Low IQ, Low Dropout 300mA Fixed Voltage Regulator
Copyright ANPEC Electronics Corp.
Rev. A.10 - Dec., 2008
APL5308/9
www.anpec.com.tw1
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.
SOT-23-3 (Top View)
APL5309
GND
1 2
3
VOUT VIN
APL5309
SOT-89 (Top View)
GND VINVOUT
1 2 3
TAB is GND
Features
The APL5308/9 series are micropower, low dropout lin-
ear regulators, which operate from 2.7V to 6V input volt-
age and deliver up to 300mA. Typical dropout voltage
is only 400mV at 300mA loading. Designed for use in
battery-powered system, the low 60µA quiescent cur-
rent makes it an ideal choice. Design with an internal P-
channel MOSFET pass transistor, the APL5308/9 maintain
a low supply current, independent of the load current and
dropout voltage. Other features include thermal-shut-
down protection current limit protection to ensure
specified output current and controlled short-circuit
current. The APL5308/9 regulators come in a minia-
ture SOT-23-3, SOT-23-5, and SOT-89 packages.
Applications
•Low Quiescent Current : 60µA (No load)
•Low Dropout Voltage : 400mV (@300mA)
•Fixed Output Voltage : 1.5V ~ 4.5V by Step 0.1V
Increment
•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-23-3, SOT-23-5, and SOT-89 Packages
•Lead Free and Green Devices Available
(RoHS Compliant) Pin Configuration
SOT-23-3 (Top View)
GND
1 2
3
VOUT
VIN
APL5308
General Description
VIN GND
VOUT NC
NC
1 2 3
45
SOT-23-5 (Top View)
APL5309
APL5308
SOT-89 (Top View)
GND VIN VOUT
1 2 3
TAB is VIN
VINGND VOUT
NCNC
1 2 3
45
SOT-23-5 (Top View)
APL5308
•5V to 3.3~4.5V Linear Regulators
•3.3V to 1.5~2.5V Linear Regulators
•CD-ROM, CD-R/W, and DVD Player
•Networking System, LAN Card, ADSL/Cable
•Modem, Cable Set-Top Box
•PC Peripherals