Datasheet

LT1121/LT1121-3.3/LT1121-5
3
1121fg
ORDER INFORMATION
LEAD FREE FINISH TAPE AND REEL PART MARKING PACKAGE DESCRIPTION TEMPERATURE RANGE
LT1121AHVCS8#PBF LT1121AHVCS8#TRPBF 121AHV 8-Lead Plastic S0 0°C to 125°C
LT1121AIS8#PBF LT1121AIS8#TRPBF 121AI 8-Lead Plastic S0 –40°C to 125°C
LT1121AIS8-3.3#PBF LT1121AIS8-3.3#TRPBF 121AI3 8-Lead Plastic S0 –40°C to 125°C
LT1121AIS8-5#PBF LT1121AIS8-5#TRPBF 121AI5 8-Lead Plastic S0 –40°C to 125°C
LT1121AHVIS8#PBF LT1121AHVIS8#TRPBF 21AHVI 8-
Lead Plastic S0 –40°C to 125°C
LT1121CST-3.3#PBF LT1121CST-3.3#TRPBF 11213 3-Lead Plastic SOT-223 0°C to 125°C
LT1121IST-3.3#PBF LT1121IST-3.3#TRPBF 121I3 3-Lead Plastic SOT-223 –40°C to 125°C
LT1121CST-5#PBF LT1121CST-5#TRPBF 11215 3-Lead Plastic SOT-223 0°C to 125°C
LT1121IST-5#PBF LT1121IST-5#TRPBF 1121I5 3-Lead Plastic SOT-223 –40°C to 125°C
LT1121CZ3-3#PBF LT1121CZ3-3#TRPBF LT1121CZ3-3 3-Lead Plastic TO-92 0°
C to 125°C
LT1121IZ3-3#PBF LT1121IZ3-3#TRPBF LT1121IZ3-3 3-Lead Plastic TO-92 –40°C to 125°C
LT1121CZ-5#PBF LT1121CZ-5#TRPBF LT1121CZ-5 3-Lead Plastic TO-92 0°C to 125°C
LT1121IZ-5#PBF LT1121IZ-5#TRPBF LT1121IZ-5 3-Lead Plastic TO-92 –40°C to 125°C
Consult LT C Marketing for parts specified with wider operating temperature ranges. *The temperature grade is identified by a label on the shipping container.
Consult
LT C Marketing for information on nonstandard lead based finish parts.
For more information on lead free part marking, go to: http://www.linear.com/leadfree/
For more information on tape and reel specifications, go to: http://www.linear.com/tapeandreel/
ELECTRICAL CHARACTERISTICS
PARAMETER CONDITIONS MIN TYP MAX UNITS
Regulated Output Voltage (Note 4) LT1121-3.3 V
IN
= 3.8V, I
OUT
= 1mA, T
J
= 25ºC
4.3V < V
IN
< 20V, 1mA < I
OUT
< 150mA
l
3.25
3.2
3.3
3.3
3.35
3.4
V
V
LT1121-5 V
IN
= 5.5V, I
OUT
= 1mA, T
J
= 25ºC
6V < V
IN
< 20V, 1mA < I
OUT
< 150mA
l
4.925
4.85
5
5
5.075
5.15
V
V
LT1121 (Note 5) V
IN
= 4.3V, I
OUT
= 1mA, T
J
= 25ºC
4.8V < V
IN
< 20V, 1mA < I
OUT
< 150mA
l
3.695
3.64
3.75
3.75
3.805
3.86
V
V
Line Regulation
LT1121-3.3 ΔV
IN
= 4.8V TO 20V, I
OUT
= 1mA
LT1121-5 ΔV
IN
= 5.5V TO 20V, I
OUT
= 1mA
LT1121 (Note 5) ΔV
IN
= 4.3V TO 20V, I
OUT
= 1mA
l
l
l
1.5
1.5
1.5
10
10
10
mV
mV
mV
Load Regulation
LT1121-3.3 ΔI
LOAD
= 1mA to 150mA, T
J
= 25ºC
ΔI
LOAD
= 1mA to 150mA
LT1121-5
ΔI
LOAD
= 1mA to 150mA, T
J
= 25ºC
ΔI
LOAD
= 1mA to 150mA
LT1121 (Note 5) ΔI
LOAD
= 1mA to 150mA, T
J
= 25ºC
ΔI
LOAD
= 1mA to 150mA
l
l
l
–12
–20
–17
–28
–12
–18
–25
–40
–35
–50
–25
–40
mV
mV
mV
mV
mV
mV
Dropout Voltage (Note 6) I
LOAD
= 1mA, T
J
= 25ºC
I
LOAD
= 1mA
l
0.13 0.16
0.25
V
V
I
LOAD
= 50mA, T
J
= 25ºC
I
LOAD
= 50mA
l
0.3 0.35
0.5
V
V
I
LOAD
= 100mA, T
J
= 25ºC
I
LOAD
= 100mA
l
0.37 0.45
0.6
V
V
I
LOAD
= 150mA, T
J
= 25ºC
I
LOAD
= 150mA
l
0.42 0.55
0.7
V
V
The l denotes the specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25°C.