LTC4355 LINER [Linear Technology], LTC4355 Datasheet - Page 10

• Manufacturer Part Number: LTC4355
• Description: Positive High Voltage Ideal Diode-OR with Input Supply and Fuse Monitors
• Manufacturer: LINER [Linear Technology]

applicaTions inForMaTion
LTC4355
Adjust R2 down by 1% to 344kW to account for its tolerance.
The next lower standard resistor value is R2 = 340kW.
The LED D1, a Panasonic Green LN1351C, requires at
least 1mA of current to fully turn on. Therefore, R5 is set
to 33kW to accommodate the lowest input supply voltage
of 36V.
Layout Considerations
The following advice should be considered when laying
out a printed circuit board for the LTC4355.
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FET
Figure 2. Layout Considerations
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LTC4355
The inputs to the servo amplifiers, IN1, IN2, and OUT
should be connected as closely as possible to the
MOSFETs’ terminals for good accuracy.
Keep the traces to the MOSFETs wide and short. The PCB
traces associated with the power path through the MOS-
FETs should have low resistance (see Figure 2).
For the DFN package, pin spacing may be a concern at
voltages greater then 30V. Check creepage and clearance
guidelines to determine if this is an issue. Use no-clean
solder to minimize PCB contamination.
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FET
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