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UNISONIC TECHNOLOGIES CO., LTD

UZ1084

5A ADJUSTABLE/FIXED LOW

DROPOUT LINEAR

REGULATOR

DESCRIPTION

The UTC UZ1084-ADJ/Fixed voltage are low dropout

three-terminal regulators with 5A output current capability. These

devices have been optimized for low voltage applications

including VTT bus termination, where transient response and

minimum input voltage are critical.

On-chip thermal limiting provides protection against any

combination of overload and ambient temperature that would

create excessive junction temperatures.

1

TO-263

1

LINEAR INTEGRATED CIRCUIT

1

TO-252

1

TO-220

TO-263-3

1

TO-220F

FEATURES

*Fast transient response

*Low dropout Voltage at up to 5A

*Load regulation : 0.5% typical

*On-chip thermal limiting

*Pb-free plating product number: UZ1084L-xx

APPLICATIONS

*Desktop PCs, RISC and embedded processors’ supply

*GTI, SSTL logic Reference bus supply

*Low voltage V

CC

logic supply

*Battery-powered circuitry

*Post regulator for switching supply

*Cable and ADSL modems’ DSP core supply

*Set Top Boxes and Web Boxes modules’ supply

ORDERING INFORMATION

Order Number

Normal

Lead Free Plating

UZ1084-xx-TA3-A-R

UZ1084L-xx-TA3-A-R

UZ1084-xx-TA3-A-T

UZ1084L-xx-TA3-A-T

UZ1084-xx-TF3-A-T

UZ1084L-xx-TF3-A-T

UZ1084-xx-TF3-A-T

UZ1084L-xx-TF3-A-T

UZ1084-xx-TN3-A-R

UZ1084L-xx-TN3-A-R

UZ1084-xx-TN3-A-T

UZ1084L-xx-TN3-A-T

UZ1084-xx-TQ2-A-R

UZ1084L-xx-TQ2-A-R

UZ1084-xx-TQ2-A-T

UZ1084L-xx-TQ2-A-T

UZ1084-xx-TQ3-A-R

UZ1084L-xx-TQ3-A-R

UZ1084-xx-TQ3-A-T

UZ1084L-xx-TQ3-A-T

Note: xx: Output voltage, refer to Marking Information.

UZ1084L-xx-TA3-A-R

(1)Packing Type

(2)Pin Assignment

(3)Package Type

(4)Output Voltage Code

(5)Lead Plating

Package

TO-220

TO-220F

TO-252

TO-263

TO-263-3

Pin Assignment

1

2

3

Packing

Tape Reel

Tube

Tape Reel

Tube

Tape Reel

Tube

Tape Reel

Tube

Tape Reel

Tube

ADJ/

Vout Vin

GND

(1) R: Tape Reel, T: Tube

(2) refer to Pin Assignment

(3) TA3: TO-220, TF3: TO-220F, TN3: TO-252,

TQ 2: TO-263, TQ3: TO-263-3

(4) xx: refer to Marking Information

(5) L: Lead Free Plating, Blank: Pb/Sn

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1 of 6

QW-R102-010,E

UZ1084

MARKING INFORMATION

PACKAGE

TO-220

TO-220F

TO-252

TO-263

TO-263-3

VOLTAGE CODE

15

18

25

33

50

AD

:1.5V

:1.8V

:2.5V

:3.3V

:5.0V

:ADJ

LINEAR INTEGRATED CIRCUIT

MARKING

UTC

UZ1084

VOLTAGE CODE

LEAD PLATING

DATE CODE

1

2

3

THERMAL DATA

PARAMETER

TO-252

Thermal Resistance Junction-Case

TO-220

TO-263

TO-252

TO-220

TO-263

SYMBOL

RATINGS

12

4

112

54

64

UNIT

°C/W

θ

JC

Thermal Resistance Junction-Ambient

θ

JA

°C/W

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

2 of 6

QW-R102-010,E

UZ1084

ABSOLUTE MAXIMUM RATINGS

(Ta=25℃)

PARAMETER

LINEAR INTEGRATED CIRCUIT

SYMBOL

RATINGS

UNIT

DC Input Voltage

V

IN

15

V

Junction Temperature

T

J

+125

°C

Temperature Range

T

OPR

-20 ~ +85

℃

Storage temperature

T

STG

-40 ~ +150

°C

Note: 1.Absolute maximum ratings are those values beyond which the device which the device could be permanently

damaged. Absolute maximum ratings are stress ratings only and functional device operation is not implied.

2.The device is guaranteed to meet performance specification within 0℃~+70℃ operating temperature range

and assured by design from -20℃~+85℃, characteristic and correlation with static process control.

