AP1122DG-13 - DIODES INC

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 1 of 11

www.diodes.com May 2010

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 suppl y .

Applications

• PC peripheral

• Communication

Features

• 1.3V maximum dropout at full load current

• Fixed 1.2V± 2% output volta ge

• Fast transient response

• Output current limiting

• Built-in thermal shutdown

• Good noise rejection

• Packages: SOT223-3L, TO252-3L, SOT89-3L, TO263-3L

and TO220-3L

• SOT89-3L, SOT223-3L an d T O252-3L: Available in

“Green” Molding Compound (No Br, Sb)

• Lead Free Finish/ RoHS Compliant (Note 1)

Pin Assignments

VOUT

GND

Tab is VOUT

(Top View)

VIN

SOT223-3L

VIN

VOUT

GND

Tab is VOUT

(Top View)

TO252-3L/ TO263-3L

GND

VOUT

VIN

Tab is VOUT

(Top View)

SOT89-3L

Tab is VOUT

3VIN

VOUT

GND

( Top View)

TO220-3L

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.

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 2 of 11

www.diodes.com May 2010

Typical Application Circuit

100uF

2.5V

1.2V/1A

Tab is VOUT

VIN

VOUT

GND

100uF

Pin Descriptions

Pin Name I/O Pin # Description

GND I 1 Ground Pin

VOUT O 2

The output of the regulator. A minimum of 10uF capacitor (0.15Ω ≤ ESR ≤ 20Ω)

must be connected from this pin to ground to insure stability.

VIN I 3

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 b elow the

minimum dropout voltage during the load transient response.

Functional Block Diagram

Thermal

Shutdown 1

2 VOUT

GND

1.2V +

CURRENT

LIMIT

VIN

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 3 of 11

www.diodes.com May 2010

Absolute Maximum Ratings

Symbol Parameter Rating Unit

VIN DC Supply Voltage -0.3 to 12 V

TST Storage Temperature -65 to +150 oC

TMJ Maximum Junction Temperature 150 oC

Recommended Operating Conditions

Symbol Parameter Min Max Unit

IOUT Output Current - 1.0 A

TOP Operating Junction Temperature Range 0 125 oC

Electrical Characteristics (Under Operating Conditions)

Parameter Test Conditions Min Typ. Max Unit

Output Voltage 2.5V≦VIN≦12V, IO=10mA, TA=25oC 1.176 1.2 1.224 V

Line Regulation 2.5V≦VIN≦12V, IO=10mA, TA=25oC 0.2 %

Load Regulation VIN=2.5V~12V, 10mA<Io<1A, TA=25oC (Note 2, 3) 1 %

Dropout Voltage

(VIN-VOUT) IOUT = 1A ,ΔVOUT = 1%VOUT 1.3 V

Current Limit (VIN-VOUT) = 5V 1. 1 A

Minimum Load Current

(Note 4) 0oC≦TJ≦125oC 5 10 mA

Thermal Regulation TA=25oC, 30ms pulse 0.008 0.04 %/W

Ripple Rejection F=120Hz,COUT=25uF Tantalum, IOUT=1A, VIN=VOUT+3V 60 70 dB

Temperature Stability IO=10mA 0.5 %

θJA Thermal Resistance

Junction-to-Ambient

SOT89-3L: Control Circuitr y/Power Transistor (Note 5)

SOT223-3L: Control Circuitr y/Power Transistor (Note 6)

TO252-3L: Control Circuitry/Power Transistor (Note 5)

TO220-3L: Control Circuitry/Power Transistor (Note 5)

TO263-3L: Control Circuitry/Power Transistor (Note 5)

182

107

oC/W

θJC Thermal Resistance

Junction-to-Case

SOT89-3L: Control Circuitr y/Power Transistor (Note 5)

SOT223-3L: Control Circuitr y/Power Transistor (Note 6)

TO252-3L: Control Circuitry/Power Transistor (Note 5)

TO220-3L: Control Circuitry/Power Transistor (Note 5)

TO263-3L: Control Circuitry/Power Transistor (Note 5)

3.5

oC/W

Notes: 2. See thermal regulation specifications for changes in output voltage due to heating effects. Line and load regulation are

measured at a constant junction temperature by low duty cycle pulse testing. Load regulation is measured at the output lead

= 1/18” from the package.

