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LCVT Folha de dados(PDF) 18 Page - Linear Technology

Nome de Peças LCVT
Descrição Electrónicos  36V, 2A, 2.8MHz Step-Down Switching Regulator
PDF  24 Pages
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Fabricante Electrônico  LINER [Linear Technology]
Página de início  http://www.linear.com
Logo LINER - Linear Technology

LCVT Folha de dados(HTML) 18 Page - Linear Technology

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LT3684
18
3684f
maximum load current should be derated as the ambient
temperature approaches 125°C.
Power dissipation within the LT3684 can be estimated by
calculating the total power loss from an efficiency measure-
ment and subtracting the catch diode loss and inductor
loss. The die temperature is calculated by multiplying the
LT3684 power dissipation by the thermal resistance from
junction to ambient.
Figure 9. A Well Chosen Input Network Prevents Input Voltage Overshoot and
Ensures Reliable Operation when the LT3684 is Connected to a Live Supply
APPLICATIONS INFORMATION
+
LT3684
4.7
µF
VIN
20V/DIV
IIN
10A/DIV
20
µs/DIV
VIN
CLOSING SWITCH
SIMULATES HOT PLUG
IIN
(9a)
(9b)
LOW
IMPEDANCE
ENERGIZED
24V SUPPLY
STRAY
INDUCTANCE
DUE TO 6 FEET
(2 METERS) OF
TWISTED PAIR
+
LT3684
4.7
µF
0.1
µF
0.7
Ω
VIN
20V/DIV
IIN
10A/DIV
20
µs/DIV
DANGER
RINGING VIN MAY EXCEED
ABSOLUTE MAXIMUM RATING
(9c)
+
LT3684
4.7
µF
22
µF
35V
AI.EI.
3684 F09
VIN
20V/DIV
IIN
10A/DIV
20
µs/DIV
+
Other Linear Technology Publications
Application Notes 19, 35 and 44 contain more detailed
descriptions and design information for buck regulators
and other switching regulators. The LT1376 data sheet
has a more extensive discussion of output ripple, loop
compensation and stability testing. Design Note 100
shows how to generate a bipolar output supply using a
buck regulator.



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