LT1121IS8-3.3#PBF Linear Technology, LT1121IS8-3.3#PBF Datasheet - Page 7
LT1121IS8-3.3#PBF
Manufacturer Part Number
LT1121IS8-3.3#PBF
Description
IC REG LDO 3.3V 150MA 8-SOIC
Manufacturer
Linear Technology
Datasheet
1.LT1121CZ-5PBF.pdf
(16 pages)
Specifications of LT1121IS8-3.3#PBF
Regulator Topology
Positive Fixed
Voltage - Output
3.3V
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)
Primary Input Voltage
20V
Output Voltage Fixed
3.3V
Dropout Voltage Vdo
420mV
No. Of Pins
8
Output Current
150mA
Operating Temperature Range
-40°C To +125°C
Msl
MSL 1 - Unlimited
Rohs Compliant
Yes
Voltage Regulator Type
Linear
Topology
LDO
Regulator Output Type
Fixed
Polarity Type
Positive
Number Of Outputs
Single
Input Voltage (min)
-30V
Input Voltage (max)
30V
Output Voltage
3.3V
Package Type
SOIC N
Load Regulation
-25mV
Line Regulation
10mV
Operating Temp Range
-40C to 125C
Operating Temperature Classification
Automotive
Dropout Voltage@current (max)
0.16@1mA/0.35@50mA
Dropout Voltage@current (typ)
0.13@1mA/0.42@150mA
Pin Count
8
Mounting
Surface Mount
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Current - Limit (min)
-
Lead Free Status / Rohs Status
Compliant
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