UZ1086L-AD-TA3-T - Unisonic Technologies Co., Ltd.

UNISONIC TECHNOLOGIES CO., LTD

UZ1086

LINEAR INTEGRATED CIRCUIT

1.5A ADJUSTABLE/FIXED LOW

DROPOUT LINEAR

REGULATOR

 DESCRIPTION

The UTC UZ1086 and UZ1086-1.8V, 2.5V, 2.85V, 3.3V and 5V

are low dropout three-terminal regulators with 1.5A output current

capability. These devices have been optimized for low voltage where

transient response and minimum input voltage are critical. The 2.85V

version is designed specifically to be used in Active Terminators for

SCSI bus.

Current limit is trimmed to ensure specified output current and

controlled short-circuit current. On-chip thermal limiting provides

protection against any combination of overload and ambient

temperatures that would create excessive junction temperatures.

Unlike PNP type regulators where up to 10% of the output

current is wasted as quiescent current, the quiescent current of the

UZ1086 flows into the load, increasing efficiency.

 FEATURES

*Low dropout voltage

*Load regulation: 0.05% typical

*Trimmed current limit

*On-chip thermal limiting

*Three-terminal adjustable or fixed 1.8V, 2.5V, 2.85V, 3.3V, 5V

Lead-free: UZ1086L-xx

Halogen-free: UZ1086G-xx

 ORDERING INFORMATION

Ordering Number Pin Assignment

Normal Lead Free Halogen-Free

Package 1 2 3 Packing

UZ1086-xx-AA3-R UZ1086L-xx-AA3-R UZ1086G-xx-AA3-R SOT-223 A/G O I Tape Reel

UZ1086-xx-TA3-T UZ1086L-xx-TA3-T UZ1086G-xx-TA3-T TO-220 A/G O I Tube

UZ1086-xx-TN3-R UZ1086L-xx-TN3-R UZ1086G-xx-TN3-R TO-252 A/G O I Tape Reel

UZ1086-xx-TQ2-R UZ1086L-xx-TQ2-R UZ1086G-xx-TQ2-R TO-263 A/G O I Tape Reel

UZ1086-xx-TQ2-T UZ1086L-xx-TQ2-T UZ1086G-xx-TQ2-T TO-263 A/G O I Tube

UZ1086-xx-TQ3-R UZ1086L-xx-TQ3-R UZ1086G-xx-TQ3-R TO-263-3 A/G O I Tape Reel

UZ1086-xx-TQ3-T UZ1086L-xx-TQ3-T UZ1086G-xx-TQ3-T TO-263-3 A/G O I Tube

Note: 1. xx: Output Voltage, refer to Marking Information.

2. A: ADJ (for adjustable regulator), G: GND (for fixed regulator)

www.unisonic.com.tw 1 of 6

UZ1086 LINEAR INTEGRATED CIRCUIT

 MARKING INFORMATION

PACKAGE VOLTAGE CODE MARKING

TO-220

TO-252

TO-263

TO-263-3

123

UTC

UZ1086

XX

Voltage Code Date Code

L: Lead Free

G: Halogen Free

LOT Code

SOT-223

18 :1.8V

25 :2.5V

2J :2.85V

33 :3.3V

50 :5.0V

AD :ADJ UZ1086

XX

123

Date Code

Voltage Code

L: Lead Free

G: Halogen Free

UNISONIC TECHNOLOGIES CO., LTD 2 of 6

www.unisonic.com.tw QW-R102-008,J

UZ1086 LINEAR INTEGRATED CIRCUIT

UNISONIC TECHNOLOGIES CO., LTD 3 of 6

www.unisonic.com.tw QW-R102-008,J

 ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATINGS UNIT

Input Voltage VIN 7.5 V

Junction Temperature TJ +125 °C

Operating Temperature TOPR 0 ~ +125 °C

Storage Temperature TSTG -40 ~ +150 °C

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

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

 THERMAL DATA

PARAMETER SYMBOL RATINGS UNIT

TO-252 12 °C/W

TO-220 4 °C/W

TO-263 4 °C/W

Junction to Ambient

SOT-223

θJC

15 °C/W

 ELECTRICAL CHARACTERISTICS (VIN≤7V, TJ=25°C, unless otherwise specified.)

