LT3757(RevB) View Datasheet(PDF) - Linear Technology
Part Name
Description
Manufacturer
LT3757 Datasheet PDF : 36 Pages
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LT3757
Applications Information
Check the stress on the power MOSFET by measuring its
drain-to-source voltage directly across the device terminals
(reference the ground of a single scope probe directly to
the source pad on the PC board). Beware of inductive
ringing, which can exceed the maximum specified voltage
rating of the MOSFET. If this ringing cannot be avoided,
and exceeds the maximum rating of the device, either
choose a higher voltage device or specify an avalanche-
rated power MOSFET.
The small-signal components should be placed away from
high frequency switching nodes. For optimum load regula-
tion and true remote sensing, the top of the output voltage
sensing resistor divider should connect independently to
the top of the output capacitor (Kelvin connection), staying
away from any high dV/dt traces. Place the divider resis-
tors near the LT3757 in order to keep the high impedance
FBX node short.
Figure 11 shows the suggested layout of the 8V to 16V
Input, 24V/2A Output Boost Converter.
Recommended Component Manufacturers
Some of the recommended component manufacturers
are listed in Table 2.
Table 2. Recommended Component Manufacturers
VENDOR
COMPONENTS
WEB ADDRESS
AVX
Capacitors
avx.com
BH Electronics
Inductors,
Transformers
bhelectronics.com
Coilcraft
Inductors
coilcraft.com
Cooper Bussmann
Inductors
bussmann.com
Diodes, Inc
Diodes
diodes.com
Fairchild
MOSFETs
fairchildsemi.com
General
Semiconductor
Diodes
generalsemiconductor.com
International Rectifier MOSFETs, Diodes
irf.com
IRC
Sense Resistors
irctt.com
Kemet
Capacitors
kemet.com
Magnetics Inc
Toroid Cores
mag-inc.com
Microsemi
Diodes
microsemi.com
Murata-Erie
Inductors,
Capacitors
murata.co.jp
Nichicon
Capacitors
nichicon.com
On Semiconductor
Diodes
onsemi.com
Panasonic
Capacitors
panasonic.com
Sanyo
Capacitors
sanyo.co.jp
Sumida
Inductors
sumida.com
Taiyo Yuden
Capacitors
t-yuden.com
TDK
Capacitors,
component.tdk.com
Inductors
Thermalloy
Heat Sinks
aavidthermalloy.com
Tokin
Capacitors
nec-tokinamerica.com
Toko
Inductors
tokoam.com
United Chemicon
Capacitors
chemi-com.com
Vishay/Dale
Resistors
vishay.com
Vishay/Siliconix
MOSFETs
vishay.com
Vishay/Sprague
Capacitors
vishay.com
Würth Electronik
Inductors
we-online.com
Zetex
Small-Signal
Discretes
zetex.com
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