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Rev.2.2 Sep.20, 2019

AX1117A



PIN ASSIGNMENT

The packages of AX1117A are SOT223 and TO252; the pin assignment is given by:

VIN

VOUT

Adj (GND)

Tab is VOUT

( Top View )

3

2

1

SOT223

Name

Description

Adj

(GND)

A resistor divider from this pin to the VOUT

pin and ground sets the output voltage.

(Ground only for Fixed-Mode)

VOUT

The output of the regulator. A minimum of

3.3uF EL capacitor (10mΩ ≤ ESR ≤ 1Ω)

must be connected from this pin to ground

to insure stability.(Note)

VIN

The input pin of regulator. Typically a large

storage capacitor is 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 1.5V higher than

VOUT in order for the device to regulate

properly. (Note)

3

2

1

VIN

VOUT

Adj (GND)

Tab is VOUT

( Top View )

TO252

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

Low Dropout

Regulator

Package

VOUT

E : SOT223-3L

D : TO252-3L

Blank : ADJ

15 : 1.5V

18 : 1.8V

25 : 2.5V

33 : 3.3V

50 : 5.0V

Packing

Blank : Tube

A

: Taping

Top Marking (SOT223-3L)

Top Marking (TO252-3L)

ADJ

1

Y

AX

Part number

ID code: internal

WW: 01~52

Logo

1

7

1

W WX

A

Functional code

Year: 8=2018

9=2019

B=2020

C=2021

D=2022

:

Z=2044

FIX

1

AX

ID code: internal

WW: 01~52

1

7

1

WW X

V V

Output Voltage

AX1117A-15: 1.5V

AX1117A-18: 1.8V

AX1117A-25: 2.5V

AX1117A-33: 3.3V

AX1117A-50: 5.0V

Y

-

A

Year: 8=2018

9=2019

B=2020

C=2021

D=2022

:

Z=2044

ADJ

1

Y

AX

Part number

ID code: internal

WW: 01~52

Logo

1

7

1

W WX

Y

A

Functional code

Year: 18=2018

19=2019

20=2020

21=2021

22=2022

:

45=2045

FIX

1

AX

ID code: internal

WW: 01~52

1

7

1

WW X

V V

Output Voltage

AX1117A-15: 1.5V

AX1117A-18: 1.8V

AX1117A-25: 2.5V

AX1117A-33: 3.3V

AX1117A-50: 5.0V

Y

Y

-

A

Year: 18=2018

19=2019

20=2020

21=2021

22=2022

:

45=2045