APL5523
Dual-Channel, 3.3V/500mA and 1.8V/300mA Linear Regulator
Features
•
Fixed Output Voltage :
V
OUT1
=3.3V/500mA
V
OUT2
=1.8V/300mA
Low Dropout Voltage (defined as the minimum
input/output voltage difference):
Output 1 Dropout Voltage : 0.6V (at 500mA)
Output 2 Dropout Voltage : 0.9V (at 300mA)
Stable with 4.7uF Output Capacitor(at V
OUT1
)
Stable with 2.2uF Output Capacitor(at V
OUT2
)
Built in Thermal Protection
Built in Current Limit Protection
Fast transient Response
Short Setting Time
SOP-8 and SOP-8-P Package Available
General Description
The APL5523 is a dual low dropout regulator with
output1 with 3.3V/0.5A and output2 with 1.8V/0.3A
output capability. In order to obtain lower dropout
voltage and faster transient response, which is criti-
cal for low voltage applications, the APL5223 has
been optimized. The dropout voltages are guaran-
teed at 0.6V at 0.5A for output1 and 0.9V at 0.3A for
output 2. Current limit is trimmed to ensure speci-
fied output current and controlled short-circuit current.
On-chip thermal limiting provides protection against
any combination of overload that would create ex-
cessive junction temperatures. The APL5523 regu-
lator comes in a SOP-8 and SOP-8-P package.
•
•
•
•
•
•
•
Pin Configuration
SOP−8 (Top View)
V
O U T 1
SOP-8-P (Top View)
V
O U T 1
1
2
3
4
8
7
6
5
Applications
V
G N D
G N D
G N D
G N D
1
2
3
4
8
7
6
5
N C
G N D
N C
N C
V
V
IN
V
V
V
IN
IN
IN
O U T 2
O U T 2
•
•
•
Desktop Computer
Networking Systems
Optical Data Storage Systems
= Thermal Pad
(connected to GND plane for better heat
dissipation)
Ordering and Marking Information
APL5523
L e ad F re e C o d e
H a n d lin g C o d e
T e m p. R an g e
P ackage C ode
P ackage C ode
K : S O P -8
K A : S O P -8-P
O pe ra ting J u nc tio n T e m p . R a ng e
C : 0 to 1 5 0° C
H a n d lin g C o d e
T U : T u be
TR : Tape & Reel
L e ad F re e C o d e
L : L e a d F re e D e v ic e
B la n k : O rigin a l D ev ic e
A P L 5 5 2 3 K /K A :
APL5523
XXXXX
X X X X X - D a te C od e
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise
customers to obtain the latest version of relevant information to verify before placing orders.
Copyright
ANPEC Electronics Corp.
Rev. A.1 - July., 2004
1
www.anpec.com.tw
APL5523
Pin Description
No.
1
2
3
4
5
6
7
8
PIN
Name
V
OUT1
V
IN
V
IN
V
OUT2
GND
GND
GND
GND
I/O
O
I
I
O
Description
V
OUT1
output Voltage 3.3V. sources up to 500 mA.
Supply Voltage.
Supply Voltage.
V
OUT2
output Voltage 1.8V. sources up to 300 mA.
Ground also functions as a heatsink. Solder to the ground plane to
maximize thermal dissipation
Absolute Maximum Ratings
Symbol
V
IN
, V
OUT
R
TH,JA
Parameter
Input Voltage or Out Voltage
Therm al Resistance – Junction to Am bient
SOP-8
SOP-8-P
R
TH,JC
Therm al Resistance – Junction to Case
SOP-8
SOP-8-P
PD
TJ
Power Dissipation
Operating Junction Tem perature
Control Section
Power Transistor
TSTG
TL
Storage Tem perature Range
Lead Tem perature (Soldering, 10 second)
150
75
30
5
Internally Lim ited
0 to 125
0 to 150
-65 to +150
260
°C
°C
W
°C
°C/W
°C/W
Rating
6
Unit
V
Electrical Characteristics
Unless otherwise noted these specifications apply over full temperature, C
IN
=1µF, C
OUT1
=4.7µF,
C
OUT2
=2.2µF, T
J
=0 to 125°C. Typical values refer to T
J
=25°C.
Symbol
V
IN
I
SHORT
OTS
Parameter
Input Voltage
Short Current
V
OUT
=0V
Over Temperature
Shutdown
Over Temperature
Hysteresis
Shutdown Hysteresis
Output Voltage
Temperature
Coefficient
Quiescent Current
I
OUT1
=500mA, I
OUT2
=300mA
I
OUT1
=0mA, I
OUT2
=0mA
2
Test Conditions
APL5523
Min.
2.7
50
150
20
Typ.
Max.
6
Unit
V
mA
°C
°C
ppm/°C
TC
100
900
100
1000
200
I
Q
µA
Copyright
ANPEC Electronics Corp.
Rev. A.1 - July., 2004
www.anpec.com.tw
APL5523
Electrical Characteristics (Cont.)
Unless otherwise noted these specifications apply over full temperature, C
IN
=1µF, C
OUT1
=4.7µF,
C
OUT2
=2.2µF, T
J
=0 to 125°C. Typical values refer to T
J
=25°C.
Symbol
Parameter
Test Conditions
APL5523
Min.
V
OUT
-2%
Typ.
3.3
900
Max.
V
OUT
+2%
Unit
Output1 (500mA)
V
OUT
I
LIMIT
I
OUT
Output Voltage
Circuit Current Limit
Load Current
V
IN
=5V
V
IN
=V
OUT
+1V
V
IN
=V
OUT
+1V
V
OUT
+1V< V
CC
<6.0V, I
OUT
=1mA
V
IN
=V
OUT
+1V, 0mA< I
OUT
< I
MAX
F≤1kHz, 1Vpp at I
OUT
=50mA
I
OUT
=500mA
0.01
V
IN
=5V
V
IN
=V
OUT
+1V
V
IN
=V
OUT
+1V
V
OUT
+1V< V
CC
<6.0V, I
OUT
=1mA
V
IN
=V
OUT
+1V, 0mA< I
OUT
< I
MAX
F≤1kHz, 1Vpp at I
OUT
=50mA
I
OUT
=300mA
0.01
45
V
OUT
-2%
V
mA
mA
500
5
40
40
48
0.6
4.7
0.1
1.8
900
300
4
20
55
0.9
2.2
0.1
1
1
10
40
0.7
1
V
OUT
+2%
REG
LINE
Line Regulation
REG
LOAD
Load Regulation
PSRR Ripple Rejection
V
DROP
Dropout Voltage
C
OUT
Output Capacitor
ESR
Output2(300mA)
V
OUT
I
LIMIT
I
OUT
Output Voltage
Circuit Current Limit
Load Current
(Note1)
10
60
mV
mV
dB
V
µF
Ohm
V
mA
mA
mV
mV
dB
V
µF
Ohm
REG
LINE
Line Regulation
REG
LOAD
Load Regulation
PSRR Ripple Rejection
V
DROP
Dropout Voltage
C
OUT
Output Capacitor
ESR
(Note1)
Note1 : Dropout voltage definition : V
IN
-V
OUT
when V
OUT
is 2% below the value of V
OUT
for V
IN
= V
OUT
+1V
Application Circuit
V
OUT1
4.7
µ
F
V
IN
1µ
F
1
8
2
7
3
6
V
OUT2
2.2
µ
F
4
APL5523
5
Copyright
ANPEC Electronics Corp.
Rev. A.1 - July., 2004
3
www.anpec.com.tw
1
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