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LT3757 Datasheet(PDF) 6 Page - Analog Devices

Part # LT3757
Description  36V, 4A Synchronous Step-Down LED Driver with Silent Switcher
PDF  22 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3757 Datasheet(HTML) 6 Page - Analog Devices

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LT3935
6
Rev. 0
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS
VREF Line Regulation
INTVCC and VREF UVLO Falling
Threshold
SW Frequency
RP and RT Pin Current Limit
SS Pin Pull-Up Current
SS Threshold
Peak SW Current Limit
Peak Current vs Temperature
Power Switch On-Resistance
150°C
30°C
–45°C
VIN VOLTAGE (V)
0
6
12
18
24
30
36
1.97
1.98
1.99
2.00
2.01
2.02
2.03
VREF Line Regulation
3935 G10
INTVCC
VREF
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
1.2
1.5
1.8
2.1
2.4
2.7
3.0
3.3
Threshold
INTVCC and VREF UVLO Falling
3935 G11
RT = 45.3k
RT = 532k
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
1400
1600
1800
2000
2200
180
200
220
240
260
SW Frequency
3935 G12
RP CURRENT
RT CURRENT
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
20
30
40
50
60
70
RP and RT Pin Current Limit
3935 G13
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
16
17
18
19
20
21
22
23
24
SS Pin Pull–Up Current
3935 G14
SS HIGH RISING
SS LOW FALLING
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
0
0.4
0.8
1.2
1.6
2.0
SS Threshold
3935 G15
DUTY RATIO (%)
10
30
50
70
90
5.0
5.5
6.0
6.5
7.0
7.5
8.0
Peak SW Current Limit
3935 G16
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
5.0
5.5
6.0
6.5
7.0
7.5
8.0
Peak Current vs Temperature
3935 G17
TOP SWITCH
BOTTOM SWITCH
TEMPERATURE (°C)
–50 –25
0
25
50
75 100 125 150
0
20
40
60
80
100
Power Switch On-Resistance
3935 G18



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