Data Sheet
300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR
AP2126
General Description
The AP2126 series are positive voltage regulator ICs
fabricated by CMOS process.
The AP2126 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.
AP2126 is available in 1.25V to 5.5V adjustable
voltage versions.
AP2126 series are available in SOT-23-5 Package.
Features
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Wide Operating Voltage: 3.0V 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: 80μVrms@V
OUT
=1.25V
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
Applications
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Datacom
Notebook Computers
Mother Board
SOT-23-5
Figure 1. Package Type of AP2126
Sep. 2012 Rev. 1. 5
1
BCD Semiconductor Manufacturing Limited
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
