LT1121CS8#TR Linear Technology, LT1121CS8#TR Datasheet - Page 7
LT1121CS8#TR
Manufacturer Part Number
LT1121CS8#TR
Description
IC REG LDO ADJ 150MA 8-SOIC
Manufacturer
Linear Technology
Datasheet
1.LT1121CZ-5PBF.pdf
(16 pages)
Specifications of LT1121CS8#TR
Regulator Topology
Positive Adjustable
Voltage - Output
3.75 ~ 30 V
Voltage - Input
4.17 ~ 30 V
Voltage - Dropout (typical)
0.42V @ 150mA
Number Of Regulators
1
Current - Output
150mA
Operating Temperature
0°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
8-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
Current - Limit (min)
-
Available stocks
Company
Part Number
Manufacturer
Quantity
Price
TYPICAL PERFORMANCE CHARACTERISTICS
–10
–15
–20
–25
–30
–35
–40
100
–5
30
25
20
15
10
90
80
70
60
50
40
30
20
10
5
0
0
0
–50
–50
0
Reverse Output Current
Reverse Output Current
Load Regulation
ΔI
V
V
V
V
T
V
CURRENT FLOWS
INTO OUTPUT PIN
* ADJ PIN TIED TO
IN
OUT
OUT
OUT
J
IN
LOAD
OUTPUT PIN
= 25°C
1
–25
= 0V
–25
= 0V
= 5V (LT1121-5)
= 3.3V (LT1121-3.3)
= 3.8V (LT1121)
= 1mA TO 150mA
2
OUTPUT VOLTAGE (V)
0
0
TEMPERATURE (°C)
TEMPERATURE (°C)
3
(V
LT1121-3.3
LT1121*
OUT
4
25
25
= V
LT1121
5
50
50
ADJ
LT1121-5
6
)
7
75
75
LT1121-3.3
LT1121-5
8
100
100
1121 G28
1121 G22
1121 G25
9
125
125
10
–0.1
–0.2
150
100
400
350
300
250
200
150
100
0.2
0.1
50
64
62
60
58
56
54
52
50
0
0
–50
0
0
Current Limit
Ripple Rejection
LT1121-5
Load Transient Response
V
V
C
C
V
+ 0.5V
I
OUT
IN
IN
OUT
OUT
IN
0.1
–25
= 6V
= 0.1μF
= V
1
= 100mA
= 0V
= 1μF
P-P
0.2 0.3
OUT
RIPPLE AT f = 120Hz
(NOMINAL) + 1V
2
0
INPUT VOLTAGE (V)
TEMPERATURE (°C)
0.4
TIME (ms)
25
3
0.5
LT1121/LT1121-3.3/LT1121-5
50
4
0.6
0.7
75
5
0.8
100
6
0.9
1121 G23
1121 G29
1121 G26
1.0
125
7
–0.1
–0.2
150
100
400
350
300
250
200
150
100
100
0.2
0.1
50
50
90
80
70
60
50
40
30
20
10
0
0
0
–50
10
0
Current Limit
Ripple Rejection
LT1121-5
Load Transient Response
V
V
V
C
C
I
V
IN
OUT
OUT
IN
IN
OUT
IN
0.1
= 7V
–25
= 6V
= 0.1μF
= 6V + 50mV
= 0V
= 100mA
= 3.3μF
0.2 0.3
100
0
TEMPERATURE (°C)
FREQUENCY (Hz)
SOLID TANTALUM
0.4
RMS
1k
TIME (ms)
25
0.5
RIPPLE
C
SOLID TANTALUM
OUT
50
0.6
C
10k
OUT
= 1μF
0.7
75
= 47μF
100k
0.8
100
0.9
1121 G24
1121 G30
1121 G27
1121ff
7
125
1.0
1M