LT1129IQ-3.3 Linear Technology, LT1129IQ-3.3 Datasheet - Page 8

• Manufacturer Part Number: LT1129IQ-3.3
• Description: IC LDO REG W/SHTDWN 3.3V DDPAK-5
• Manufacturer: Linear Technology

Specifications of LT1129IQ-3.3

• 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: TO-263-5, D²Pak (5 leads + Tab), TO-263BA
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• Current - Limit (min): -

LT1129/LT1129-3.3/LT1129-5
TYPICAL PERFORMANCE CHARACTERISTICS
8
–10
–15
–20
–25
–30
100
90
80
70
60
50
40
30
20
10
–5
30
25
20
15
10
0
0
5
0
–50
–50
0
Load Regulation
Reverse Output Current
Reverse Output Current
T
V
(LT1129-3.3/LT1129-5)
V
CURRENT FLOWS
INTO DEVICE
V
ΔI
*V
V
V
V
V
J
OUT
OUT
IN
IN
OUT
OUT
OUT
1
LOAD
–25
–25
= 25°C, V
ADJ
= V
= 0V
= V
= V
LT1129-3.3
= V
= V
= V
2
= V
OUT
= 1mA to 700mA
LT1129*
SENSE
ADJ
SENSE
SENSE
ADJ
OUT
OUTPUT VOLTAGE (V)
0
LT1129-3.3
0
(NOMINAL) + 1V
TEMPERATURE (°C)
3
TEMPERATURE (°C)
IN
= 3.75V (LT1129)
(LT1129)
= 0V
= 5V (LT1129-5)
= 3.3V (LT1129-3.3)
4
25
25
LT1129
5
LT1129-5
50
50
LT1129-5
6
75
75
7
8
100
100
112935 G28
112935 G22
112935 G25
9
125
125
10
–0.05
–0.10
0.10
0.05
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.6
0.5
70
68
66
64
62
60
58
56
0
–50
0
0
Current Limit
Ripple Rejection
0
LT1129-5
Transient Response
V
(V
V
I
L
V
C
C
OUT
RIPPLE
50
IN
–25
IN
IN
OUT
= 0.7A
1
– V
= 6V
= 3.3μF
= 0V
100 150
= 3.3μF
OUT
= 0.5V
2
0
INPUT VOLTAGE (V)
TEMPERATURE (°C)
)
AVG
P-P
200
= 1V
25
TIME (μs)
3
250
50
4
300
350
75
5
400
100
6
112935 G23
112935 G26
112935 G29
450
125
500
7
100
–0.1
–0.2
1.4
1.2
1.0
0.8
0.6
0.4
0.2
90
80
70
60
50
40
30
20
10
0.2
0.1
0.7
0.5
0.3
0.1
0
0
–50
0
10
Current Limit
Ripple Rejection
0
LT1129-5
Transient Response
I
V
OUT
V
V
IN
V
C
C
0.2
IN
OUT
IN
IN
OUT
–25
= 6V + 50mV
= 500mA
= 7V
= 6V
= 3.3μF
100
= 0V
0.4 0.6
= 47μF
0
TEMPERATURE (°C)
FREQUENCY (Hz)
0.8
1k
RMS
25
TIME (ms)
1.0
RIPPLE
50
C
10k
1.2
TANTALUM
OUT
SOLID
1.4
75
= 3.3μF
C
TANTALUM
OUT
100k
1.6
SOLID
100
= 47μF
112935 G24
112935 G27
112935 G30
112935ff
1.8
125
1M
2.0