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Diodes Semiconductor Electronic Components Datasheet

AP1121 Datasheet

DUAL 1A LOW DROPOUT POSITIVE REGULATOR

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AP1121 pdf
AP1121
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
Features
1.3V maximum dropout at full load current
Fast transient response
Output current limiting for each channel
Built-in thermal shutdown for each channel
Good noise rejection
Dual output ch1 = 3.3V, ch2 = 2.5V
(ch2 = 1.8V for version B)
SOP-8L: Available in “Green” Molding Compound
(No Br, Sb)
Lead Free Finish/ RoHS Compliant (Note 1)
General Description
AP1121 is a low dropout positive regulator which provides 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 is 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.
Applications
PC peripheral
Communication
Ordering Information
AP 1121 X S X - 13
Vout
A : CH1=3.3V
CH2=2.5V
B : CH1=3.3V
CH2=1.8V
Package
S : SOP-8L
Lead Free
Packing
L : Lead Free 13 : Tape & Reel
G : Green
Device
AP1121XSL-13
Lead-free
AP1121XSG-13
Package
Code
S
S
Packaging
(Note 2)
SOP-8L
SOP-8L
13” Tape and Reel
Quantity
Part Number Suffix
2500/Tape & Reel
-13
2500/Tape & Reel
-13
Notes:
1. EU Directive 2002/95/EC (RoHS). All applicable RoHS exemptions applied. Please visit our website at
http://www.diodes.com/products/lead_free.html.
2. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be on found our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP1121 Rev. 5
1 of 7
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AP1121 Datasheet

DUAL 1A LOW DROPOUT POSITIVE REGULATOR

No Preview Available !

AP1121 pdf
Pin Assignments
AP1121
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
( Top View )
VOUT1 1
VIN1 2
VIN2 3
VOUT2 4
AP1121
SOP-8L
8 GND
7 GND
6 GND
5 GND
Pin Descriptions
Pin Name
Descriptions
GND
Ground
3.3V(VOUT1)
2.5V/1.8V
(VOUT2)
The output of the regulator. A minimum of 10uF capacitor (0.15Ω ≤ ESR 20) must be
connected from this pin to ground to insure stability.
VIN
The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR 20) is
connected from this pin to ground.
AP1121 Rev. 5
2 of 7
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AP1121 Datasheet

DUAL 1A LOW DROPOUT POSITIVE REGULATOR

No Preview Available !

AP1121 pdf
AP1121
DUAL 1A LOW DROPOUT POSITIVE REGULATOR
Block Diagram
2
VIN1
Thermal
Shutdown
3
VIN2
Thermal
Shutdown
1
VOUT1
+
CURRENT
LIMIT
1.25V +
+
5/6
GND
4
VOUT2
+
CURRENT
LIMIT
1.25V +
+
7/8
GND
Typical Application Circuit
3.3V/1A
C1
100uF
5V
C2
100uF 2.5V/1A
C3
100uF
VOUT1 GND
VIN1 GND
VIN2 GND
V OUT2 GND
(3.3V/2.5V Dual output )
AP1121 Rev. 5
3 of 7
www.diodes.com
FEBRUARY 2009
© Diodes Incorporated




Part Number AP1121
Description DUAL 1A LOW DROPOUT POSITIVE REGULATOR
Maker Diodes Incorporated
Total Page 7 Pages
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