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3740 Datasheet(PDF) 4 Page - Linear Technology

Part # 3740
Description  Wide Operating Range, Valley Mode, No RSENSE??Synchronous Step-Down Controller
PDF  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  LINER [Linear Technology]
Direct Link  http://www.linear.com
Logo LINER - Linear Technology

3740 Datasheet(HTML) 4 Page - Linear Technology

  3740 Datasheet HTML 1Page - Linear Technology 3740 Datasheet HTML 2Page - Linear Technology 3740 Datasheet HTML 3Page - Linear Technology 3740 Datasheet HTML 4Page - Linear Technology 3740 Datasheet HTML 5Page - Linear Technology 3740 Datasheet HTML 6Page - Linear Technology 3740 Datasheet HTML 7Page - Linear Technology 3740 Datasheet HTML 8Page - Linear Technology 3740 Datasheet HTML 9Page - Linear Technology Next Button
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background image
LT3740
4
3740fc
TYPICAL PERFORMANCE CHARACTERISTICS
Shutdown vs Maximum VC
VC vs Current Sensing Threshold
Feedback Reference Voltage
vs Temperature
PGOOD Threshold vs Temperature
Shutdown Threshold
vs Temperature
Switching Frequency
vs Temperature
SHUTDOWN (V)
0
1.0
0.8
1.6
1.4
1.8
1.2
2.0
3740 G07
0.6
0.4
0.2
0
1.5
2
1
0.5
2.5
3
VC (V)
1
150
250
200
300
3740 G08
100
50
0
1.4
1.6
1.5
1.3
1.1
1.2
1.7
1.8
RANGE = VIN
RANGE =
OPEN
RANGE = GND
TEMPERATURE (°C)
–50
800
806
808
804
802
810
3740 G09a
798
796
792
794
790
25
75
50
0
–25
100
TEMPERATURE (°C)
–50
740
760
750
770
3740 G09b
730
720
710
25
50
0
–25
75
100
TEMPERATURE (°C)
–50
0.8
1.1
1.0
0.9
1.2
3740 G10
0.7
0.6
0.5
0.4
25
50
0
–25
75
100
TEMPERATURE (°C)
–50
300
315
310
305
320
3740 G11
295
290
285
280
25
50
0
–25
75
100
(TA = 25°C, unless otherwise noted)
XREF Pin Start-Up
Load Regulation
Current Limit vs Bottom Gate
On-Time
SS
0.5V/DIV
VO
2V/DIV
IL
2A/DIV
3740 G04
VIN = 10V, VOUT = 2.5V
ILOAD = 3A
2ms/DIV
LOAD CURRENT (A)
0
–0.3
–0.4
–0.1
–0.2
0
8
3740 G05
–0.5
–0.6
–0.7
–0.8
2
4
6
10
RANGE = VIN
RANGE = OPEN
RANGE = GND
VIN = 10V
VOUT = 2.5V
RS = 12mΩ
BOTTOM GATE ON DUTY CYCLE (%)
30
100
80
160
140
180
120
200
90
3740 G06
60
40
20
0
50
60
40
70
80
100
RANGE = VIN
RANGE = OPEN
RANGE = GND



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