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LT3757 Datasheet(PDF) 19 Page - Analog Devices

Part # LT3757
Description  2-Phase Dual Output Nonsynchronous Boost Controller with Hiccup Mode
PDF  38 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

LT3757 Datasheet(HTML) 19 Page - Analog Devices

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LTC7840
19
Rev 0
For more information www.analog.com
Figure 8. Leading Edge Blanking Effects
on the Minimum On-Time
Figure 9. SW Node Waveforms with Different Duty Cycle Limits
500ns/DIV
MINIMUM ON-TIME AT LIGHT LOAD WITH BLANK = SGND
VIN = 24V
VOUT = 48V
VIN = 24V
VOUT = 48V
VIN = 24V
VOUT = 48V
500ns/DIV
MINIMUM ON-TIME AT LIGHT LOAD WITH BLANK = FLOAT
500ns/DIV
7840 F08
MINIMUM ON-TIME AT LIGHT LOAD WITH BLANK = INTVCC
SW
50V/DIV
GATE
5V/DIV
IL
500mA/DIV
SW
50V/DIV
GATE
5V/DIV
IL
500mA/DIV
SW
50V/DIV
GATE
5V/DIV
IL
500mA/DIV
SW NODE
20V/DIV
SW NODE
20V/DIV
1µs/DIV
96% MAXIMUM DUTY CYCLE WITH DMAX = SGND
INDUCTOR
CURRENT
1A/DIV
1µs/DIV
84% MAXIMUM DUTY CYCLE WITH DMAX = FLOAT
INDUCTOR
CURRENT
1A/DIV
SW NODE
20V/DIV
INDUCTOR
CURRENT
1A/DIV
1µs/DIV
7840 F09
75% MAXIMUM DUTY CYCLE WITH DMAX = INTVCC
OPERATION



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