Low IQ, Low Dropout 300mA Fixed Voltage Regulator
Copyright ANPEC Electronics Corp.
Rev. A.5 - Apr., 2003
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 (T op V iew)
APL5309
GND
12
3
V
OUTVIN
APL5309
SOT-89 (T op View)
GND VINVOUT
123
TAB is GND
Features
The APL5308/9 series are micropower, low dropout
linear regulators, which operate from 2.7V to 6V input voltage 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 current 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-shutdown protection current
limit protection to ensure specified output current and
controlled short-circuit current. The APL5308/9 regu-
lators come in a miniature SOT-23, SOT-23-5 and
SOT-89 packages.
Applications
• 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
••
••
• 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 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-23-5 and SOT-89 Packages
Pin Configuration
SOT-23 (T op V iew)
GND
12
3
V
OUT
V
IN
APL5308
General Description
V
IN
GND
V
OUT
NC
NC
123
45
SOT-23-5 (T op V iew)
APL5309
APL5308
SOT-89 (T op View)
GND VIN VOUT
123
TAB is V
IN
V
IN
GND V
OUT
NCNC
123
45
SOT-23-5 (T op V iew)
APL5308