ACT4503YH-T 查看數據表（PDF） - Unspecified
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ACT4503YH-T Datasheet PDF : 55 Pages
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ACT4501 5V/1.0A Smart Phone Car Charger
Bill of Materials
REF
DESCRIPTION
L1
Choke Coil, ring core:8*4*5mm, Pi=0.35mm, L=82uH, dip
D1
C1
C2
C3
C4
C5
C6
C7
C8
R1
R2
R3
R5
R6
RA
RB/RD
RC
U1
USB
Schottky Diode, B240A, 2A/40V, SMA
Capacitor,Electrolytic, 100uF/35V, Φ7x8mm, Dip
Ceramic capacitor, 10uF/35V, X7R, 0805
Ceramic capacitor, 1nF/25V, X7R, 0603
Ceramic capacitor, 10nF/16V, X7R, 0603
Ceramic capacitor, 2.2nF/16V, X7R, 0603
Ceramic capacitor, 100pF/16V, X7R, 0603
Ceramic capacitor, 10uF/10V, X7R, 0805
Ceramic Electrolytic, 220uF/10V, Φ6.3x7mm, Dip
Chip Resistor, 1KΩ, 1/10W, 5%, 0603
Chip Resistor, 19.6KΩ, 1/10W, 1%, 0603
Chip Resistor, 25KΩ, 1/10W, 1%, 0603
Chip Resistor, 51KΩ, 1/10W, 1%, 0603
Chip Resistor, 9.76KΩ, 1/10W ,5%, 0603
Chip Resistor, 75KΩ, 1/10W, 1%, 0603
Chip Resistor, 49.9KΩ, 1/10W, 1%, 0603
Chip Resistor, 43.2KΩ, 1/10W, 1%, 0603
IC, ACT4501, SOP-8
15mm*10mm*8mm
PCB Top Layer
MFTR
Haining
Electronic-
Magnetics
Diodes
KSC
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Murata/TDK
Active semi
USB Manu
3) Place feedback resistor close to FB pin.
4) Use short trace connecting HSB-C4-SW loop.
5) SW pad is a noisy node switching from Vin to GND. It should
be isolated away from the rest of circuit for good EMI and low
noise operation.
Typical performance characteristics
100
90
80
70
60
50
40
30
20
10
0
10
6
5
4
3
2
Vin=12V
1
Vin=16V
Vin=24V
0
0
200
400
Efficiency
100
Iout(mA)
CC CV Curve
Vin=12V
Vin=24V
1000
600
800
1000
Load current(mA)
1200
1400
1600
Radiated EMI Test
PCB Bottom Layer
PC Board Layout Guidance
1) Arrange the power components to reduce the AC loop size
that consists of CIN, IN pin, SW pin the Schottky diode.
2) Place input decoupling ceramic capacitor CIN as close to IN
pin as possible. CIN is connected power GND with vias or
short and wide path.
EVALUATION KITS
Vin
Car Charger ACT4501-DMB-#1 10-28V
Vo
Io
4.75-5.25V 1000mA
10
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