3. Line and load regulation are guaranteed up to the maximum power dissipation of 15W. Power dissipation is determined by the

difference between input and output differential and the output current. Guaranteed maximum power dissipation will not be

available over the full input/output range.

4. Quiescent current is defined as the minimum output current required in maintaining regulation. At 12V input/output differential

the device is guaranteed to regulate if the output current is greater than 10mA.

5. Test conditions for SOT89-3L, TO252-3L, TO220-3L, and TO263-3L: Devices mounted on FR-4 substrate, single sided PC

board, 2oz copper, with minimum recommended pad layout, no air flow.

6. Test condition for SOT223-3L: Device mounted on FR-4 substrate, single sided PC board, 2oz copper, with 5mmX5mm thermal

pad layout, no air flow.

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 4 of 11

www.diodes.com May 2010

Typical Performance Characteristics

Temperature (

Percent Change in Output Voltage vs Temperature

Output Voltage Change (%)

-50 -25 0 25 50 75 100 125 150

- 2

-1.5

- 1

-0.5

0. 5

1.5

Input Voltage (V)

Line Regulation

Output Voltage Deviation (%)

0.2

0.4

0.6

0.8

681012

TIME (u s)

Line Transient Response

Outpu t Voltage Deviation (mV) Input Voltage (V)

-40

-20

5.5

6.5

7.5 Cin=1uF

Cout=10uF Tantalum

0 20 40 60 80 100 120 140 160 180 200

TIME (us)

Load Transient Response

Load Current (A ) Output Voltag e D eviati on (m V)

010

20 30 40 50 60 70 80 90 100

-1

-20

-10

30 C in = 1uF

C out = 10 uF Tantalum

Preload = 100mA

Temperature (

Load Regulation vs Temperature

Output Voltage Deviation (%)

-25 0 25 50 75 100 125

- 1

-0.80

-0.40

-0.20

0.20

I load=800mA

Dropout Voltage vs Output Current

Output Current (mA)

Dropout Voltage (V)

0. 2

0. 4

0. 6

0. 8

1. 0

1. 2

1. 4

1. 6

1. 8

2. 0

0250 500 750 1000

Tj = 125

Tj = 25

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 5 of 11

www.diodes.com May 2010

Ordering Information

E : SOT223-3L

D : TO252-3L

Y : SOT89-3L

Package L : Lead Free (Note 7)

AP 1122 X X - X

Lead Free Packing

U : Tube

13 : Tape & Reel

G : Green

K : TO263-3L

T : TO220-3L

Device Package

Code Packaging

(Note 8)

Tube 13” Tape and Reel

Quantity Part Number

Suffix Quantity Part Number

Suffix

AP1122EL-13 E SOT223-3L NA NA 2500/Tape & Reel -13

AP1122EG-13 E SOT223-3L NA NA 2500/Tape & Reel -13

AP1122DL-13 D TO252-3L NA NA 2500/Tape & Reel -13

AP1122DG-13 D TO252-3L NA NA 2500/Tape & Reel -13

AP1122YL-13 Y SOT89-3L NA NA 2500/Tape & Reel -13

AP1122YG-13 Y SOT89-3L NA NA 2500/Tape & Reel -13

AP1122KL-13 K TO263-3L NA NA 800/Tape & Reel -13

AP1122TL-U T TO220-3L 50 -U NA NA

Notes: 7. TO263-3L and TO220-3L are available in “Lead Free” products only.

