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LM51551DSST Datasheet(PDF) 9 Page - Texas Instruments

Part # LM51551DSST
Description  LM5155x 2.2-MHz Wide Input Nonsynchronous Boost, SEPIC, Flyback Controller
PDF  48 Pages
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Manufacturer  TI2 [Texas Instruments]
Direct Link  https://www.ti.com
Logo TI2 - Texas Instruments

LM51551DSST Datasheet(HTML) 9 Page - Texas Instruments

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Temperature (qC)
-40
-20
0
20
40
60
80
100
120
140
160
0.99
0.992
0.994
0.996
0.998
1
1.002
1.004
1.006
1.008
1.01
D007
D007
D007
Figure 8-7. FB Reference vs Temperature
Temperature (qC)
-40
-20
0
20
40
60
80
100
120
140
160
0.43
0.44
0.45
0.46
0.47
0.48
0.49
0.5
0.51
0.52
0.53
0.54
0.55
0.56
D008
EN Falling
EN Rising
Figure 8-8. EN Threshold vs Temperature
VBIAS (V)
5
10
15
20
25
30
35
40
45
470
480
490
500
510
520
530
VFB=VREF, RT=221k:, VVCC=7V, COMP=1.75V
D009
Figure 8-9. IOPERATING(BIAS)including RT current vs
VBIAS
VBIAS (V)
0
5
10
15
20
25
30
35
40
45
0
0.5
1
1.5
2
2.5
3
3.5
4
D010
Figure 8-10. ISHUTDOWN(BIAS) vs VBIAS
Temperature (qC)
-40
-20
0
20
40
60
80
100
120
140
160
2.4
2.6
2.8
3
3.2
3.4
3.6
3.8
4
4.2
4.4
4.6
D011
BIAS=12V
BIAS=45V
Figure 8-11. ISHUTDOWN vs Temperature
Frequency (kHz)
0
250
500
750 1000 1250 1500 1750 2000 2250 2500
40
60
80
100
120
140
160
180
200
D012
Figure 8-12. tON(MIN) vs Frequency
www.ti.com
LM5155, LM51551
SNVSB75E – DECEMBER 2018 – REVISED AUGUST 2023
Copyright © 2023 Texas Instruments Incorporated
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Product Folder Links: LM5155 LM51551



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