Datasheet

2
LT1129/LT1129-3.3/LT1129-5
A
U
G
W
A
W
U
W
ARB
S
O
LU
T
EXI T
I
S
PARAMETER CONDITIONS MIN TYP MAX UNITS
Regulated Output Voltage LT1129-3.3 V
IN
= 3.8V, I
OUT
= 1mA, T
J
= 25°C 3.250 3.300 3.350 V
(Notes 3,11) 4.3V < V
IN
< 20V, 1mA < I
OUT
< 700mA ● 3.200 3.300 3.400 V
LT1129-5 V
IN
= 5.5V, I
OUT
= 1mA, T
J
= 25°C 4.925 5.000 5.075 V
6V < V
IN
< 20V, 1mA < I
OUT
< 700mA ● 4.850 5.000 5.150 V
LT1129 (Note 4) V
IN
= 4.3V, I
OUT
= 1mA, T
J
= 25°C 3.695 3.750 3.805 V
4.8V < V
IN
< 20V, 1mA < I
OUT
< 700mA ● 3.640 3.750 3.860 V
Line Regulation (Note 11) LT1129-3.3 ∆V
IN
= 4.8V to 20V, I
OUT
= 1mA ● 1.5 10 mV
LT1129-5 ∆V
IN
= 5.5V to 20V, I
OUT
= 1mA ● 1.5 10 mV
LT1129 (Note 4) ∆V
IN
= 4.3V to 20V, I
OUT
= 1mA ● 1.5 10 mV
Load Regulation (Note 11) LT1129-3.3 ∆I
LOAD
= 1mA to 700mA, T
J
= 25°C 6 20 mV
∆I
LOAD
= 1mA to 700mA ● 15 30 mV
LT1129-5 ∆I
LOAD
= 1mA to 700mA, T
J
= 25°C 6 20 mV
∆I
LOAD
= 1mA to 700mA ● 20 30 mV
LT1129 (Note 4) ∆I
LOAD
= 1mA to 700mA, T
J
= 25°C 6 20 mV
∆I
LOAD
= 1mA to 700mA ● 15 30 mV
E
LECTR
IC
AL C CHARA TERIST
ICS
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
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.
WU
U
PACKAGE
/
O
RDER I FOR ATIO
T PACKAGE
5-LEAD TO-220
V
IN



FRONT VIEW
SHDN
OUTPUT
SENSE/ADJ*
GND

TAB IS
GND
5
4
3
2
1

*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5
= ADJ FOR LT1129
θ
JA
≈ 50°C/W
θ
JA
≈ 50°C/W
Q PACKAGE
5-LEAD DD
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
≈ 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*
θ
JA
≈ 60°C/W
*PIN 2 = SENSE FOR LT1129-3.3/LT1129-5
= ADJ FOR LT1129
ORDER PART
NUMBER
PART
MARKING
LT1129CST-3.3
LT1129CST-5
LT1129IST-3.3
LT1129IST-5
LT1129CT
LT1129CT-3.3
LT1129CT-5
LT1129IT
LT1129IT-3.3
LT1129IT-5
LT1129CQ
LT1129CQ-3.3
LT1129CQ-5
LT1129IQ
LT1129IQ-3.3
LT1129IQ-5
1129
11293
11295
ORDER PART NUMBER ORDER PART NUMBER
ORDER PART NUMBER
3
2
1

FRONT VIEW
TAB
IS
GND
OUTPUT
GND
V
IN
ST PACKAGE
3-LEAD PLASTIC SOT-223
LT1129CS8
LT1129CS8-3.3
LT1129CS8-5
LT1129IS8
LT1129IS8-3.3
LT1129IS8-5
Consult factory for Military grade parts.