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LTC3850IUF-TRPBF Datasheet(PDF) 7 Page - Linear Technology

Part # LTC3850IUF-TRPBF
Description  Dual, 2-Phase Synchronous Step-Down Switching Controller
Download  36 Pages
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Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC3850IUF-TRPBF Datasheet(HTML) 7 Page - Linear Technology

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LTC3850/LTC3850-1
7
38501fb
TYPICAL PERFORMANCE CHARACTERISTICS
Quiescent Current
vs Input Voltage without EXTVCC
INTVCC Line Regulation
Current Sense Threshold
vs ITH Voltage
Maximum Current Sense Threshold
vs Common Mode Voltage
Maximum Current Sense
Threshold vs Duty Cycle
Maximum Current Sense Voltage vs
Feedback Voltage (Current Foldback)
TK/SS Pull-Up Current
vs Temperature
Tracking Up and Down
with External Ramp
10ms/DIV
VOUT1
3.3V
3Ω LOAD
1V/DIV
VOUT2
1.8V
1.5Ω LOAD
1V/DIV
TK/SS1
TK/SS2
2V/DIV
38501 G10
INPUT VOLTAGE (V)
5
2
3
25
38501 G11
1
0
10
15
20
5
4
INPUT VOLTAGE (V)
38501 G12
4.75
5.00
5.25
4.50
4.25
4.00
3.75
3.50
020
510
15
25
VITH (V)
0
–40
–20
0
20
40
60
80
0.5
1
1.5
2
38501 G13
ILIM = INTVCC
ILIM = GND
ILIM = FLOAT
VSENSE COMMON MODE VOLTAGE (V)
0
30
40
50
3
5
20
10
0
12
4
60
70
80
38501 G14
ILIM = INTVCC
ILIM = GND
ILIM = FLOAT
60
80
100
40
20
50
70
90
30
10
0
DUTY CYCLE (%)
0
60
100
20
40
80
38501 G15
ILIM = INTVCC
ILIM = GND
ILIM = FLOAT
FEEDBACK VOLTAGE (V)
0
40
50
60
0.8
38501 G16
30
20
0
0.2
0.4
0.6
0.1
0.9
0.3
0.5
0.7
10
80
70
ILIM = INTVCC
ILIM = FLOAT
ILIM = GND
TEMPERATURE (°C)
–50
2.00
1.75
1.50
1.25
1.00
25
75
38501 G17
–25
0
50
100


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