Diodes AZ2940 - Manual

1A ULTRA LOW DROPOUT LINEAR REGULATOR AZ2940
Data Sheet
1
Sept. 2011 Rev. 2. 4 BCD Semiconductor Manufacturing Limited
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 1.2V, 1.8V, 2.5V, 3.3V and 5.0V ver-
sions.
The AZ2940 series is available in the industry standard
TO-220-3, TO-263-3, TO-252-2 (1), TO-252-2 (3) and
SOT-223 power packages. (Detailed information
please refer to page 4)
Features
· Minimum Guaranteed Output Current: 1A
· Dropout Voltage at I
OUT
=1A: 280mV Typ.
(Except 1.2V and 1.8V Versions)
· Output Accuracy: ± 1%
· Low Ground Current
· Internal Current Limit and Thermal Protection
· Reversed-battery and Reversed-lead Insertion
Protection
· Fast Transient Response
Applications
· LCD TV
· Set Top Box
· LCD Monitor
· SMPS Post Regulator
· Laptop, Palmtop and Notebook
· Portable Instrumentation
· USB Power Supply
Figure 1. Package Types of AZ2940
TO-220-3 TO-263-3
TO-252-2 (1)
SOT-223
TO-252-2 (3)