LT1121AIS8#TRPBF Linear Technology, LT1121AIS8#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LT1121AIS8#TRPBF
• Description: IC REG LDO ADJ 150MA 8-SOIC
• Manufacturer: Linear Technology

Specifications of LT1121AIS8#TRPBF

• 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: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 8-SOIC (3.9mm Width)
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Current - Limit (min): -

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