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LT3045 Datasheet(PDF) 17 Page - Analog Devices

Part # LT3045
Description  42V, 1A/2.5A Step-Down Silent Switcher 3 with Ultra-Low Noise Reference
PDF  44 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3045 Datasheet(HTML) 17 Page - Analog Devices

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Data Sheet
LT83401/LT83402
analog.com
Rev. 0
17 of 44
Figure 34. PG High Thresholds
Figure 35. PG Low Thresholds
Figure 36. Error Amp Output Current
Figure 37. Switch Rising Edge
Figure 38. Switching Waveforms, Full-Frequency
Continuous Operation
Figure 39. Switching Waveforms, Full-Frequency
Pulse-Skipping Operation
PGFB RISING
PGFB FALLING
TEMPERATURE (°C)
–50
–25
0
25
50
75
100
125
150
500
510
520
530
540
550
PGFB RISING (START-UP)
PGFB RISING
PGFB FALLING
TEMPERATURE (°C)
–50
–25
0
25
50
75
100
125
150
450
455
460
465
470
475
480
485
490
495
500
VC = 1.2V
VSET = 3.3V
–250 –200 –150 –100 –50
0
50
100
150
200
250
–500
–400
–300
–200
–100
0
100
200
300
400
500
VOUTS TO VSET ERROR (mV)
VIN = 12V
ILOAD = 2.5A
2ns/DIV
VSW
2V/DIV
12VIN TO 3.3VOUT AT 2.5A
fSW = 2MHz
500ns/DIV
VSW
5V/DIV
IL
1A/DIV
12VIN TO 3.3VOUT AT 50mA
VSYNC = 0V
500ns/DIV
VSW
5V/DIV
IL
100mA/DIV



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