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LT1129CQ-5 Datasheet(PDF) 8 Page - Linear Technology

Part # LT1129CQ-5
Description  400mV Dropout Voltage
Download  16 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT1129CQ-5 Datasheet(HTML) 8 Page - Linear Technology

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LT1129/LT1129-3.3/LT1129-5
8
112935ff
TYPICAL PERFORMANCE CHARACTERISTICS
Reverse Output Current
Current Limit
Current Limit
Reverse Output Current
Ripple Rejection
Ripple Rejection
INPUT VOLTAGE (V)
0
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
2
4
5
112935 G23
1
3
6
7
VOUT = 0V
TEMPERATURE (°C)
–50
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0
0
50
75
112935 G24
–25
25
100
125
VIN = 7V
VOUT = 0V
OUTPUT VOLTAGE (V)
0
100
90
80
70
60
50
40
30
20
10
0
8
112935 G25
2
4
6
10
13
57
9
TJ = 25°C, VIN = 0V
VOUT = VSENSE
(LT1129-3.3/LT1129-5)
VOUT = VADJ (LT1129)
CURRENT FLOWS
INTO DEVICE
LT1129-3.3
LT1129
LT1129-5
TEMPERATURE (°C)
–50
70
68
66
64
62
60
58
56
0
50
75
112935 G26
–25
25
100
125
(VIN – VOUT)AVG = 1V
VRIPPLE = 0.5VP-P
IL = 0.7A
FREQUENCY (Hz)
100
90
80
70
60
50
40
30
20
10
0
10
1k
10k
1M
112935 G27
100
100k
IOUT = 500mA
VIN = 6V + 50mVRMS RIPPLE
COUT = 47μF
SOLID
TANTALUM
COUT = 3.3μF
SOLID
TANTALUM
TEMPERATURE (°C)
–50
30
25
20
15
10
5
0
0
50
75
112935 G22
–25
25
100
125
VIN = 0V
VOUT = VSENSE = 5V (LT1129-5)
VOUT = VSENSE = 3.3V (LT1129-3.3)
VOUT = VADJ = 3.75V (LT1129)
LT1129-5
Transient Response
Load Regulation
LT1129-5
Transient Response
TEMPERATURE (°C)
–50
0
–5
–10
–15
–20
–25
–30
0
50
75
112935 G28
–25
25
100
125
LT1129*
LT1129-3.3
LT1129-5
VIN = VOUT(NOMINAL) + 1V
ΔILOAD = 1mA to 700mA
*VADJ = VOUT
TIME (μs)
0
0.10
0.05
0
–0.05
–0.10
400
112935 G29
50
200
300
500
0.6
0.5
100 150
250
350
450
VIN = 6V
CIN = 3.3μF
COUT = 3.3μF
TIME (ms)
0
0.2
0.1
0
–0.1
–0.2
1.6
112935 G30
0.2
0.8
1.2
2.0
0.7
0.5
0.3
0.1
0.4 0.6
1.0
1.4
1.8
VIN = 6V
CIN = 3.3μF
COUT = 47μF


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