Diodes AP1122 User Manual
Ap1122, 1a low dropout positive regulator, Description
AP1122
1A LOW DROPOUT POSITIVE REGULATOR
AP1122
Document number: DS31012 Rev. 9 - 2
1 of 11
May 2010
© Diodes Incorporated
Description
AP1122 is a low dropout positive fixed-mode regulator with
1A
output current capability. The product is specifically
designed to provide well-regulated supply for low voltage IC
applications such as high-speed bus termination and low
current 1.2V logic supply. AP1122 is also well suited for other
applications such as VGA cards. AP1122 is guaranteed to
have lower than 1.3V dropout at full load current making it
ideal to provide well-regulated outputs of 1.2 output voltage
with 2.5V input voltage supply.
Applications
• PC
peripheral
• Communication
Features
• 1.3V maximum dropout at full load current
• Fixed 1.2V± 2% output voltage
• Fast transient response
• Output current limiting
• Built-in thermal shutdown
• Good noise rejection
• Packages: SOT223-3L, TO252-3L, SOT89-3L, TO263-3L
and TO220-3L
• SOT89-3L, SOT223-3L and TO252-3L: Available in
“Green” Molding Compound (No Br, Sb)
• Lead Free Finish/ RoHS Compliant (Note 1)
Pin Assignments
V
OUT
GND
Tab is V
OUT
(Top View)
3
2
1
V
IN
SOT223-3L
3
2
1
V
IN
V
OUT
GND
Tab is V
OUT
(Top View)
TO252-3L/ TO263-3L
GND
V
OUT
V
IN
1
3
2
Tab is V
OUT
(Top View)
SOT89-3L
Tab is V
OUT
3
V
IN
2
1
V
OUT
GND
( Top View)
TO220-3L
Notes: 1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at