8. Pad layout as shown on Diodes Inc. suggested pad la yout document AP02001, which can be found on our website at

http://www.diodes.com/datasheets/ap02001.pdf

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 6 of 11

www.diodes.com May 2010

Marking Information

(1) SOT223-3L

Y W X

1 1 2 2

Logo

( Top View )

X : Internal code

a~z : Lead Free

A~Z : Green

Y : Year : 0~9

W : Week : A~Z : 1~26 week;

a~z : 27~5 2 week ;

z repersents 52 an d 53 w eek

Part Number

(2) TO252-3L

1 1 2 2

X : Internal Code

WW : Week : 01~52, 52 represents

YY : Year : 01~09

( Top View )

YY WW X X

Logo

L : Lead Free

G : Green

52 and 53 week

Part Number

(3) SOT89-3L

1 32

X X

Y W

XX : Identification code

( Top View )

Y : Year : 0~9

W : Week : A~Z : 1~26 week;

X : Internal code

a~z : 27~52 week;

z represents 52 and 53 week

a~z : Lead Free

A~Z : Green

Part Number Package Identification Code

AP1122 SOT89-3L JB

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 7 of 11

www.diodes.com May 2010

Marking Information (Continued)

(4) TO263-3L

1 1 2 2

X : Internal code

YY : Year : 01~09

( Top View )

YY WW X XWW : Week : 01~52, 52 represents

Logo

52 and 53 week

L : Lead Free

Part Number

(5) TO220-3L

( Top View )

1 1 2 2

Logo

YY WWX X

Part Number

X : Internal code

WW : Week : 01~52, 52 represents

YY : Year : 01~09

52 and 53 week

L : Lead Free

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 8 of 11

www.diodes.com May 2010

Package Outline Dimensions (All Dimensions in mm)

(1) SOT223-3L

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 9 of 11

www.diodes.com May 2010

Package Outline Dimensions (Continued)

(2) TO252-3L

5.20/5.50 Typ 5.35

6.354 /6.80 Typ 6.58

2.28

BSC.

0.61 Ty p

0.88/1.27

4.57 BSC. 9.00/ 10.40 Typ 9.70

SEATING

PLANE

SEE NOTE 2

0.51

5.6

11.0

5.6

2.0

2.25

Land Pattern Recommendation (Unit: mm)

7.2

1.2

2.18/2.40

Typ 2.29

0.45/0.58

Typ 0.52

0.64/1.02

Typ 0.83

0.45/0.58

Typ 0.52

0.89/

1.14

5.40/6.20

Typ 5.57

(3) SOT89-3L

0.80/

1.20 2.35/2.60 Typ 2. 48

1.40/1.75

Typ 1.60

2.90/3.10

Typ 3.00

1.40/1.60

Typ 1.50

4.40/4.60 Typ 4.50

0.41/0.53

Typ 0.47

0.36/0.48

Typ 0.42

80(2x)

1.7

0.4

0.9

2.7

1.3

1.9

50(2x)

Land Pattern Recommendation (Unit: mm)

1.5

0.36/0.48

Typ 0.42

1.45/1.55

Typ 1.50

0.35/0.43

Typ 0.39

3.94/4.25

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 10 of 11

www.diodes.com May 2010

Package Outline Dimensions (Continued)

(4) TO263-3L

9.65/10.29 Typ 9.97

2.54

BSC.

2.92

Typ 1.30

0.51/0.99 Typ 0.75

1.14/1.40 Typ1.27

8.65/9.65 Typ 9.15

1.27/

1.78

Typ

1.52 14.61/15.88 Typ 15.24

4.06/4.83

Typ 4.45

1.14/1.40

Typ 1.27

2.28/2.80 Typ 2.54

1.3

15.7

10.9

9.1

Land Pa ttern Recommen dation (Unit: m m )

2.54

0.38 Typ

(5) TO220-3L 3.55/4.85

Typ 4.20 0.51/1.40

Typ 0.95

0.31/1.14

Typ 0.72

SEATING PLANE

14.20/16.50

Typ 15.35

9.70/10.70

Typ 10.20

12.72/14.72

Typ 13.72

0.51/1.14

Typ 0.83

4.83/5.33

Typ 5.08

1.14/1.78

Typ 1.46

Ø3.53/4.09

Typ 3.81

5.84/6.86

Typ 6.35

2.54/3.43

Typ 2.98

3.66/6.35

Typ 5.00

2.03/2.92

Typ2.48

2.99/2.79

Typ 2.54

AP1122

1A LOW DROPOUT POSITIVE REGULATOR

AP1122

Document number: DS31012 Rev. 9 - 2 11 of 11

www.diodes.com May 2010

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