AP131
300mA LOW DROPOUT LINEAR REGULATOR WITH
SHUTDOWN
General Description
Features
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Input Voltage Range is up 2.7 to 5.5V
Dropout Voltage 400mV at 300mA Output Current
Guaranteed 300mA Output Current
Internal Ron = 1.5Ω PMOS draws no Base Current
Low Quiescent Current 50µA
Output Voltage: 1.5V/1.8V/2.0V/2.5V/2.8V/3.0V/3.3V/
3.5V; Accuracy 2%
Active Low Shutdown Function (EN pin)
Fast Transient Response
Good Load Regulation
Current Limit and Thermal Shutdown Protection
Short Circuit Current Fold-Back
Lead-Free and Green Package: SOT89-5L is
available in Lead-Free only. SOT25 is available in both
Lead-Free and Green (Note 1).
The AP131 is a 300mA, fixed output voltage, low dropout linear
regulator. The Device included pass element, error amplifier,
band-gap, current limit and thermal shutdown circuitry. The
device is ON when the EN pin is set to logic high level.
The characteristics of low dropout voltage and less quiescent
current make it good for some critical current applications, for
example, some battery powered devices. The typical quiescent
current is approximately 50µA from zero to maximum load. Due
to the internal flexible design, it results in extensively fixed output
voltage versions and makes it convenient to use for applications.
Built-in current-limit and thermal- shutdown functions prevent any
fault condition from IC damage. An external capacitor can be
connected to the BP pin and reduce the output noise.
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Ordering Information
AP131 - XX X X X
Package
Output Voltage
Lead Free
Packing
Y : SOT89-5L
W : SOT 25
-7/-13 : Taping
L : Lead Free Package
G:Green (Note 2)
15 :1.5V
18 :1.8V
20 :2.0V
25 :2.5V
28 :2.8V
30 :3.0V
33 :3.3V
35 :3.5V
Note:
1. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
2. Green is only available for SOT 25.
7” Tape and Reel
Part
13” Tape and Reel
Part
Device
Package Packaging
Code
(Note 3)
Quantity
Number
Quantity
Number
Suffix
Suffix
AP131-XXY
AP131-XXW
Y
W
SOT89-5L
SOT25
NA
NA
2500/Tape & Reel
NA
-13
Lead-free
3000/Tape & Reel
-7
NA
Note:
3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website
at http://www.diodes.com/datasheets/ap02001.pdf.
AP131 Rev. 1
1 of 7
NOVEMBER 2006
www.diodes.com
© Diodes Incorporated