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General Description
AP1121 series are low dropout positive regulator
with minimum of 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
3.3V/2.5V or 3.3V/1.8V logic supply. AP1121 series
are guaranteed to have <1.3V dropout at full load
current making it ideal to provide well regulated
outputs dual channels with up to 18V input supply.
1.3V maximum dropout at full load current
Fast transient response
Output current limiting for each channel.
Built-in thermal shutdown each channel.
Good noise rejection
Dual output ch1=3.3V, ch2=2.5V
(1.8V for B version)
Pb-Free
Packages: SOP-8L
Applications
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PC peripheral
Communication
Connection Diagram
(Top View)
V
OUT1
1
V
IN
2
V
IN
3
V
OUT2
4
AP1121
8
7
6
5
GND
GND
GND
GND
Pin Descriptions
NAME
GND
3.3V(V
OUT1
)
2.5V/1.8V
(V
OUT2
)
V
IN
Ground
The output of the regulator. A
minimum of 10uF capacitor
must be connected from this
pin to ground to insure
stability.
The input pin of regulator.
Typically a large storage
capacitor is connected from
this pin to ground.
FUNCTION
Ordering Information
AP 1121 X X
Vout
A : CH1=3.3V
CH2=2.5V
B : CH1=3.3V
CH2=1.8V
X
Packing
Blank : Tube
A : Taping
Package
S : SOP-8L
This datasheet contains new product information. Anachip Corp. reserves the rights to modify the product specification without notice. No liability is assumed as a result of the use of
this product. No rights under any patent accompany the sale of the product.
Rev. 0.0 Mar. 4, 2004
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