Data Sheet
1A ULTRA LOW DROPOUT LINEAR REGULATOR
General Description
The AZ2940 is a low dropout three-terminal regulator
with a typical dropout of 280mV at 1A output current.
The AZ2940 provides current limit and thermal shut-
down. On-chip thermal shutdown provides protection
against any combination of high current and ambient
temperature that would create excessive junction tem-
peratures.
The AZ2940 has 2.5V, 3.3V and 5.0V versions.
The AZ2940 is available in the industry standard TO-
220-3, TO-263-3 and TO-252-2 power packages.
AZ2940
Features
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Minimum Guaranteed Output Current: 1A
Dropout Voltage at I
OUT
=1A: 280mV
Output Accuracy:
±
1%
Low Ground Current
Internal Current Limit and Thermal Protection
Reversed-battery and Reversed-lead Insertion
Protection
Fast Transient Response
Applications
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LCD TV
Set Top Box
LCD Monitor
SMPS Post Regulator
Laptop, Palmtop and Notebook
Portable Instrumentation
USB Power Supply
TO-220-3
TO-263-3
TO-252-2
Figure 1. Package Types of AZ2940
Sep. 2005 Rev. 1. 4
BCD Semiconductor Manufacturing Limited
1
BCDSEMI [ BCD SEMICONDUCTOR MANUFACTURING LIMITED ]
