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AX1117A Datasheet Preview

AX1117A Datasheet

1A Low Dropout Linear Regulator

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AX1117A
1A Low Dropout Linear Regulator
GENERAL DESCRIPTION
AX1117A is a low dropout positive adjustable or fixed-mode 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 logic supply. AX1117A is also well suited for other applications such as VGA cards.
AX1117A is guaranteed to have lower than 1.4V dropout at full load current making it ideal to
provide well-regulated outputs of 1.25 to 5.0 with 6.4V to 12V input supply.
FEATURES
- 1.5V maximum dropout at full load current
- Fast transient response
- Output current limiting
- Built-in thermal shutdown
- Good noise rejection
- Low-ESR Ceramic Capacitor (MLCC) Required for Stability.
- 3-Terminal Adjustable or Fixed 1.5V, 1.8V, 2.5V, 3.3V, 5.0V
- Packages: SOT223, TO252.
BLOCK DIAGRAM
Vin 3
2 Vout
Thermal
Shutdown
+
+-
CURRENT
LIMIT
1.25V
+
+
1
GND
(FIXED)
- 1 Adj
1/8
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.2.0 Dec.18, 2012




AXElite

AX1117A Datasheet Preview

AX1117A Datasheet

1A Low Dropout Linear Regulator

No Preview Available !

AX1117A
PIN ASSIGNMENT
The packages of AX1117A are SOT223 and TO252; the pin assignment is given by:
SOT223
( Top View )
Name
Description
3 VIN
2 VOUT
Adj
(GND)
A resistor divider from this pin to the VOUT
pin and ground sets the output voltage.
(Ground only for Fixed-Mode)
The output of the regulator. A minimum of
1 Adj (GND)
Tab is VOUT
VOUT
3.3uF EL capacitor (10mΩ ≤ ESR 1Ω)
must be connected from this pin to ground
to insure stability.(Note)
TO252
( Top View )
The input pin of regulator. Typically a large
storage capacitor is connected from this pin
3 VIN
to ground to insure that the input voltage
2 VOUT
VIN
does not sag below the minimum dropout
voltage during the load transient response.
1
Tab is VOUT
Adj (GND)
This pin must always be 1.5V higher than
VOUT in order for the device to regulate
properly. (Note)
Note: To prevent oscillation, a 4.7uF minimum Y5V or a 1uF minimum X7R or X5R dielectric is strongly
recommended if ceramics are used as input/output capacitors.
ORDER/MARKING INFORMATION
Order Information
AX 1117A X XX X
ADJ
Low Dropout
Regulator
Top Marking (SOT223-3L)
Package
VOUT
Packing
E : SOT223-3L Blank : ADJ
D : TO252-3L 15 : 1.5V
18 : 1.8V
25 : 2.5V
33 : 3.3V
50 : 5.0V
Blank : Tube
A : Taping
Top Marking (TO252-3L)
ADJ
AXLogo
11 17
A
YWWX
FIX
Part number
Functional code
ID code: internal
WW: 01~52
Year: A=2010
1=2011
2=2012
:
:
9=2019
AXLogo
11 17
A
YYWWX
FIX
Part number
Functional code
ID code: internal
WW: 01~52
Year: A=2010
1=2011
2=2012
:
:
9=2019
AXOutput Voltage
AX1117A-15: 1.5V
11 17
A - VV
YWWX
AX1117A-18: 1.8V
AX1117A-25: 2.5V
AX1117A-33: 3.3V
AX1117A-50: 5.0V
ID code: internal
WW: 01~52
Year: A=2010
1=2011
2=2012
:
:
9=2019
AXOutput Voltage
AX1117A-15: 1.5V
1117
A - VV
AX1117A-18: 1.8V Y YWW X
AX1117A-25: 2.5V
AX1117A-33: 3.3V
AX1117A-50: 5.0V
ID code: internal
WW: 01~52
Year: A=2010
1=2011
2=2012
:
:
9=2019
2/8
Axelite Confidential Materials, do not copy or distribute without written consent.
Rev.2.0 Dec.18, 2012


Part Number AX1117A
Description 1A Low Dropout Linear Regulator
Maker AXElite
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AX1117A Datasheet PDF






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