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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 APL5101/2 are micro-power, ultra low dropout linear regulator, which operate from 2V to 6V input voltage and deliver up to 150mA. Typical dropout voltage is only 200mV at 150mA loading. Designed for use in battery-powered system, the low 4µA quiescent current makes it an ideal choice. Design with an internal P-channel MOSFET pass transistor,the APL5101/2 maintain a low supply current,independ
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ent of the load current and dropout voltage.Other features include thermal-shutdown protection and current limit protection to ensure specified output current and controlled short-circuit current.The APL5101/2 regulator come in a miniature SOT-23,SOT-23-5 and SOT-89 packages.
Applications
•Hand-held Equipment •RTC or CMOS Backup Power •
Battery Powered Equipment
Pin Configuration
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SOT-23-5
•Ultra Low Quiescent Current: 4µA •Ultra Low Dropout Voltage:200mV@3.3V/150mA
•Fixed Output Voltages: 1.2V~3.5V,steps 100mV
•Guaranteed 150mA Output Current •Stable with 1µF Output Capacitor •Ceramic Capacitor can be used •Current Limit Protection
•Controlled Short Circuit Current: 50mA •Build in Thermal Protection
•SOT-23, SOT-23-5 and SOT-89 packages •
Lead Free Available (RoHS Compliant)
SOT-23
APL5102
APL5101SOT-23
APL5101GND V OUT
V
IN APL5101SOT-89
V OUT
GND
V IN
1
2
3
V OUT
GND
V IN
1
3
V IN GND SHDN
NC
V OUT
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4
5
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Ordering and Marking Information
SOT-23 and SOT-23-5 packages
Note:  ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS and compatible with both SnPb and lead-free soldiering operations. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J STD-020C for MSL classification at lead-free peak reflow temperature.
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3Pin Description
Absolute Maximum Ratings
Block Diagram
VIN
U T
S
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4Electrical Characteristics
Unless otherwise noted these specificatons apply over full temperature, V IN = 5V, C IN = C OUT = 1µF ,T A = -40 to 85°C. Typical values refer to T A = 25°C.
Note: Dropout voltage definition:V IN -V OUT  when V OUT  is 2% below the value of V OUT  for V IN = V OUT +1V.
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5Application Circuit
Application Characteristics
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Application Characteristics (Cont.)
+0
10
100k
1001k 10k Dropout Voltage vs. Output Current
D r o p o u t  V o l t a g e (m V )
Frequency(Hz)
P S R R (d B )
PSRR vs. Frequency