Dual-Channel, 3.3V/500mA and 2.5V/300mA Linear Regulator

Copyright

 ANPEC Electronics Corp.

Rev. A.5 - Oct., 2003

APL5521

www.anpec.com.tw

1

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.

Features

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.

Applications

•

Desktop Computer

•

Networking Systems

•

Optical Data Storage Systems

•••••

Fixed Output Voltage :

•••••

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)

•••••

•••••

No Protection Diodes Needed

•••••

Built in Thermal Protection

•••••

Built in Current Limit Protection

•••••

Fast transient Response

•••••

Short Setting Time

•••••

SOP-8 Package Available

Pin Configuration

APL5521

1

2

3

45

6

7

8

GND

GND

GND

GND

SOP

− 8

Ordering and Marking Information

A P L5521

H a n d ling C o de

T e m p . R ang e

P a c k a ge C o de

P a c k a ge C o de

K : S O -8

O pera tin g J unc tio n T e m p . R ang e

C : 0 to 1 5 0 ° C

H a n d ling C o de

T U : T u b e

T R : T a p e & R e e l

Le ad F ree C o de

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

APL 5 5 2 1 K :

APL 5 5 2 1

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Le ad Free C ode