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Diodes Semiconductor Electronic Components Datasheet

AP1122 Datasheet

1A LOW DROPOUT POSITIVE REGULATOR

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AP1122 pdf
AP1122
1A LOW DROPOUT POSITIVE REGULATOR
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
SOT223-3L and TO252-3L: Available in “Green”
Molding Compound (No Br, Sb) (Note 1)
Lead Free Finish/RoHS Compliant (Note 2)
General 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
Ordering Information
AP1122XXX
Package
E : SOT223-3L
D : TO252-3L
Y : SOT89-3L
Lead Free
Packing
L : Lead Free
-U : Tube
G : Green (Note 1) -13 : Taping
Note:
Note:
1. Green is only for SOT223-3L and TO252-3L.
2. RoHS revision 13.2.2003. Glass and High Temperature Solder Exemptions Applied, see EU Directive Annex Notes 5 and 7.
Device
(Note 3)
AP1122E
AP1122D
AP1122Y
Lead-free
Package
Code
Packaging
(Note 3)
Tube/Bulk
Quantity Part Number
Suffix
E SOT223-3L
75
-U
D TO252-3L
80
-U
Y SOT89-3L
NA
NA
13” Tape and Reel
Quantity
Part Number
2500/Tape & Reel
2500/Tape & Reel
2500/Tape & Reel
Suffix
-13
-13
-13
3. Pad layout as shown on Diodes Inc. suggested pad layout document AP02001, which can be found on our website at
http://www.diodes.com/datasheets/ap02001.pdf.
AP1122 Rev. 2
1 of 9
www.diodes.com
FEBRUARY 2007
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AP1122 Datasheet

1A LOW DROPOUT POSITIVE REGULATOR

No Preview Available !

AP1122 pdf
Pin Assignment
(1) SOT223-3L
( Top View )
3
Vin
2 Vout
1 GND
Tab is Vout
(3) SOT89-3L
3 Vin
2 Vout
1 GND
Tab is Vout
Typical Application Circuit
AP1122
1A LOW DROPOUT POSITIVE REGULATOR
(2) TO252-3L
( Top View )
3
Vin
2 Vout
1
Tab is Vout
GND
2.5V
Vin
Vout
GND
Tab is Vout
C1
100uF
1.2V/1A
C2
100uF
AP1122 Rev. 2
2 of 9
www.diodes.com
FEBRUARY 2007
© Diodes Incorporated



Diodes Semiconductor Electronic Components Datasheet

AP1122 Datasheet

1A LOW DROPOUT POSITIVE REGULATOR

No Preview Available !

AP1122 pdf
Block Diagram
Vin 3
Thermal
Shutdown
AP1122
1A LOW DROPOUT POSITIVE REGULATOR
2 Vout
+
+
+
1.2V
CURRENT
LIMIT
+
1 GND
Pin Descriptions
NAME I/O PIN #
FUNCTION
GND I
1 Ground Pin
Vout O
2
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 I
The input pin of regulator. Typically a large storage capacitor (0.15Ω ≤ ESR 20) is
3
connected from this pin to ground to insure that the input voltage does not sag below
the minimum dropout voltage during the load transient response. This pin must
always be 1.3V higher than Vout in order for the device to regulate properly.
Absolute Maximum Ratings
Symbol
Vin
TST
TOP
TM
Parameter
DC Supply Voltage
Storage Temperature
Operating Junction Temperature Range
Maximum Junction Temperature
Rating
-0.3 to 12
-65 to +150
0 to +125
150
Unit
V
oC
oC
oC
AP1122 Rev. 2
3 of 9
www.diodes.com
FEBRUARY 2007
© Diodes Incorporated




Part Number AP1122
Description 1A LOW DROPOUT POSITIVE REGULATOR
Maker Diodes Incorporated
Total Page 9 Pages
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