APL5508/5508R/5509/5509R
Low I
Q
, Low Dropout 560mA Fixed Voltage Regulator
Features
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Low Quiescent Current : 60µA (No load)
Low Dropout Voltage : 600mV (@560mA)
Very low Shutdown Current : < 0.5uA
Fixed Output Voltage : 1.5V ~ 4.5V
by step 0.1V increment
Stable with 1uF Output Capacitor
Stable with Aluminum, Tantalum or Ceramic
Capacitors .
No Protection Diodes Needed
Built in Thermal Protection
Built in Current Limit Protection
Controlled Short Circuit Current : 50mA
Fast Transient Response
Short Setting Time
SOT-23, SOT-89 and SOT-223 Packages
General Description
The APL5508/9/R series are micropower, low drop-
out linear regulators, which operate from 2.7V to 6V
input voltage and deliver up to 560mA. Typical drop-
out voltage is only 600mV at 560mA loading. De-
signed for use in battery-powered system, the low
60µA quiescent current makes it an ideal choice.
Design with an internal P-channel MOSFET pass
transistor, the APL5508/9/R maintain a low supply
current, independent of the load current and dropout
voltage. Other features include thermal-shutdown
protection, current limit protection to ensure speci-
fied output current and controlled short-circuit current.
The APL5508/9/R regulators come in a miniature SOT-
23, SOT-89 and SOT-223 packages.
Applications
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5V to 3.3~4.3V Linear Regulators
3.3V to 1.5~2.5V Linear Regulators
CD-R/W, DVD Player
LAN Card, ADSL/Cable Modem
Computers
T A B is V
I N
T A B is V
O U T
Pin Configuration
V
IN
3
1
2
V
OUT
1
2
3
T A B is V
IN
1
2
3
1
2
3
G ND
GND
V
IN
V
O UT
GND
V
IN
V
OUT
GND
V
OUT
V
IN
SOT-23 (Top View)
APL5508
G ND
3
1
V
OUT
2
V
IN
SOT-89 (Top View)
APL5508
SOT-223 (Top View)
APL5508
T A B is G N D
SOT-223 (Top View)
APL5508R
T A B is G N D
T A B is G N D
1
2
3
1
V
OUT
GND
V
IN
2
3
1
2
3
V
OUT
GND
V
IN
V
IN
GND
V
OUT
SOT-23 (Top View)
APL5509
SOT-89 (Top View)
APL5509
SOT-223 (Top View)
APL5509
SOT-223 (Top View)
APL5509R
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.6 - Mar., 2004
1
www.anpec.com.tw
ANPEC [ ANPEC ELECTRONICS COROPRATION ]
