Diodes AP2127 User Manual
Ap2127, Description, Applications
AP2127
Document number: DS36478 Rev. 3 - 2
1 of 27
January 2014
© Diodes Incorporated
AP2127
A Product Line of
Diodes Incorporated
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
Description
The AP2127 Series are positive voltage regulator ICs fabricated by
CMOS process.
The AP2127 Series have features of low dropout voltage, low noise,
high output voltage accuracy, and low current consumption which
make them ideal for use in various battery-powered devices.
AP2127 has 1.0V, 1.2V, 1.5V, 1.8V, 2.5V, 2.8V, 3.0V, 3.3V, 4.2V,
4.75V, 5.2V fixed voltage versions and 0.8V to 5.5V adjustable
voltage versions.
AP2127 Series are available in SOT-23 (for fixed versions only),
SOT-23-3 (for fixed versions only), SOT-23-5, SOT-89 (for fixed
versions only) and DFN-2x2-6 packages.
Applications
• Datacom
• Notebook
Computers
• Mother
Board
Features
•
Wide Operating Voltage: 2.5V to 6V
•
High Output Voltage Accuracy: ±2%
•
High Ripple Rejection:
68dB @ f = 1kHz, 54dB @ f = 10kHz
•
Low Standby Current: 0.1μA
•
Low Dropout Voltage: 170mV @ 300mA for V
OUT
= 3.3V, 140mV
@ 300mA for V
OUT
= 5.2V
•
Low Quiescent Current: 60μA Typical
•
Low Output Noise: 60μV
RMS
@V
OUT
= 0.8V
•
Short Current Limit: 50mA
•
Over Temperature Protection
•
Compatible with Low ESR Ceramic Capacitor:
1μF for C
IN
and C
OUT
•
Excellent Line/Load Regulation
•
Soft Start Time: 50μs
•
Auto Discharge Resistance: R
DS(ON)
= 60Ω
•
Totally Lead-Free & Fully RoHS Compliant (Notes 1 & 2)
•
Halogen and Antimony Free. “Green” Device (Note 3)
Notes:
1. No purposely added lead. Fully EU Directive 2002/95/EC (RoHS) & 2011/65/EU (RoHS 2) compliant.
2. See 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 <900ppm bromine, <900ppm chlorine (<1500ppm total Br + Cl) and
<1000ppm antimony compounds.
Pin Assignments
(Top View) (Top View)
(SOT-23/SOT-23-3/ N/N3 Package) (SOT-23-5/ K Package)
(Top View) (Top View) (Top View)
(SOT-89 Option 1/ R Package) (SOT-89 Option 2/ R Package) (DFN-2x2-6/ DN Package)
3
2
1
V
IN
V
OUT
GND
1
2
3
4
5
V
IN
GND
V
OUT
Shutdown
NC/ADJ
1
2
3
GND
V
IN
V
OUT
1
2
3
GND
V
IN
V
OUT
P in 1 Mark
1
2
3
4
5
6
V
OUT
NC
NC
EN
GND
V
IN