Diodes AP2132B - Manual

Data Sheet
2A CMOS LDO REGULATOR AP2132B
Oct. 2012 Rev. 1. 1 BCD Semiconductor Manufacturing Limited
1
General Description
The AP2132B series are positive voltage regulator
ICs fabricated by CMOS process. The ICs consist of
a voltage reference, an error amplifier, a power
transistor, a resistor network for setting output
voltage, a current limit circuit for current protection,
and a chip enable circuit.
The AP2132B series have features of large current,
low dropout voltage, high output voltage accuracy,
low input voltage. The AP2132B provides a power
good (PG) signal to indicate if the voltage level of
V
OUT
reaches 92% of its rating value. And it operates
with V
IN
as low as 1.4V and V
CTRL
voltage 5V with
output voltage programmable as low as 0.8V.
The AP2132B are available in 1.2V, 1.5V, 1.8V, 2.5V
fixed output voltage versions and adjustable output
voltage version. The fixed versions integrate the
adjust resistors. It is also available in an adjustable
version, which can set the output voltage with
external resistor. If the pin of adjustable output
voltage is to ground, it will switch to fixed output
voltage.
AP2132B series are available in PSOP-8 package.
Features
•
Adjustable Output: 0.8V to 3.0V
• Low Dropout Voltage: 300mV@ I
OUT
=2A,
V
OUT
=1.2V
• Over Current and Over Temperature Protection
• Enable Pin
• PSOP-8 Package with Thermal Pad
• Maximum Output Current: 2A
• High Output Voltage Accuracy: 2%
• V
OUT
Power Good Signal
• Excellent Line/Load Regulation
Applications
• Notebook
Figure 1. Package Type of AP2132B
PSOP-8