Low IQ, Low Dropout 560mA Fixed Voltage Regulator
Copyright ANPEC Electronics Corp.
Rev. A.4 - Apr., 2003
APL5508/5508R/5509/5509R
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-223 (Top View)
APL5509
V
IN
GND
V
OUT
123
TAB is GND
Features
The APL5508/9/R series are micropower, low dropout linear regulators, which operate from 2.7V to 6V
input voltage and deliver up to 560mA. Typical dropout voltage is only 600mV at 560mA 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 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 specified output current and controlled short-circuit current.
The APL5508/9/R regulators come in a miniature SOT23, SOT-89 and SOT-223 packages.
Applications
• 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
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••
• Low Quiescent Current : 60µA (No load)
••
••
• Low Dropout Voltage : 600mV (@560mA)
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••
• 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 .
••
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• No Protection Diodes Needed
••
••
• Built in Thermal Protection
••
••
• Built in Current Limit Protection
••
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• Controlled Short Circuit Current : 50mA
••
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• Fast Transient Response
••
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• Short Setting Time
••
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• SOT-23, SOT-89 and SOT-223 Packages
Pin Configuration
General Description
SOT-23 (Top View)
GND
12
3
V
OUT
V
IN
APL5508
SOT-23 (Top View)
APL5509
GND
12
3
V
OUTVIN
APL5508
SOT-89 (Top View)
GND VIN V OUT
123
TAB is V
IN
APL5509
SOT-89 (Top View)
GND VINV OUT
123
TAB is GND
SOT-223 (Top View)
APL5508
V
OUT
V
IN
GND
123
TAB is V
IN
SOT-223 (Top View)
APL5509R
V
OUT
GND
V
IN
123
TAB is GND
SOT-223 (Top View)
APL5508R
V
IN
V
OUT
GND
123
TAB is V
OUT