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AP3503EMPTR-G1
P1-P3
P4-P6
P7-P9
P10-P11
P
r
e
l
i
m
i
n
a
r
y
D
a
t
a
s
h
e
e
t
340kHz,
3A
Synchronous
DC-DC
Buck
Converter AP3503E
May
.
2012 Rev
.
1.
6
BCD
Semiconductor
Manufacturing
Limited
7
Typical Performance Characteristics (Continued)
T
A
=25ºC, V
IN
=12V, V
OUT
=3.3V, unless otherwise no
ted.
Figure
8.
Output
V
oltage
vs. Figure
9.
Maximum
Load
Curre
nt
vs.
Input
V
oltage Input
V
oltage
Figure 10. Output Ripple (I
OUT
=
3
A
)
F
i
g
u
r
e
1
1
.
L
o
a
d
T
r
a
n
s
i
e
n
t
(
I
OUT
=1.5 to 3A)
4
8
12
16
20
3.0
3.1
3.2
3.3
3.4
3.5
3.6
Output Voltage (V)
Input
Voltage (V)
I
OUT
=1.5A
4
8
12
16
20
1
2
3
4
5
6
Maximum Loa
d Current (A)
Input Voltage
(V)
V
OUT
=3.3V
L=10
µ
H
T
ime 200
µ
s/div
Ti
me
2
µ
s/
div
V
IN
(AC)
200mV/div
V
OUT
(AC)
10mV/div
I
L
1A/div
I
OUT
1A/div
V
OUT
(AC)
100mV/div
V
SW
10V/div
P
r
e
l
i
m
i
n
a
r
y
D
a
t
a
s
h
e
e
t
340kHz,
3A
Synchronous
DC-DC
Buck
Converter AP3503E
May
.
2012 Rev
.
1.
6
BCD
Semiconductor
Manufacturing
Limited
8
Typical Performance Characteristics (Continued)
T
A
=25ºC, V
IN
=12V, V
OUT
=3.3V, unless otherwise no
ted.
Figure
12.
Enable
Turn-on
Characteristic
Figure
13.
Enable
Turn-off
Character
istic
(V
IN
=12V
, V
EN
=3.3V
, V
OUT
=3.3V
, I
OUT
=
3
A
)
(
V
IN
=12V
, V
EN
=3.3V
, V
OUT
=3.3V
, I
OUT
=3A)
Figure 14. Short Circuit Protection (I
OUT
=
3
A
)
F
i
g
u
r
e
1
5
.
S
h
o
r
t
C
i
r
c
u
i
t
R
e
c
o
v
e
r
y
(
I
OUT
=3A)
T
ime 200
µ
s/div
T
ime 10ms/div
V
OUT
2V/div
I
L
2A/div
V
SS
2V/div
V
EN
2V/div
V
OUT
2V/div
I
L
2A/div
V
SS
2V/div
V
EN
2V/div
T
ime 100ms/div
T
ime 100ms/div
V
OUT
2V/div
I
L
2A/div
V
SW
10V/div
V
OUT
2V/div
I
L
2A/div
V
SW
10V/div
V
SS
1V/div
V
SS
1V/div
P
r
e
l
i
m
i
n
a
r
y
D
a
t
a
s
h
e
e
t
340kHz,
3A
Synchronous
DC-DC
Buck
Converter AP3503E
May
.
2012 Rev
.
1.
6
BCD
Semiconductor
Manufacturing
Limited
9
Typical Application
C3
3.3nF
C12
10µF/25V
C22
22µF/25V
D1
Optional
L 10µH
R4
100k
R2
10k
R1
26.1k
R3
13k
C6
Optional
C4
10nF
C5
0.1µF
3
5
1
6
7
8
2
4
AP3503E
BS
IN
SW
GND
FB
COMP
EN
SS
C21
22µF/25V
C11
10µF/25V
Input Voltage=12V
Output Voltage=3.3V
Figure 16. Typical Application
of AP3503E
P1-P3
P4-P6
P7-P9
P10-P11
AP3503EMPTR-G1
Mfr. #:
Buy AP3503EMPTR-G1
Manufacturer:
Diodes Incorporated
Description:
Switching Voltage Regulators 340kHz 3A Sync DC/DC 4.5V to18V
Lifecycle:
New from this manufacturer.
Delivery:
DHL
FedEx
Ups
TNT
EMS
Payment:
T/T
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Union
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