Diodes AP2129 - Manual

300mA HIGH SPEED, EXTREMELY LOW NOISE CMOS LDO REGULATOR AP2129
Data Sheet
1
Sep. 2012 Rev. 1. 6 BCD Semiconductor Manufacturing Limited
General Description
The AP2129 is a 300mA, positive Voltage regulator
ICs fabricated by CMOS process. The AP2129
provides two kinds of output voltage operation modes
for setting the output voltage. Fixed output voltage
mode senses the output voltage on V
OUT
, adjustable
output voltage mode needs two resistors as a voltage
divider
The AP2129 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.
AP2129 has 1.0V, 1.2V, 1.8V, 2.6V, 2.8V, 3.0V and
3.3V fixed voltage version and 0.8V to 4.5V adjustable
voltage version.
The AP2129 series are available in DFN-1.5x2-6
(1.0V, 1.2V, 1.8V, 2.6V, 2.8V, 3.0V, 3.3V) and SOT-23-
5 (1.0V, 1.2V, 3.3V, ADJ) packages.
Features
· Wide Operating Voltage: 1.8V to 6V
· High Output Voltage Accuracy: ±2%
· High Ripple Rejection:
65dB@ f=1kHz, 45dB@ f=10kHz
· Low Standby Current: 0.1 μA
· Low Quiescent Current: 60 μA Typical
· Low Output Noise: 60 μVrms
· Short Current Limit: 50mA
· Over Temperature Protection
· Compatible with Low ESR Ceramic Capacitor:
1
μF for C
IN
and C
OUT
· Excellent Line/Load Regulation
· Soft Start Time : 50 μs
· Auto Discharge Resistance: R
DS(ON)
=60 Ω
Applications
· Datacom
· Notebook Computers
· Mother Board
Figure 1. Package Type of AP2129
SOT-23-5 DFN-1.5x2-6