PARAMETER SYMBOL TEST CONDITIONS MIN. TYP. MAX. UNIT

Reference Voltage VREF *

1.5V≤ (VIN-VOUT ) ≤5.75V

10mA≤IOUT≤1A 1.225 1.25 1.275 V

UZ1086-1.8 * 3.3V≤VIN≤7V 1.764 1.80 1.836 V

UZ1086-2.5 * 4V≤VIN≤7V 2.450 2.50 2.550 V

UZ1086-2.85 * 4.35V≤VIN≤7V 2.793 2.85 2.907 V

UZ1086-3.3 * 4.8V≤VIN≤7V 3.234 3.30 3.366 V

Output Voltage

UZ1086-5.0

VOUT 10mA≤IOUT≤1A

6.5V≤VIN≤7V 4.900 5.00 5.100 V

Line Regulation (Note1,2) ΔVOUT *(V

OUT+1.5V) ≤VIN≤7V,IOUT=10mA 0.005 0.2 %

Load Regulation (Note1,2) ΔVOUT *V

IN-VOUT=2V, 10mA≤IOUT≤1A 0.05 0.5 %

Dropout Voltage VD *I

OUT=1.5A 1.30 1.50 V

Current Limit ILIMIT *V

IN-VOUT=2V 1.6 2 A

Adjust Pin Current Iadj * 35 120 μA

Adjust Pin Current Change ΔIadj * 1.5V≤ (VIN - VOUT ) ≤5.75V,

10mA≤IOUT≤1A 0.2 5 μA

Minimum Load Current Io(min) * 1.5V≤ (VIN -VOUT) ≤5.75V 10 mA

Quiescent Current IQ *V

IN =VOUT+1.25V 4 13 mA

Ripple Rejection RR f=120Hz, COUT=22μF, Tantalum

VIN -VOUT=3V, IOUT=1.5A 60 72 dB

Thermal Regulation Ta=25°C, 30ms pulse 0.004 0.02 %/W

Temperature Stability ΔVOUT * 0.5 %

Long-Term Stability ΔVOUT Ta=125°C, 1000hrs 0.03 1.0 %

RMS Output Noise VOUT T

a=25°C, 10Hz≤f≤10kHz 0.003 %

Thermal shutdown Junction Temperature 155 °C

Thermal Shutdown Hysteresis 10 °C

Note:

* stand for specifications which apply over the designed operating temperature range.

1. See thermal regulation specifications for changes in output voltage due to heating effects. Load and line

regulation are measured at a constant junction temperature by low duty cycle pulse testing.

2. Line and load regulation are guaranteed up to the maximum power dissipation. Power dissipation is

determined by input/output differential and the output current. Guaranteed maximum output power will not

be available over the full input/output voltage range.

UZ1086 LINEAR INTEGRATED CIRCUIT

 TYPICAL APPLICATION CIRCUIT

R1

124

10 F22 F

R2

24.9

1.5V at 1.5A

VIN=3.3V VIN VOUT

ADJ

VOUT=VREF(1+R2/R1)+IAdj*R2

10 F22 F

2.85V at 1.5AVIN=5V VIN VOUT

GND

UZ1086-2.85

UZ1086

++

+

UNISONIC TECHNOLOGIES CO., LTD 4 of 6

www.unisonic.com.tw QW-R102-008,J

UZ1086 LINEAR INTEGRATED CIRCUIT

 TYPICAL CHARACTERISTICS

00.3

0.6 0.9 1.2

0

0.5

0.6

0.7

0.8

0.9

Figure 1.Dropout Voltage vs.Output Current

Dropout Voltage (V)

Output Current (A)

1.5

1.0

1.1

1.2

1.3

1.4

1.5

-75 -25 25 75 125-50

-0.1

0

-0.05

50

Figure 2. Load Regulation vs.Temperature

Dropout Voltage Deviation(%)

Junction Temperature(°C)

175

0

100

0.0

5

150

0.1

-

0.15

-0.2

I=1A

-75 -25 25 75 125-50

1.22

0

1.225

50

Figure 3.Reference Votage vs.Temperature

Reference Voltage(V)

Junction Temperature(°C)

175

1.23

100

1.235

150

1.25

1.21

1.2

1.205

1.215

1.245

1.24

-75 -25 25 75 125-50

3.4

0

3.45

50

Figure 4.Output Voltage vs.Temperature

Reference Voltage(V)

Junction Temperature(°C)

175

3.5

100

3.55

150

3.7

3.3

3.2

3.25

3.35

3.65

3.6

VOUT SET WITH 1% RESISTORS

VOUT =3.6V

VOUT =3.3V

UZ1086 adjustable Only

-75 -25 25 75 125-50

2

050

Figure 5.Minimum Load Current vs.Temperature

Minimum Load Current (mA)

Junction Temperature(°C)

175

3

100 150

5

1

0

4

-75 -25 25 75 125-50

40

0

50

Figure 6.Adjust Pin Current vs.Temperature

Adjust Pin Current ( A)

Junction Temperature(°C)

175

60

100

70

150

100

20

0

10

30

90

80

Note1.UZ1086 Only

UNISONIC TECHNOLOGIES CO., LTD 5 of 6

www.unisonic.com.tw QW-R102-008,J

UZ1086 LINEAR INTEGRATED CIRCUIT

 TYPICAL CHARACTERISTICS(Cont.)

Short- Circuit Current (A)

Ripple Rejection (dB)

UTC assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or

other parameters) listed in products specifications of any and all UTC products described or contained

herein. UTC products are not designed for use in life support appliances, devices or systems where

malfunction of these products can be reasonably expected to result in personal injury. Reproduction in

whole or in part is prohibited without the prior written consent of the copyright owner. The information

presented in this document does not form part of any quotation or contract, is believed to be accurate

and reliable and may be changed without notice.

UNISONIC TECHNOLOGIES CO., LTD 6 of 6

www.unisonic.com.tw QW-R102-008,J