LT1085SMD-05R4 - Semelab Plc. - Datasheet.Directory

Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.

E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk

LT1085

LT1085G

LT1085IG

LT1085SMD

ABSOLUTE MAXIMUM RATINGS (Tcase = 25°C unless otherwise stated)

DEVICE(1) PACKAGE

LT1085K–XX TO–3

LT1085G–XX TO–257

LT1085IG–XX Isolated TO–257

LT1085SMD–XX SMD1

DESCRIPTION

The LT1085 voltage regulators are monolithic inte-

grated circuits designed for use in applications

requiring a well regulated positive output voltage

with low input-output differential voltage.

Features include full power usage of up to 3A load current, internal current limiting and thermal shutdown. Safe area

protection on the die is also included, providing protection of the series pass Darlington transistor under most conditions.

The her metically sealed packages are utilised for high reliability and low ther mal resistance, whilst the SMD1 package

is also designed for surface mount applications.

Note

1) –XX = Voltage Option: 3.3, 5 or 12

–XX = Left blank for Adjustable Option.

3 AMP POSITIVE

VOLTAGE REGULATOR

VIN Input – Output Voltage Differential

PDPower Dissipation

RθJC Ther mal Resistance Junction To Case TO–3 Control

TO–3 Power

RθJC Ther mal Resistance Junction To Case SMD1 Control

SMD1 Power

RθJC Ther mal Resistance Junction To Case TO–257 Control

TO–257 Power

TJOperating Junction Temperature Range Control

Power

TSTG Storage Temperature Range

TLEAD Lead Temperature (for 10 sec.)

35V

Inter nally limited *

0.93°C / W

3.0°C / W

0.79°C / W

4.0°C / W

0.79°C / W

4.0°C / W

–55 to 150°C

–55 to 200°C

–65 to 150°C

300°C

FEATURES

• Low Dropout Performance

• Fixed or Adjustable Voltages

• Fixed Output Voltages of 3.3V, 5V & 12V

• Adjustable Output Voltage Range From 1.2V

• Line Regulation 0.015% / V Typical.

• Load Regulation 0.01% Typical.

• Available in Hermetically Sealed TO–3, SMD1 and

TO–257 (isolated & non-isolated) Packages.

• Military Temperature Range (–55 to +150°C)

INPUT

SAFE AREA

PROTECTION

THERMAL

OVERLOAD

CURRENT

LIMITING

AMPLIFIER

VOLTAGE

REGULATION

AMPLIFIER

OUTPUT

ADJUST

LIMIT

SENSE

REF

* These ratings are only applicable for power dissipations of 28 Watts over a limited range of VIN – VOUT.

Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is

believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in

its use. Semelab encourages customers to verify that datasheets are current before placing orders.

Document Number 3452

Issue 4

Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.

E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk

LT1085

LT1085G

LT1085IG

LT1085SMD

ELECTRICAL CHARACTERISTICS (TA= 25°C Unless otherwise stated) ALL VARIANTS EXCEPT IG

The ♦ denotes specification is applicable over full operating temperature range.

Parameter Output

Voltage Test Conditions Min. Typ. Max. Unit

VOOutput Voltage3,4,6

3.3V VIN = 5V, IOUT = 0, TJ= 25°C (K Pack) 3.270 3.300 3.333 V

4.8V ≤ VIN ≤15V, 0 ≤ IOUT ≤IMAXLOAD ♦3.235 3.300 3.365

5.0V VIN = 8V, IOUT = 0, TJ= 25°C (K Pack) 4.950 5.000 5.050 V

6.5V ≤ VIN ≤20V, 0 ≤ IOUT ≤IMAXLOAD ♦4.900 5.000 5.100

12V VIN = 15V, IOUT = 0, TJ= 25°C (K Pack) 11.88 12.00 12.12 V

13.5V ≤ VIN ≤25V, 0 ≤ IOUT ≤IMAXLOAD ♦11.76 12.00 12.24

VREF Reference Voltage4ADJ. (VIN - VOUT)= 3V, IOUT = 10mA, TJ= 25°C 1.238 1.250 1.262 V

