NOT RECOMMENDED FOR NEW DESIGN
USE AP7343
AP131
300mA LOW DROPOUT LINEAR REGULATOR WITH SHUTDOWN
Description
Pin Assignments
The AP131 is a 300mA, fixed output voltage, low dropout linear
regulator. The Device included pass element, error amplifier, bandgap, current limit and thermal shutdown circuitry. The device is ON
when the EN pin is set to logic high level.
( Top View )
IN
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.
1
EN 3
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Notes:
4
BP
SOT25
Applications
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•
OUT
GND 2
Features
Input Voltage Range is from 2.7V 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/
2.9V/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 package: SOT25
SOT25: Available in “Green” Molding Compound
(No Br, Sb)
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
Halogen and Antimony Free. “Green” Device (Note 3)
5
Battery Powered Device
Wireless Communication
CD-ROM, DVD, and LAN Card
PC Peripheral
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS), 2011/65/EU (RoHS 2) & 2015/863/EU (RoHS 3) compliant.
2. See https://www.diodes.com/quality/lead-free/ for more information about Diodes Incorporated’s definitions of Halogen- and Antimony-free, "Green" and
Lead-free.
3. Halogen- and Antimony-free "Green” products are defined as those which contain
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