Datasheet
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 .......................... Indefi nite
(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
θ
JA
= 40°C/W
OBSOLETE PACKAGE
Q PACKAGE
5-LEAD PLASTIC DD
FRONT VIEW
V
IN
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
θ
JA
= 30°C/W
1
2
3
4
8
7
6
5
TOP VIEW
OUTPUT
GND
NC
S8 PACKAGE
8-LEAD PLASTIC SO
V
IN
GND
GND
SHDN
SENSE/
ADJ*
*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5
= ADJ FOR LT1129
θ
JA
= 60°C/W
3
2
1
FRONT VIEW
TAB
IS
GND
ST PACKAGE
3-LEAD PLASTIC SOT-223
OUTPUT
GND
V
IN
θ
JA
= 50°C/W
T PACKAGE
5-LEAD PLASTIC TO-220
V
IN
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
θ
JA
= 50°C/W
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