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LT1082

sn1082 1082fas

BSOLUTEXI

Supply Voltage ....................................................... 75V

Switch Output Voltage .......................................... 100V

Feedback Pin Voltage (Transient, 1ms) ................

±15V

Storage Temperature Range ................ – 65

°C to 150°C

Lead Temperature (Soldering, 10 sec)................. 300

°C

Operating Junction Temperature Range

LT1082M (OBSOLETE) ............... – 55

°C to 150°C

LT1082I ........................................... – 40

°C to 125°C

LT1082C ............................................... 0

°C to 100°C

ELECTRICAL C

HARA TERISTICS

SYMBOL

PARAMETER

CONDITIONS

MIN

TYP

MAX

UNITS

VREF

Reference Voltage

Measured at Feedback Pin

1.224 1.244

1.264

VC = 0.8V

1.214 1.244

1.274

Feedback Input Current

VFB = VREF

350

750

1100

Error Amplifier

∆IC = ±25µA

3000

4400

6000

µmho

Transconductance

2400

7000

µmho

Error Amplifier Source or

VC = 1.5V

150

200

400

µA

Sink Current

120

400

µA

Error Amplifier Clamp

Hi Clamp, VFB = 1V

1.8

2.3

Voltage

Lo Clamp, VFB = 1.5V

0.12

0.22

0.36

Reference Voltage Line Regulation

≤ VIN ≤ VMAX, VC = 0.8V

0.03

%/V

Error Amplifier Voltage Gain

0.9V

≤ VC ≤ 1.4V

350

650

V/V

Minimum Input Voltage

2.6

3.0

TOP VIEW

GND

VSW

VIN

N8 PACKAGE

8-LEAD PLASTIC DIP

Q PACKAGE

5-LEAD DD

VIN

VSW

GND

FRONT VIEW

T PACKAGE

5-LEAD TO-220

VIN

VSW

GND

FRONT VIEW

TJMAX = 100°C, θJA = 90°C/W (CN8)

TJMAX = 125°C, θJA = 90°C/W (IN8)

TJMAX = 100°C, θJA = 40°C/ W (CQ)

TJMAX = 125°C, θJA = 40°C/ W (IQ)

NOTE:

θJA VARIES FROM 25°C/W TO 50°C/W

DEPENDING ON BOARD COMPOSITION.

TJMAX = 100°C, θJA = 75°C/ W, θJC = 8°C/ W (CT)

TJMAX = 125°C, θJA = 75°C/ W, θJC = 8°C/ W (IT)

PACKAGE/ORDER I FOR ATIO

ORDER PART NUMBER

LT1082CN8

LT1082IN8

LT1082CQ

LT1082IQ

LT1082CT

LT1082IT

Consult LTC Marketing for parts specified with wider operating temperature ranges.

The q denotes the specifications which apply over the full operating

temperature range, otherwise specifications are at TA = 25°C. VIN = 15V, VC = 0.5V, VFB = VREF, output pin open, unless otherwise

specified.

(Note 1)

LT1082MJ8

J8 PACKAGE

8-LEAD CERAMIC DIP

TJMAX = 150°C, θJA = 100°C/W (MJ8)

OBSOLETE PACKAGE

Consider the Q Package for Alternate Source

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