LT1129/LT1129-3.3/LT1129-5
ABSOLUTE
AXI U RATI GS
Input Voltage ......................................................
±
30V*
Output Pin Reverse Current ................................. 10mA
Sense Pin Current ................................................ 10mA
Adjust Pin Current ............................................... 10mA
Shutdown Pin Input Voltage (Note 2) ........ 6.5V, – 0.6V
Shutdown Pin Input Current (Note 2) .................. 20mA
Output Short-Circuit Duration ......................... Indefinite
PACKAGE/ORDER I FOR ATIO
TOP VIEW
GND
GND
GND
GND
GND
GND
OUT
SENSE
GND
1
2
3
4
5
6
7
8
9
20 GND
19 GND
18 GND
17 GND
16 GND
15 GND
14 IN
13 SHDN
12 GND
11 GND
ORDER PART
NUMBER
LT1129CF-3.3
TAB
IS
GND
GND 10
F PACKAGE
20-LEAD PLASTIC TSSOP
NOTE: ALL GROUND PINS ARE
INTERNALLY CONNECTED
θ
JA
≈
40°C/ W
OBSOLETE PACKAGE
FRONT VIEW
3
TAB
IS
GND
2
1
OUTPUT
GND
V
IN
ORDER PART
NUMBER
LT1129CST-3.3
LT1129CST-5
LT1129IST-3.3
LT1129IST-5
TAB
IS
GND
ST PACKAGE
3-LEAD PLASTIC SOT-223
θ
JA
≈
50°C/ W
Consult factory for Military grade parts.
2
U
U
W
W W
U
W
(Note 1)
Storage Temperature Range ................ – 65°C to 150°C
Operating Junction Temperature Range (Note 2)
LT1129C-X ......................................... 0°C to 125°C
LT1129C-X Extended Temperature Range
(Note 12) ........................................ –40°C to 125°C
LT1129I-X ...................................... –40°C to 125°C
Lead Temperature (Soldering, 10 sec).................. 300°C
* For applications requiring input voltage ratings greater than 30V, contact the factory.
FRONT VIEW
5
4
3
2
1
Q PACKAGE
5-LEAD PLASTIC DD
*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5
= ADJ FOR LT1129
θ
JA
≈
30°C/ W
TOP VIEW
V
IN
SHDN
GND
SENSE/ADJ*
OUTPUT
OUTPUT 1
SENSE/ 2
ADJ*
GND 3
NC 4
8 V
IN
7 GND
6 GND
5 SHDN
S8 PACKAGE
8-LEAD PLASTIC SO
*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5
= ADJ FOR LT1129
θ
JA
≈
60°C/ W
ORDER PART
NUMBER
LT1129CQ
LT1129CQ-3.3
LT1129CQ-5
LT1129IQ
LT1129IQ-3.3
LT1129IQ-5
FRONT VIEW
5
4
3
2
1
T PACKAGE
5-LEAD PLASTIC TO-220
*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5
= ADJ FOR LT1129
θ
JA
≈
50°C/ W
ORDER PART
NUMBER
LT1129CS8
LT1129CS8-3.3
LT1129CS8-5
LT1129IS8
LT1129IS8-3.3
LT1129IS8-5
PART
MARKING
1129
11293
11295
1129I
1129I3
1129I5
ORDER PART
NUMBER
LT1129CT
LT1129CT-3.3
LT1129CT-5
LT1129IT
LT1129IT-3.3
LT1129IT-5
V
IN
SHDN
GND
SENSE/ADJ*
OUTPUT
112935fc
LINEAR [ LINEAR INTEGRATED SYSTEMS ]
