LT1129IST-3.3#PBF Linear Technology, LT1129IST-3.3#PBF Datasheet - Page 7

• Manufacturer Part Number: LT1129IST-3.3#PBF
• Description: IC LDO REG W/SD 3.3V SOT223-3
• Manufacturer: Linear Technology

Specifications of LT1129IST-3.3#PBF

• Regulator Topology: Positive Fixed
• Voltage - Output: 3.3V
• Voltage - Input: 4.15 ~ 30 V
• Voltage - Dropout (typical): 0.45V @ 700mA
• Number Of Regulators: 1
• Current - Output: 700mA
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: SOT-223 (3 leads + Tab), SC-73, TO-261
• Primary Input Voltage: 20V
• Output Voltage Fixed: 3.3V
• Dropout Voltage Vdo: 400mV
• No. Of Pins: 3
• Output Current: 700mA
• 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): 4.15V
• Input Voltage (max): 30V
• Output Voltage: 3.3V
• Package Type: SOT-223
• Load Regulation: 20mV
• Line Regulation: 10mV
• Operating Temp Range: -40C to 125C
• Operating Temperature Classification: Automotive
• Dropout Voltage@current (max): 0.2@10mA/0.35@100mA
• Dropout Voltage@current (typ): 0.13@10mA/0.25@100mA
• Pin Count: 3 +Tab
• Mounting: Surface Mount
• Lead Free Status / RoHS Status: Lead free by exemption / RoHS Compliant
• Current - Limit (min): -
• Lead Free Status / Rohs Status: Compliant

TYPICAL PERFORMANCE CHARACTERISTICS
60
50
40
30
20
10
70
60
50
40
30
20
10
10
0
0
9
8
7
6
5
4
3
2
1
0
–50
0
0
LT1129-3.3
Ground Pin Current
Ground Pin Current
Shutdown Pin Current
T
V
V
V
V
DEVICE IS OPERATING
IN DROPOUT
V
J
OUT
IN
IN
IN
SHDN
1
= 25°C
0.1
–25
= 3.3V (LT1129-3.3)
= 5V (LT1129-5)
= 3.75V (LT1129)
= V
2
= 0V
SENSE
0.2
OUTPUT CURRENT (A)
0
3
INPUT VOLTAGE (V)
TEMPERATURE (°C)
*FOR V
4
0.3
25
OUT
T
5
J
0.4
= 25°C
50
= 3.3V
6
I
T
I
T
I
LOAD
LOAD
LOAD
R
J
J
R
R
0.5
LOAD
7
= –50°C
LOAD
= 125°C
75
LOAD
= 700mA*
= 500mA*
= 300mA*
8
= 4.7Ω
= 6.6Ω
= 11Ω
0.6
100
112935 G13
112935 G16
112935 G19
9
0.7
125
10
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
60
50
40
30
20
10
25
20
15
10
0
0
0
5
–50
0
LT1129-5
Ground Pin Current
Shutdown Pin Threshold
(On-to-Off)
0
Shutdown Pin Input Current
T
V
I
LOAD
J
OUT
1
= 25°C
–25
1
= V
= 1mA
SHUTDOWN PIN VOLTAGE (V)
2
2
SENSE
0
3
TEMPERATURE (°C)
INPUT VOLTAGE (V)
3
*FOR V
4
25
4
5
LT1129/LT1129-3.3/LT1129-5
OUT
50
5
= 5V
6
I
I
I
LOAD
R
LOAD
LOAD
6
R
R
LOAD
7
75
LOAD
LOAD
= 700mA*
= 500mA*
= 300mA*
7
8
= 16.6Ω
= 7.1Ω
= 10Ω
100
112935 G14
112935 G17
112935 G20
8
9
125
10
9
400
350
300
250
200
150
100
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
60
50
40
30
20
10
50
0
0
0
–50
–50
0
LT1129
Ground Pin Current
Shutdown Pin Threshold
(Off-to-On)
Adjust Pin Bias Current
T
V
V
J
OUT
ADJ
1
= 25°C
–25
–25
= V
= V
2
ADJ
OUT
0
*FOR V
0
3
INPUT VOLTAGE (V)
TEMPERATURE (°C)
TEMPERATURE (°C)
= 3.75V
4
25
25
OUT
5
= 3.75V
50
50
6
I
I
LOAD
LOAD
I
I
I
LOAD
LOAD
R
LOAD
R
R
LOAD
LOAD
LOAD
7
75
75
= 700mA
= 1mA
= 700mA*
= 500mA*
= 300mA*
8
= 12.6Ω
= 5.3Ω
= 7.5Ω
100
100
112935 G15
112935 G21
112935 G18
112935ff
9
7
125
10
125