Diodes AZ39151 - Manual

1
Dec. 2011 Rev. 1. 9 BCD Semiconductor Manufacturing Limited
Data sheet
1.5A ULTRA LOW DROPOUT LINEAR REGULATOR AZ39151
General Description
The AZ39151 is a 1.5A, high accuracy linear voltage
regulator. It features 375mV dropout voltage at 1.5A
output current and low ground current over all operat-
ing conditions .
The AZ39151 is specifically designed for low voltage,
high current output systems, such as PC add-in cards
where their tiny dropout voltage and ground current
values are important attributes.
The AZ39151 has fixed 3.3V, 5.0V versions and
ADJ(1.25V) version.
The AZ39151 is available in TO-252-4 (PPAK) (for
fixed versions) and TO-252-5 (for adjustable version)
packages.
Features
· Minimum Guaranteed Output Current: 1.5A
· Low Dropout Voltage: 375mV at I
OUT
=1.5A
· Output Accuracy: ± 1%
· Low Ground Current
· Internal Current and Thermal Limit
· Reversed-battery and Reversed-lead Insertion
Protection
· Fast Transient Response
· TTL/CMOS Compatible Enable Pin
Applications
· Set-top Box
· Hi-end DVD Player/Recorder
· LCD TV/PDP
· LDO Linear Regulator for PC Add-in Cards
· High Efficiency Linear Power Supplies
· SMPS Post Regulator
Figure 1. Package Types of AZ39151
TO-252-4 (PPAK) TO-252-5