LT1129/LT1129-3.3/LT1129-5
ABSOLUTE
AXI U
RATI GS
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 11) ....................................... –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.
Input Voltage ......................................................
±30V*
Output Pin Reverse Current ................................. 10mA
Sense Pin Current ................................................ 10mA
Adjust Pin Current ............................................... 10mA
Shutdown Pin Input Voltage (Note 1) ........ 6.5V, – 0.6V
Shutdown Pin Input Current (Note 1) .................. 20mA
Output Short-Circuit Duration ......................... Indefinite
PACKAGE/ORDER I FOR ATIO
TOP VIEW
FRONT VIEW
TAB
IS
GND
5
4
3
2
1
Q PACKAGE
5-LEAD DD
V
IN
SHDN
GND
SENSE/ADJ*
OUTPUT
OUTPUT 1
SENSE/ 2
ADJ*
GND 3
NC 4
S8 PACKAGE
8-LEAD PLASTIC SO
*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5
= ADJ FOR LT1129
θ
JA
≈
30°C/ W
*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
Consult factory for Military grade parts.
ORDER PART
NUMBER
LT1129CS8
LT1129CS8-3.3
LT1129CS8-5
LT1129IS8
LT1129IS8-3.3
LT1129IS8-5
PART
MARKING
1129
11293
11295
ELECTRICAL CHARACTERISTICS
PARAMETER
Regulated Output Voltage
(Notes 3,11)
CONDITIONS
LT1129-3.3
LT1129-5
LT1129 (Note 4)
Line Regulation (Note 11)
LT1129-3.3
LT1129-5
LT1129 (Note 4)
LT1129-3.3
LT1129-5
LT1129 (Note 4)
V
IN
= 3.8V, I
OUT
= 1mA, T
J
= 25°C
4.3V < V
IN
< 20V, 1mA < I
OUT
< 700mA
V
IN
= 5.5V, I
OUT
= 1mA, T
J
= 25°C
6V < V
IN
< 20V, 1mA < I
OUT
< 700mA
V
IN
= 4.3V, I
OUT
= 1mA, T
J
= 25°C
4.8V < V
IN
< 20V, 1mA < I
OUT
< 700mA
∆V
IN
= 4.8V to 20V, I
OUT
= 1mA
∆V
IN
= 5.5V to 20V, I
OUT
= 1mA
∆V
IN
= 4.3V to 20V, I
OUT
= 1mA
∆I
LOAD
= 1mA to 700mA, T
J
= 25°C
∆I
LOAD
= 1mA to 700mA
∆I
LOAD
= 1mA to 700mA, T
J
= 25°C
∆I
LOAD
= 1mA to 700mA
∆I
LOAD
= 1mA to 700mA, T
J
= 25°C
∆I
LOAD
= 1mA to 700mA
q
q
q
q
q
q
q
q
q
Load Regulation (Note 11)
2
U
U
W
W W
U
W
8 V
IN
7 GND
6 GND
5 SHDN
FRONT VIEW
3 OUTPUT
TAB
IS
GND
2 GND
1 V
IN
ST PACKAGE
3-LEAD PLASTIC SOT-223
TAB IS
GND
FRONT VIEW
5
4
3
2
1
T PACKAGE
5-LEAD TO-220
V
IN
GND
SENSE/ADJ*
OUTPUT
SHDN
*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5
= ADJ FOR LT1129
θ
JA
≈
50°C/ W
θ
JA
≈
50°C/ W
ORDER PART NUMBER
LT1129CST-3.3
LT1129CST-5
LT1129IST-3.3
LT1129IST-5
ORDER PART NUMBER
LT1129CT
LT1129CT-3.3
LT1129CT-5
LT1129IT
LT1129IT-3.3
LT1129IT-5
MIN
3.250
3.200
4.925
4.850
3.695
3.640
TYP
3.300
3.300
5.000
5.000
3.750
3.750
1.5
1.5
1.5
6
15
6
20
6
15
MAX
3.350
3.400
5.075
5.150
3.805
3.860
10
10
10
20
30
20
30
20
30
UNITS
V
V
V
V
V
V
mV
mV
mV
mV
mV
mV
mV
mV
mV
LINER [ LINEAR TECHNOLOGY ]
