Diodes AP2120 - Manual

Data Sheet
1
Mar. 2013 Rev. 1. 4 BCD Semiconductor Manufacturing Limited
HIGH SPEED, EXTREMELY LOW NOISE LDO REGULATOR AP2120
General Description
The AP2120 series are positive voltage regulator ICs
fabricated by CMOS process. Each of these ICs con-
sists of a voltage reference, an error amplifier, a resis-
tor network for setting output voltage, a current limit
circuit for current protection.
The AP2120 series feature high supply voltage ripple
rejection, low dropout voltage, low noise, high output
voltage accuracy, and low current consumption which
make them ideal for use in various battery-powered
devices.
The AP2120 series have 1.2V, 1.3V, 1.5V, 1.8V, 2.5V,
2.8V, 3.0V, 3.2V, 3.3V, 3.6V, 4.0V and 5.0V versions.
The AP2120 are available in standard SOT-23, SOT-89
and TO-92 packages.
Features
· Low Dropout Voltage at I
OUT
=100mA: 200mV
Typical (Except 1.2V, 1.3V and 1.5V Versions)
· Low Quiescent Current: 25 μA Typical
· High Ripple Rejection: 65dB Typical （f=1kHz）
· Output Current: More Than 150mA (250mA
Limit)
· Extremely Low Noise: 15 μVrms@V
OUT
=1.2V,
1.3V, 1.5V (10Hz to 100kHz)
· Excellent Line Regulation: 4mV Typical
· Excellent Load Regulation: 12mV Typical
· High Output Voltage Accuracy: ±2%
· Excellent Line Transient Response and Load
Transient Response
· Compatible with Low ESR Ceramic Capacitor (as
Low as 1
μF)
Applications
· Mobile Phones, Cordless Phones
· Wireless Communication Equipment
· Portable Games
· Cameras, Video Recorders
· Sub-board Power Supplies for Telecom Equip-
ment
· Battery Powered Equipment
Figure 1. Package Types of AP2120
SOT-23 TO-92 (Bulk Packing) TO-92 (Ammo Packing) SOT-89