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LTC4449 Datenblatt(PDF) 6 Page - Linear Technology

Teilenummer LTC4449
Bauteilbeschribung  Dual, Multiphase Current Mode Synchronous Controller for Sub-Milliohm DCR Sensing
PDF  38 Pages
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Hersteller  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

LTC4449 Datenblatt(HTML) 6 Page - Linear Technology

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LTC3774
6
3774fc
For more information www.linear.com/LTC3774
TYPICAL PERFORMANCE CHARACTERISTICS
Power Loss
TK/SS Pull-Up Current
vs Temperature
RUN Threshold vs Temperature
Regulated Feedback Voltage
vs Temperature
Oscillator Frequency
vs Temperature
Undervoltage Lockout Threshold
(INTVCC) vs Temperature
Efficiency
Power Loss
Efficiency
ILOAD (A)
0.01
10
3774 G09
90
80
60
40
0.1
1
100
20
10
70
50
30
0
100
BURST MODE
PULSE-SKIPPING
CCM
VIN = 7V
VOUT = 1.5V
ILOAD (A)
0.01
10
3774 G10
4.5
4.0
3.0
2.0
0.1
1
100
1.0
0.5
3.5
2.5
1.5
0
5.0
BURST MODE
PULSE-SKIPPING
CCM
VIN = 7V
VOUT = 1.5V
ILOAD (A)
0.01
10
3774 G11
90
80
60
40
0.1
1
100
20
10
70
50
30
0
100
VIN = 12V
VOUT = 1.5V
BURST MODE
PULSE-SKIPPING
CCM
ILOAD (A)
0.01
10
3774 G12
4.5
4.0
3.0
2.0
0.1
1
100
1.0
0.5
3.5
2.5
1.5
0
5.0
BURST MODE
PULSE-SKIPPING
CCM
VIN = 12V
VOUT = 1.5V
TEMPERATURE (°C)
–50
25
3774 G13
1.4
–25
0
50
125
75 100
150
1.2
1.1
1.3
1
1.5
TEMPERATURE (°C)
–50
25
3774 G14
1.3
–25
0
50
125
75 100
150
1.1
1.0
1.2
0.9
1.4
ON
OFF
TEMPERATURE (°C)
–50
25
3774 G15
603.0
–25
0
50
125
75 100
150
600.0
598.5
597.0
601.5
595.5
604.5
TEMPERATURE (°C)
–50
25
3774 G16
625
–25
0
50
125
75 100
150
575
550
675
650
525
600
500
700
TEMPERATURE (°C)
–50
3.0
3.2
3.6
3.8
4.0
5.0
4.4
0
50
75
3774 G17
3.4
4.6
4.8
4.2
–25
25
100 125 150
RISE
FALL



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