1.5V ≤ (VIN - VOUT)≤25V, 10mA ≤ IOUT ≤IMAXLOAD ♦1.225 1.250 1.270

REG(LINE)

Line Regulation2,3

3.3V 4.8V ≤ VIN ≤15V, IOUT = 0, TJ= 25°C 0.5 6mV

4.8V ≤ VIN ≤15V, IOUT = 0 ♦1.0 6

5.0V 6.5V ≤ VIN ≤20V, IOUT = 0, TJ= 25°C 0.5 10 mV

6.5V ≤ VIN ≤20V, IOUT = 0 ♦1.0 10

12V 13.5V ≤ VIN ≤25V, IOUT = 0, TJ= 25°C 1.0 25 mV

13.5V ≤ VIN ≤25V, IOUT = 0 ♦2.0 25

ADJ.

1.5V ≤(VIN - VOUT)≤15V, ILOAD = 10mA, TJ= 25°C 0.015 0.2 %

1.5V ≤(VIN - VOUT)≤15V, ILOAD = 10mA ♦0.035 0.2

15V ≤ (VIN - VOUT)≤35V ♦0.050 0.5

REG(LOAD)

Load Regulation2,3,4

3.3V VIN = 5V, 0 ≤ IOUT ≤3A, TJ= 25°C 315 mV

VIN = 5V, 0 ≤ IOUT ≤3A ♦720

5.0V VIN = 8V, 0 ≤ IOUT ≤IMAXLOAD,TJ= 25°C 520 mV

VIN = 8V, 0 ≤ IOUT ≤IMAXLOAD ♦10 35

12V VIN = 15V, 0 ≤ IOUT ≤IMAXLOAD,TJ= 25°C 12 36 mV

VIN = 15V, 0 ≤ IOUT ≤IMAXLOAD ♦24 72

ADJ.

(VIN - VOUT) = 3V,10mA ≤ IOUT ≤IMAXLOAD,

TJ= 25°C 0.1 0.3 %

(VIN - VOUT) = 3V, 10mA ≤ IOUT ≤IMAXLOAD ♦0.2 0.4

VDDropout Voltage5

3.3V ΔVOUT = 33mV,IOUT = IMAXLOAD ♦1.3 1.5

5.0V ΔVOUT = 50mV,IOUT = IMAXLOAD ♦1.3 1.5

12V ΔVOUT = 120mV,IOUT = IMAXLOAD ♦1.3 1.5

ADJ ΔVOUT = 1%V ,IOUT = IMAXLOAD ♦1.3 1.5

Document Number 3452

Issue 4

Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is

believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in

its use. Semelab encourages customers to verify that datasheets are current before placing orders.

Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.

E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk

LT1085

LT1085G

LT1085IG

LT1085SMD

ELECTRICAL CHARACTERISTICS (TA= 25°C Unless otherwise stated) LT1085IG VARIANT

The ♦ denotes specification is applicable over full operating temperature range.

Parameter Output

Voltage Test Conditions Min. Typ. Max. Unit

VOOutput Voltage3,4,6

3.3V VIN = 5V, IOUT = 0, TJ= 25°C (K Pack) 3.270 3.300 3.333 V

4.8V ≤ VIN ≤15V, 0 ≤ IOUT ≤IMAXLOAD ♦3.235 3.300 3.365

5.0V VIN = 8V, IOUT = 0, TJ= 25°C (K Pack) 4.950 5.000 5.050 V

6.5V ≤ VIN ≤20V, 0 ≤ IOUT ≤IMAXLOAD ♦4.900 5.000 5.100

12V VIN = 15V, IOUT = 0, TJ= 25°C (K Pack) 11.88 12.00 12.12 V

13.5V ≤ VIN ≤25V, 0 ≤ IOUT ≤IMAXLOAD ♦11.76 12.00 12.24

VREF Reference Voltage4ADJ. (VIN - VOUT)= 3V, IOUT = 10mA, TJ= 25°C 1.231 1.250 1.268 V

1.5V ≤ (VIN - VOUT)≤25V, 10mA ≤ IOUT ≤IMAXLOAD ♦1.219 1.250 1.281

REG(LINE)

