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LT3085EMS8E Datasheet(PDF) 6 Page - Linear Technology

Part # LT3085EMS8E
Description  Adjustable 500mA Single Resistor Low Dropout Regulator
Download  28 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LT3085EMS8E Datasheet(HTML) 6 Page - Linear Technology

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LT3085
6
3085fa
TYPICAL PERFORMANCE CHARACTERISTICS
INPUT-TO-OUTPUT DIFFERENTIAL (V)
0
0
2
4
6
8
16
14
12
10
20
6
12
18
24
3085 G19
30
36
18
ILOAD = 1mA
ILOAD = 500mA
DEVICE IN
CURRENT LIMIT
LOAD CURRENT (A)
0
0.1
0.2
8
7
6
5
4
3
2
1
0
3085 G20
0.5
0.3
0.4
TJ = –50°C
TJ = 25°C
TJ = 125°C
VIN = VCONTROL = 2V
VIN = VOUT = 1V
RTEST (Ω)
0
800
700
600
500
400
300
200
100
0
3085 G21
2k
1k
VIN = 10V
SET PIN = 0V
VIN
VOUT
RTEST
VIN = 20V
VIN = 5V
FREQUENCY (Hz)
0
40
100
10k
100k
100
10
1k
1M
3085 G22
20
60
80
30
90
10
50
70
VIN = VCONTROL = VOUT (NOMINAL) +2V
RIPPLE = 50mVP–P
COUT = 2.2μF CERAMIC
CSET = 0.1μF CERAMIC
ILOAD = 100mA
ILOAD = 500mA
FREQUENCY (Hz)
0
40
100
10k
100k
100
10
1k
1M
3085 G23
20
60
80
30
90
10
50
70
VIN = VOUT (NOMINAL) + 1V
VCONTROL = VOUT (NOMINAL) +2V
RIPPLE = 50mVP–P
COUT = 2.2μF CERAMIC
CSET = 0.1μF CERAMIC
ILOAD = 100mA
ILOAD = 500mA
FREQUENCY (Hz)
10
0
10
30
40
50
100
70
100
10k
3085 G24
20
80
90
60
1k
100k
1M
VIN = VCONTROL +2V
VCONTROL = VOUT (NOMINAL) +2V
RIPPLE = 50mVP–P
COUT = 2.2μF CERAMIC
CSET = 0.1μF CERAMIC
ILOAD = 100mA
ILOAD = 500mA
VCONTROL Pin Currrent
VCONTROL Pin Current
Residual Output Voltage with
Less Than Minimum Load
Ripple Rejection - Single Supply
Ripple Rejection - Dual Supply
- VCONTROL Pin
Ripple Rejection - Dual Supply
- IN Pin
FREQUENCY (Hz)
1
10k
10k
100k
100
10
1k
3085 G26
100
10
1k
0.1
1k
10
1.0
100
Noise Spectral Density
VOUT
100μV/DIV
TIME 1ms/DIV
3085 G27
VOUT = 1V
RSET = 100k
CSET = O.1μF
COUT = 10μF
ILOAD = 1.1A
Output Voltage Noise
FREQUENCY (Hz)
77
78
85
84
100 125 150
0
–50 –25
25
50
75
3085 G25
81
82
80
79
83
SINGLE SUPPLY OPERATION
VIN = VOUT (NOMINAL) +2V
RIPPLE = 50mVP–P, f = 120Hz
ILOAD = 0.1A
COUT = 2.2μF, CSET = 0.1μF
Ripple Rejection (120Hz)


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