LT1129/LT1129-3.3/LT1129-5

2

112935ff

ABSOLUTE MAXIMUM RATINGS

Input Voltage ...................................................... ± 30V*

Output Pin Reverse Current ................................. 10mA

Sense Pin Current ................................................ 10mA

Adjust Pin Current ................................................ 10mA

Sense Pin, Adjust Pin Reverse Voltage ............... – 0.6V

Shutdown Pin Input Voltage (Note 2) ......... 6.5V, – 0.6V

Shutdown Pin Input Current (Note 2) .................. 20mA

Output Short-Circuit Duration .......................... Indefinite

(Note 1)

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

Operating Junction Temperature Range (Note 3)

LT1129C-X .......................................... 0°C to 125°C

LT1129C-X Extended Temperature Range

(Note 12) ....................................... –40°C to 125°C

LT1129I-X(Note 12) ......................... –40°C to 125°C

LT1129MP-X(Note 12)..................... –55°C to 125°C

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

* For applications requiring input voltage ratings greater than 30V, contact the factory.

1

2

3

4

5

6

7

8

9

10

TOP VIEW

F PACKAGE

20-LEAD PLASTIC TSSOP

20

19

18

17

16

15

14

13

12

11

GND

GND

GND

GND

GND

GND

OUT

SENSE

GND

GND

GND

GND

GND

GND

GND

GND

IN

SHDN

GND

GND

NOTE: ALL GROUND PINS ARE INTERNALLY CONNECTED

OBSOLETE PACKAGE

Q PACKAGE

5-LEAD PLASTIC DD

FRONT VIEW

SHDN

GND

SENSE/ADJ*

OUTPUT

5

4

3

2

1

TAB

IS

GND

*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5

= ADJ FOR LT1129

1

2

3

4

8

7

6

5

TOP VIEW

OUTPUT

GND

NC

S8 PACKAGE

8-LEAD PLASTIC SO

GND

GND

SHDN

SENSE/

ADJ*

*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5

= ADJ FOR LT1129

3

2

1

FRONT VIEW

TAB

IS

GND

ST PACKAGE

3-LEAD PLASTIC SOT-223

OUTPUT

GND

T PACKAGE

5-LEAD PLASTIC TO-220

SHDN

GND

SENSE/ADJ*

OUTPUT

FRONT VIEW

5

4

3

2

1

TAB

IS

GND

*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5 = ADJ FOR LT1129

PIN CONFIGURATION

LEAD FREE FINISH

TAPE AND REEL

PART MARKING*

PACKAGE DESCRIPTION

TEMPERATURE RANGE

LT1129CS8#PBF

LT1129CS8#TRPBF

1129

8-Lead Plastic SO

0°C to 125°C

LT1129IS8#PBF

LT1129IS8#TRPBF

1129I

8-Lead Plastic SO

–40°C to 125°C

LT1129CS8-3.3#PBF

LT1129CS8-3.3#TRPBF

11293

8-Lead Plastic SO

0°C to 125°C

LT1129IS8-3.3#PBF

LT1129IS8-3.3#TRPBF

1129I3

8-Lead Plastic SO

–40°C to 125°C

LT1129CS8-5#PBF

LT1129CS8-5#TRPBF

11295

8-Lead Plastic SO

0°C to 125°C

ORDER INFORMATION