Line Regulation2,3

3.3V 4.8V ≤ VIN ≤15V, IOUT = 0, TJ= 25°C 0.5 6mV

4.8V ≤ VIN ≤15V, IOUT = 0 ♦1.0 6

5.0V 6.5V ≤ VIN ≤20V, IOUT = 0, TJ= 25°C 0.5 10 mV

6.5V ≤ VIN ≤20V, IOUT = 0 ♦1.0 10

12V 13.5V ≤ VIN ≤25V, IOUT = 0, TJ= 25°C 1.0 25 mV

13.5V ≤ VIN ≤25V, IOUT = 0 ♦2.0 25

ADJ.

1.5V ≤(VIN - VOUT)≤15V, ILOAD = 10mA, TJ= 25°C 0.015 0.2 %

1.5V ≤(VIN - VOUT)≤15V, ILOAD = 10mA ♦0.035 0.2

15V ≤ (VIN - VOUT)≤35V ♦0.050 0.5

REG(LOAD)

Load Regulation2,3,4

3.3V VIN = 5V, 0 ≤ IOUT ≤3A, TJ= 25°C 315 mV

VIN = 5V, 0 ≤ IOUT ≤3A ♦720

5.0V VIN = 8V, 0 ≤ IOUT ≤IMAXLOAD,TJ= 25°C 520 mV

VIN = 8V, 0 ≤ IOUT ≤IMAXLOAD ♦10 35

12V VIN = 15V, 0 ≤ IOUT ≤IMAXLOAD,TJ= 25°C 12 36 mV

VIN = 15V, 0 ≤ IOUT ≤IMAXLOAD ♦24 72

ADJ.

(VIN - VOUT) = 3V,10mA ≤ IOUT ≤IMAXLOAD,

TJ= 25°C 0.7 1.25 %

(VIN - VOUT) = 3V, 10mA ≤ IOUT ≤IMAXLOAD ♦0.8 1.65

VDDropout Voltage5

3.3V ΔVOUT = 33mV,IOUT = IMAXLOAD ♦1.3 1.5

5.0V ΔVOUT = 50mV,IOUT = IMAXLOAD ♦1.3 1.5

12V ΔVOUT = 120mV,IOUT = IMAXLOAD ♦1.3 1.5

ADJ ΔVOUT = 1%V ,IOUT = IMAXLOAD ♦1.3 1.5

Document Number 3452

Issue 4

Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is

believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in

its use. Semelab encourages customers to verify that datasheets are current before placing orders.

Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.

E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk

LT1085

LT1085G

LT1085IG

LT1085SMD

Document Number 3452

Issue 4

Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is

believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in

its use. Semelab encourages customers to verify that datasheets are current before placing orders.

ELECTRICAL CHARACTERISTICS (TA= 25°C Unless otherwise stated)

The ♦ denotes specification is applicable over full operating temperature range.

Parameter Output

Voltage Test Conditions Min. Typ. Max. Unit

ILCurrent Limit

3.3V VIN = 8V ♦3.2 4.0

5.0V VIN = 10V ♦3.2 4.0

12V VIN = 17V ♦3.2 4.0

ADJ. (VIN-VOUT) = 5V ♦3.2 4.0

(VIN-VOUT) = 25V ♦0.2 0.5

IQQuiescient/MinLoad

Current

3.3V VIN = 18V ♦5.0 10.0

5.0V VIN ≤20V ♦5.0 10.0

12V VIN ≤25V ♦5.0 10.0

ADJ. (VIN-VOUT) = 25V ♦5.0 10.0

IPIN Adjust Pin Current

ADJ. Over Full Operating Temperature Range ♦120

μA

ΔIPIN Adjust Pin Current

Change 1.5V ≤(VIN - VOUT)≤25V, 10mA ≤ IOUT ≤IMAXLOAD ♦0.2 5.0

Thermal Regulation ALL TA= 25°C, 30ms Pulse 0.004 0.020 %/W

Ripple Rejection4

3.3V VIN = 6.3V, f = 120Hz, COUT=25μF, IOUT = 3A ♦ 60 72

5.0V VIN = 8V, f = 120Hz, COUT=25μF, IOUT = 3A ♦60 68

12V VIN = 15V, f = 120Hz, COUT=25μF, IOUT = 3A ♦54 60

ADJ. (VIN-VOUT) = 3V, f = 120Hz, COUT=25μF,

CADJ=25μF, IOUT = IMAXLOAD , ♦60 75

Temperature Stability ALL Over Full Operating Temperature Range ♦0.5 %

Long Term Stability ALL TA= 125°C, 1000 Hours 0.3 1.0 %

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

Note 1 : Absolute Maximum Rating area those values beyond which the

life of a device may be impaired.