ELECTRICAL CHARACTERISTICS

For UZ1084-Adjustable

(Operating Conditions : 4.75

≦

V

IN

≦

5.25, T

J

=25

℃

unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

Reference Voltage

V

REF

I

OUT

=10mA

Line Regulation

∆V

OUT

l

OUT

=10mA

Load Regulation

∆V

OUT

10mA≦l

OUT

≦5A

△V

REF

%=2%, lo=5A

Dropout Voltage

V

D

Current Limit

I

LIMIT

(V

IN

-V

OUT

)=2V

Adjust Pin Current

Iadj

Adjust Pin Current Change

∆Iadj

1.5V≦(V

IN

-V

OUT

)≦5.75V, 10mA≦l

OUT

≦5A

Minimum Load Current

Io(min) 1.5V≦(V

IN

-V

OUT

)≦5.75V

Thermal shutdown

MIN

1.23

TYP

1.25

0.5

6.5

35

5

150

MAX

1.27

2

2.5

1.5

100

5

10

UNIT

V

%

V

A

µA

mA

°C

5.5

For UZ1084-xx(Fixed Voltage)

(Operating Conditions : 1.5V

≦

(V

IN

-V

OUT

)

≦

5.75V,T

J

=25

℃

unless otherwise specified)

PARAMETER

SYMBOL

TEST CONDITIONS

1%

UZ1084-15 l

OUT

=10mA

2%

1%

UZ1084-18 l

OUT

=10mA

2%

1%

Output Voltage

V

OUT

UZ1084-25 l

OUT

=10mA

2%

1%

UZ1084-33 l

OUT

=10mA

2%

1%

UZ1084-50 l

OUT

=10mA

2%

Line Regulation

∆V

OUT

I

OUT

=10mA

Load Regulation

∆V

OUT

10mA≦l

OUT

≦5A

△V

REF

%=2%, l

OUT

=5A

Dropout Voltage

V

D

Current Limit

I

LIMIT

(V

IN

-V

OUT

)=2V

Minimum Load Current

∆Iadj

1.5V≦(V

IN

-V

OUT

)≦5.75V

Quiescent Current

I

Q

V

IN

=12V

Thermal shutdown

MIN.

1.485

1.470

1.782

1.764

2.475

2.450

3.267

3.234

4.950

4.900

TYP

1.5

1.8

2.5

3.3

5.0

0.5

6.5

5

10

150

MAX UNIT

1.515

1.530

1.818

1.836

2.525

V

2.550

3.333

3.366

5.050

5.100

2

%

2.5

%

1.5

V

A

10

mA

13

mA

°C

5.5

UNISONIC TECHNOLOGIES CO., LTD

www.unisonic.com.tw

3 of 6

QW-R102-010,E

UZ1084

TYPICAL APPLICATION CIRCUIT

LINEAR INTEGRATED CIRCUIT

Adjustable Voltage Regulator

UZ1084-ADJ

V

IN

=5V

+

10μF

V

IN

ADJ

124

Ω

+

22μF

V

OUT

V

OUT

=2.5V

at 5A

124

Ω

Fixed Voltage Regulator

UZ1084-1.5

V

IN

=3.3V

+

10μF

V

IN

V

OUT

GND

V

OUT

=1.5 V

at 5A

22μF

+

UNISONIC TECHNOLOGIES CO., LTD

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4 of 6

QW-R102-010,E

UZ1084

TYPICAL CHARACTERISTICS

Load Regulation

2

1.95

V

IN

=3.3V,V

OUT

=1.8V

LINEAR INTEGRATED CIRCUIT

Load Regulation

2.6

2.58

V

IN

=4,V

OUT

=2.5V

Output Voltage, V

OUT

(V)

1.85

1.8

1.75

1.7

1.65

1.6

1.55

1.5

0

1

2

4

3

Output Current, I

OUT

(A)

5

Output Voltage, V

OUT

(V)

1.9

2.56

2.54

2.52

2.5

2.48

2.46

2.44

2.42

2.4

0

3

2

4

1

Output Current, I

OUT

(A)

5

Load Regulation

3.5

3.45

V

IN

=4.8V,V

OUT

=3.3V

5.2

5.15

Load Regulation

V

IN

=6.5V,V

OUT

=5.0V

Output Voltage, V

OUT

(V)

3.35

3.3

3.25

3.2

3.15

3.1

3.05

3

0

3

2

4

1

Output Current, I

OUT

(A)

5

Output Voltage, V

OUT

(V)

3.4

5.1

5.05

5

4.95

4.9

4.85

4.8

4.75

4.7

0

1

2

4

3

Output Current, I

OUT

(A)

5

Output Voltage v.s. Temperature

2.6

2.58

V

IN

=4.5V,V

OUT

=2.5V

Quiescent Current v.s. Temperature

8

7

2.54

2.52

2.5

2.48

2.46

2.44

2.42

2.4

-40 -20

Quiescent Current, I

Q

(mA)

Output Voltage, V

OUT

(V)

2.56

Io=10mA

6

5

4

3

2

-40 -20

Io=5A

0 20 40 60 80 100 120

Temperature (℃)

0

20 40 60 80 100 120

Temperature (℃)

UNISONIC TECHNOLOGIES CO., LTD

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5 of 6

QW-R102-010,E

UZ1084-XX-TA3-A-R

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