APL5521
Dual-Channel, 3.3V/500mA and 2.5V/300mA Linear Regulator
Features
•
Fixed Output Voltage :
V
OUT1
=3.3V/500mA
•
V
OUT2
=2.5V/300mA
Low Dropout Voltage (defined as the minimum
input/output voltage difference):
Output 1 Dropout Voltage : 1.25V (at 500mA)
Output 2 Dropout Voltage : 1.2V (at 300mA)
•
•
•
•
•
•
•
Stable with 10uF Output Capacitor(at V
OUT1
)
Stable with 10uF Output Capacitor(at V
OUT2
)
No Protection Diodes Needed
Built in Thermal Protection
Built in Current Limit Protection
Fast transient Response
Short Setting Time
SOP-8 Package Available
General Description
The APL5521 is a dual low dropout regulator with
output 1 with 3.3V/0.5A and output2 with 2.5V/0.3A
output capability. In order to obtain lower dropout
voltage and faster transient response, which is criti-
cal for low voltage applications, the APL5221 has
been optimized. The dropout voltages are guaran-
teed at 1.25V at 0.5A for output1 and 1.2V 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 APL5521 regu-
lator comes in a SOP-8 package.
Pin Configuration
SOP
−
8
Applications
•
•
•
Desktop Computer
Networking Systems
Optical Data Storage Systems
V
O U T1
V
IN
V
IN
V
O U T2
1
2
3
4
8
7
6
5
G ND
G ND
G ND
G ND
APL5521
Ordering and Marking Information
APL5521
L e a d F re e C o d e
H a n d lin g C o d e
Tem p. R ange
P a ck ag e C od e
A P L5521
XXXXX
P ackage C ode
K : S O -8
O p e ra tin g J u n c tio n T e m p . R a n g e
C : 0 to 1 5 0 ° C
H a n d lin g C o d e
TU : Tube
TR : Tape & R eel
L e a d 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 rig in a l D e v ic e
X X X X X - D a te C o d e
A P L5521 K :
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.5 - Oct., 2003
1
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
