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LT3752 Datasheet(PDF) 12 Page - Analog Devices

Part # LT3752
Description  Active Clamp Synchronous Forward Controllers with Internal Housekeeping Controller
PDF  52 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3752 Datasheet(HTML) 12 Page - Analog Devices

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LT3752/LT3752-1
12
Rev. C
For more information www.analog.com
TYPICAL PERFORMANCE CHARACTERISTICS T
A = 25°C, unless otherwise noted.
SOUT (Fall) to OUT (Rise) Delay
(tSO = tAO – tAS) vs Junction
Temperature
OUT (Fall) to SOUT (Rise) Delay
(tOS) vs Junction Temperature
JUNCTION TEMPERATURE (°C)
–75
160
140
80
60
40
120
100
20
25
150
–25
100
3752 G32
175
0
125
–50
50 75
RTOS = 44.2k
RTOS = 14.7k
RTOS = 7.32k
JUNCTION TEMPERATURE (°C)
–75
120
80
100
60
–20
–40
–60
–80
–100
40
20
0
–120
25
150
–25
100
3752 G31
175
0
125
–50
50 75
RTAO = 73.2k, RTAS = 44.2k
RTAO = 44.2k, RTAS = 73.2k
ISENSEP Maximum Threshold
vs COMP
Extended Blanking Duration
vs Junction Temperature
AOUT to SOUT Delay (tAS)
vs Junction Temperature
AOUT to OUT Delay (tAO) and OUT
to AOUT Delay (tOA) vs Junction
Temperature
ISENSEP Maximum Threshold – VSLP
vs Duty Cycle (Programming Slope
Compensation)
OC Overcurrent
(Hiccup Mode) Threshold
vs Junction Temperature
JUNCTION TEMPERATURE (°C)
–75
110
105
100
85
95
90
80
25
150
–25
100
3752 G27
175
0
125
–50
50 75
JUNCTION TEMPERATURE (°C)
–75
340
300
320
280
200
180
160
260
240
220
140
25
150
–25
100
3752 G29
175
0
125
–50
50 75
RTAO = 73.2k
tAO
RTAO = 44.2k
tOA
tAO
tOA
COMP (V)
1.2
240
220
200
20
180
160
140
120
60
100
80
40
0
2.4
2.2
3752 G25
2.6
1.6
1.4
1.8
2
OC THRESHOLD
DUTY CYCLE (%)
0
240
220
200
180
160
140
90
80
3752 G26
100
20
10
30 40 50 60 70
RISLP = 0
VSLP = I(ISENSEP) • RISLP
RISLP = 1.5k
RISLP = 2k
JUNCTION TEMPERATURE (°C)
–75
340
300
320
280
200
180
160
260
240
220
140
25
150
–25
100
3752 G30
175
0
125
–50
50 75
RTAS = 73.2k
RTAS = 44.2k
JUNCTION TEMPERATURE (°C)
–75
220
200
180
100
80
160
140
120
60
25
150
–25
100
3752 G28
175
0
125
–50
50 75
RTBLNK = 73.2k
RTBLNK = 14.7k



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