Diodes AP2138/2139 - Manual

ULTRA LOW QUIESCENT CURRENT CMOS LDO AP2138/2139
Data Sheet
1
Jul. 2012 Rev. 2. 3 BCD Semiconductor Manufacturing Limited
Figure 1. Package Types of AP2138/2139
SOT-23-3
General Description
The AP2138/2139 series are CMOS-based positive
voltage regulator ICs. Each of these ICs consists of a
voltage reference, an error amplifier, a resistor network
for setting output voltage and a current limit circuit for
current protection.
The difference between AP2138 and AP2139 is the
AP2139 has an enable circuit with a quick discharge
function.
These ICs feature high output voltage accuracy,
extremely low quiescent current and low dropout volt-
age which make them ideal for use in various power
sources for portable applications.
The AP2138/2139 series have 1.2V, 1.4V, 1.5V, 1.8V,
2.5V, 2.8V, 3.0V, 3.3V, 3.6V and 4.0V fixed output
voltage versions.
The AP2138 series is available in SOT-23-3 and SOT-
89
packages, AP2139 series is available in SOT-23-5
package.
Features
· Ultra-low Quiescent Current: 1.0 μA Typical
· Output Voltages: 1.2V, 1.4V, 1.5V, 1.8V, 2.5V,
2.8V, 3.0V, 3.3V, 3.6V and 4.0V
· High Output Voltage Accuracy: ±2%
· Output Current: 250mA
· Low Dropout Voltage:
25mV Typical at I
OUT
=10mA and V
OUT
=3V
200mV Typical at I
OUT
=100mA and V
OUT
=3V
· Line Regulation: 6mV Typical
· Load Regulation: 25mV Typical
· Low Output Voltage Temperature Coefficient:
±100ppm/
o
C
· Low Standby Current: 0.1 μA Typical (AP2139)
· Active Quick Output Discharge (AP2139)
· Logic-controlled Enable (AP2139)
Applications
· Battery Powered Equipment
· Reference Voltage Sources
· Cameras, Video Cameras
· Portable AV Systems
· Mobile Phones
· Communication Tools
· Portable Games
SOT-23-5 SOT-89