UZ1085L-AD-TN3-R - Unisonic Technologies Co., Ltd.

UNISONIC TECHNOLOGIES CO., LTD

UZ1085

LINEAR INTEGRATED CIRCUIT

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3A ADJUSTABLE/FIXED LOW

DROPOUT LINEAR

REGULATOR

 DESCRIPTION

The UTC UZ1085-xx series are low dropout three-terminal

regulators with 3A 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.

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

temperature that would create excessive junction temperatures.

 FEATURES

*Fast transient response

*Low dropout voltage at up to 3A

*Load regulation:0.05% typical

*Trimmed current limit

*On-chip thermal limiting

 ORDERING INFORMATION

Ordering Number Package Pin Assignment Packing

Lead Free Halogen Free 1 2 3

UZ1085L-xx-TA3-T UZ1085G-xx-TA3-T TO-220 A/G O I Tube

UZ1085L-xx-TN3-R UZ1085G-xx-TN3-R TO-252 A/G O I Tape Reel

UZ1085L-xx-TQ2-R UZ1085G-xx-TQ2-R TO-263 A/G O I Tape Reel

UZ1085L-xx-TQ2-T UZ1085G-xx-TQ2-T TO-263 A/G O I Tube

UZ1085L-xx-TQ3-R UZ1085G-xx-TQ3-R TO-263-3 A/G O I Tape Reel

UZ1085L-xx-TQ3-T UZ1085G-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), O: VOUT, I: VIN

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 MARKING INFORMATION

PACKAGE VOLTAGE CODE MARKING

TO-220

TO-252

TO-263

TO-263-3

15 :1.5V

18 :1.8V

25 :2.5V

33 :3.3V

50 :5.0V

AD:ADJ 123

UTC

UZ1085

XX

Voltage Code Date Code

L: Lead Free

G: Halogen Free

LOT Code

 BLOCK DIAGRAM

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 ABSOLUTE MAXIMUM RATINGS

PARAMETER SYMBOL RATINGS UNIT

Input Voltage VIN 18 V

(VIN - VOUT) ×IOUT

See Fig.1

Junction Temperature TJ +125 °C

Operating Temperature TOPR -40 ~ +85 °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

Junction to Ambient TO-252 θJA 118 °C/W

TO-220/ TO-263 62 °C/W

Junction to Case TO-252 θJC 12 °C/W

TO-220/ TO-263 4 °C/W

 ELECTRICAL CHARACTERISTICS (TA=25°C, COUT=22μF, unless otherwise specified.)

For UZ1085- ADJ (Adjustable)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Reference Voltage VREF 1.5V≤(VIN - VOUT) ≤8.25V,10mA≤IOUT≤3A 1.225 1.25 1.275 V

Line Regulation △VOUT (VOUT +1.5V) ≤VIN≤12V, IOUT=10mA 0.005 0.2 %

Load Regulation △VOUT (VIN - VOUT)=3V, 10mA≤IOUT≤3A 0.05 0.5 %

Dropout Voltage VD △VREF%=1%, lOUT=3A 1.30 1.40 V

Current Limit ILIMIT (VIN-VOUT)=2V 3.1 4 A

Adjust Pin Current IADJ 35 120 μA

Adjust Pin Current Change △IADJ 1.5V≤ (VIN - VOUT) ≤12V, 10mA≤IOUT≤3A 0.2 5 μA

Minimum Load Current IO

(

MIN

)

1.5V≤ (VIN-VOUT) ≤12V 10 mA

Quiescent Current IQ V

IN=12V 4 13 mA

Ripple Rejection RR f=120Hz,Tantalum,(VIN–VOUT)=3V IOUT=3A 60 72 dB

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

Temperature Stability ΔVOUT 0.5 %

Long-Term Stability ΔVOUT T

A=125°C, 1000hr 0.03 1.0 %

Output Noise(% of VOUT) eN TA=25°C,10Hz≤f≤10kHz 0.003 %

Thermal Shutdown 150 °C

For UZ1085-xx (Fixed Voltage)

PARAMETER SYMBOL TEST CONDITIONS MIN TYP MAX UNIT

Output Voltage

UZ1085-15

VOUT

3.0V≤VIN≤8.5V, 10mA≤IOUT≤3A 1.470 1.5 1.530 V

UZ1085-18 3.3V≤VIN≤8.8V, 10mA≤IOUT≤3A 1.764 1.8 1.830 V

UZ1085-25 4.0V≤VIN≤9.5V, 10mA≤IOUT≤3A 2.450 2.5 2.550 V

UZ1085-33 4.8V≤VIN≤10.3V, 10mA≤IOUT≤3A 3.234 3.3 3.366 V

UZ1085-50 6.5V≤VIN≤12V, 10mA≤IOUT≤3A 4.900 5.0 5.100 V

Line Regulation △VOUT (VOUT +1.5V) ≤VIN≤12V,IOUT=10mA 0.005 0.2 %

Load Regulation △VOUT (VIN – VOUT)=3V, 10mA≦IOUT≤3A 0.05 0.5 %

Dropout Voltage VD △VREF%=1%, lOUT=3A 1.30 1.40 V

Current Limit ILIMIT (VIN-VOUT)=2V 3.1 4 A

Minimum Load Current IO

(

MIN

)

1.5V≤ (VIN-VOUT) ≤12V 10 mA

Quiescent Current IQ V

IN=12V 4 13 mA

Ripple Rejection RR f=120Hz, Tantalum, (VIN -VOUT)=3V,IOUT=3A 60 72 dB

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

Temperature Stability △VOUT TA=125°C, 1000hr 0.5 %

Long-Term Stability △VOUT 0.03 1.0 %

Output Noise(% of VOUT) eN TA=25°C,10Hz≤f≤10kHz 0.003 %

Thermal shutdown 150 °C

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 TYPICAL APPLICATION CIRCUIT

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 TYPICAL CHARACTERISTICS

Dropout Voltage (V)

Output Voltage Deviation (%)

Reference Voltage (V)

Minmum Load Current (mA)

Adjust Pin Current (μA)

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 TYPICAL CHARACTERISTICS(Cont.)

Short-Circuit Current (A)

Ripple Rejections (dB)

10

0

15

0

50

0

10

15

20

5

0

706050 80 90 100 110

Maximum Power Dissipation

Case Temperature (°C)

120 130 140 150

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.