2

LT1072

1072fc

Supply Voltage

LT1072HV (See Note 1) ......................................... 60V

LT1072 (See Note 1) ............................................. 40V

Switch Output Voltage

LT1072HV ............................................................. 75V

LT1072 .................................................................. 65V

LT1072S8 .............................................................. 60V

Feedback Pin Voltage (Transient, 1ms) ................. ±15V

Operating Junction Temperature Range

LT1072HVM, LT1072M (OBSOLETE) .... –55°C to 150°C

LT1072HVC, LT1072C (Oper.)* ............ 0°C to 100°C

LT1072HVC, LT1072C (Sh. Ckt.)* ........ 0°C to 125°C

LT1072HVI ....................................... –40°C to 125°C

Storage Temperature Range ............... –65°C to 150°C

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

*Includes LT1072S8

(Note 1)

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

Note 1: Minimum switch “on” time for the LT1072 in current limit is

≈ 0.7µsec. This limits the maximum input voltage during short-circuit

conditions,

in the buck and inverting modes only,

to ≈ 40V. Normal

(unshorted) conditions are not affected. If the LT1072 is being operated in

the buck or inverting mode at high input voltages and short-circuit

conditions are expected, a resistor must be placed in series with the

inductor, as follows:

The value of the resistor is given by:

R =

t = Minimum “on” time of LT1072 in current limit, ≈ 0.7µs

f = Operating frequency (40kHz)

OBSOLETE PACKAGE

OBSOLETE PACKAGE

Consider the S8 or N8 Packages for Alternate Source

T PACKAGE

5-LEAD TO-220

GND

FB

FRONT VIEW

5

4

3

2

1

N PACKAGE

8-LEAD PDIP

J PACKAGE

8-LEAD CERAMIC DIP

1

2

3

4

8

7

6

5

TOP VIEW

GND

FB

NC

E2

E1

1

2

3

4

5

6

7

8

SW PACKAGE

16-LEAD PLASTIC SO WIDE

16

15

14

13

12

11

10

9

NC

NC

GND

FB

NC

NC

NC

NC

NC

E2

E1

NC

NC

TOP VIEW

BOTTOM VIEW

K PACKAGE

4-LEAD TO-3 METAL CAN

CASE IS

GND

1

4

2

3

FB

LT1072HVMK

LT1072MK

LT1072HVCK

LT1072CK

ORDER PART

NUMBER

ORDER PART

NUMBER

ORDER PART

NUMBER

ORDER PART

NUMBER

LT1072CT

LT1072HVCT

LT1072HVIT

LT1072CN8

LT1072CS8

LT1072MJ8

LT1072CJ8

LT1072CSW

LT1072 • POI01

1

2

3

4

8

7

6

5

TOP VIEW

E2

E1

GND

FB

NC

S8 PACKAGE

8-LEAD PLASTIC SO

S8 PART

MARKING

1072

ABSOLUTE

AXI U

RATI GS

PACKAGE/ORDER I FOR ATIO