Note 2 : See thermal regulation specifications for changes in output volt-

age due to heating effects. Load and line regulation are measured at a

constant junction temperature by low duty cycle pulse testing.

Note 3 : Line and load regulation are guaranteed up to the maximum

power dissipation of 30W. Power dissipation is determined by the

input/output differential and the output current. Guaranteed maximum

power dissipation will not be available over the full input/output range.

Note 4 : IMAXLOAD curve is defined as the minimum value of current limit

as a function of input to output voltage. Note that the 30W power dissipa-

tion for the LT1085 series is only achievable over a limited range of input

to output.voltage.

Note 5 : Dropout voltage is specified over the full output current range of

the device.

Note 6 : Full load current is not available at all input-output voltages. See

Notes 3, 4,

Semelab plc. Telephone +44(0)1455 556565. Fax +44(0)1455 552612.

E-mail: sales@semelab.co.uk Website: http://www.semelab.co.uk

LT1085

LT1085G

LT1085IG

LT1085SMD

G & IG Packag es (TO–257)

123

0.89 (0.035)

1.14 (0.045)

10.41 (0.410)

10.67 (0.420)

3.56 (0.140)

3.81 (0.150)

4.83 (0.190)

5.08 (0.200)

10.41 (0.410)

10.92 (0.430)

13.38 (0.527)

13.64 (0.537)

16.38 (0.645)

16.89 (0.665)

0.64 (0.025)

0.89 (0.035)

3.05 (0.120)

BSC

2.54 (0.100)

BSC

Dia.

12.07 (0.500)

19.05 (0.750)

Dia.

K Packag e (TO–3)

SMD1 PACKAGE

LT1085

Pin Fixed Adjustable

1 COMMON ADJUST

2 OUTPUT OUTPUT

3 INPUT INPUT

Case is OUTPUT

Pin Fixed Adjustable

1 COMMON ADJUST

2 INPUT INPUT

Case is OUTPUT

LT1085SMD

Pin Fixed Adjustable

1 COMMON ADJUST

2 OUTPUT OUTPUT

3 INPUT INPUT

LT1085G Pin Fixed Adjustable

1 COMMON ADJUST

2 OUTPUT OUTPUT

3 INPUT INPUT

Case is ISOLATED

LT1085IG

40.01 (1.575)

Max.

4.47 (0.176)

Rad.

2 Pls.

22.23 (0.875)

Max.

11.43 (0.450)

6.35 (0.250)

12.19 (0.48)

11.18 (0.44)

1.63 (0.064)

1.52 (0.060)

1.09 (0.043)

0.97 (0.038)

Dia.

30.40 (1.197)

29.90 (1.177)

16.97 (0.668)

16.87 (0.664)

4.09 (0.161)

3.84 (0.151)

2 Pls

11.18 (0.440)

10.67 (0.420)

26.67

(1.050)

Max.

3.60 (0.142)

Max.

3.70 (0.146)

3.41 (0.134) 3.70 (0.146)

3.41 (0.134)

4.14 (0.163)

3.84 (0.151)

10.69 (0.421)

10.39 (0.409)

16.02 (0.631)

15.73 (0.619)

0.76

(0.030)

min.

Document Number 3452

Issue 4

Semelab Plc reserves the right to change test conditions, parameter limits and package dimensions without notice. Information furnished by Semelab is

believed to be both accurate and reliable at the time of going to press. However Semelab assumes no responsibility for any errors or omissions discovered in

its use. Semelab encourages customers to verify that datasheets are current before placing orders.