current at 125kHz switching frequency. ACT4528
utilizes adaptive drive technique to achieve good
EMI performance while main >90% efficiency at full
load for mini size CLA designs. ACT4528 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.
ACT4528 is available in a SOP-8EP package and
require very few external components for operation.
Typical Application Circuit
4.5V to 40V
C1 C2
47μF 10μF
CSN HSB
C3
22nF
Rcs
25mΩ
IN SW
ACT4528
CSP
L1
47μH
GND DP DM
D1
C4 C5
C6
22μF 220μF 2.2μF
SK54L
5V/9V/12V
Vout
D-
D+
GND
V/I Profile
Innovative PowerTM
Vout
12.1V
9.1V
5.1V
3.2V
Iout
2.65A
-1-
www.active-semi.com
Copyright © 2015 Active-Semi, Inc.
1 page  
ELECTRICAL CHARACTERISTICS
(VIN = 12V, TA = 25°C, unless otherwise specified.)
ACT4528
Rev1.2, December 28th, 2015
Parameter
Out Voltage Ripples
VOUT Discharge Current
Symbol
Condition
Min Typ Max Units
Cout=470uF/22uF ceramic
80 mV
For high to lower voltage transi-
tions
60
mA
Voltage transition time for QC 2.0
transition
12V-5V
100 ms
Voltage transition time for QC 2.0
transition
5V-12V
100 ms
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
Vout=9V
Vout=12V
80mA-1.0A-80mA load with
0.1A/us slew rate
80mA-1.0A-80mA load with
0.1A/us slew rate
HBM
4.9 5.15 5.4
V
8.7 9.1 9.5
11.6 12.1 12.6
160
30
8
V
V
°C
°C
kV
Innovative PowerTM
- 5 - www.active-semi.com
Copyright © 2015 Active-Semi, Inc.
5 Page 
ACT4528
Rev1.2, December 28th, 2015
TYPICAL PERFORMANCE CHARACTERISTICS
(Schematic as show in typical application circuit, Ta = 25°C, unless otherwise specified)
Output Over Voltage (5V Vout)
Start up into CC Mode
CH1
CH2
CH1: VOUT, 1V/div
CH2: SW, 10V/div
TIME: 1ms/div
Load Transient (80mA-1A-80mA)
Vin=12V, Vout=5V
CH1
VOUT = 5.1V
RLORD = 1.5Ω
IOUT = 2.65A
VIN = 12V
CH2
CH3
CH1: VIN, 10V/div
CH2: VOUT, 2V/div
CH3: IOUT, 2A/div
TIME: 400µs/div
Load Transient (1A-2.4A-1A)
Vin=12V, Vout=5V
CH1
CH1
CH2
CH1: VOUT, 100mV/div
CH2: IOUT, 1A/div
TIME: 400us//div
Load Transient (80mA-1A-80mA)
Vin=12.6V, Vout=12V
CH1
CH2
CH1: VOUT, 200mV/div
CH2: IOUT, 1A/div
TIME: 400us//div
Load Transient (1A-2.4A-1A)
Vin=12.6V, Vout=12V
CH1
CH2
CH1: VOUT, 200mV/div
CH2: IOUT, 1A/div
TIME: 400us//div
Innovative PowerTM
CH2
- 11 -
CH1: VOUT, 200mV/div
CH2: IOUT, 1A/div
TIME: 400us//div
www.active-semi.com
Copyright © 2015 Active-Semi, Inc.
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet ACT4528.PDF ] | |
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