DC1575A Linear Technology, DC1575A Datasheet - Page 11

• Manufacturer Part Number: DC1575A
• Description: LTC4362-1/LTC4362-2 Overvoltage/Overcurrent Protector With LatchOff/Auto-Retry
• Manufacturer: Linear Technology
• Series: -r

Specifications of DC1575A

• Design Resources: DC1575A Schematic DC1575 Design Files
• Main Purpose: Overvoltage/Overcurrent Protection
• Embedded: No
• Utilized Ic / Part: LTC4362-2
• Primary Attributes: -
• Secondary Attributes: -
• Kit Application Type: Power Management
• Application Sub Type: Overvoltage Protection
• Features: Demonstrates Two Protection Schemes Selected At JP2, Provides Connection For USB Protection
• Lead Free Status / Rohs Status: Not applicable / Not applicable

APPLICATIONS INFORMATION
C
and its value is largely determined by the circuit require-
ments. Using a larger C
the dV/dt at OUT, allowing time for the LTC4362 to shut
off its MOSFET before V
voltage. A larger C
to the discharge of energy in L
used as an input clamp.
OUT
is the decoupling capacitor of the protected circuit
OUT
also helps to lower the ΔV
OUT
OUT
works with L
overshoots to a dangerous
IN
Figure 9. Layout for External P-channel MOSFET Confi guration
if the MOSFET BV
SUPPLY
IN
Si1471DH
6
1
to slow down
5
2
4
3
OUT
DSS
due
is
1
2
3
4
GND
Layout Considerations
Figure 9 shows an example PCB layout for the LTC4362
with an external P-channel MOSFET for negative voltage
protection. Keep the traces to the internal N-channel
MOSFET wide and short. The PCB traces associated with
the power path through the internal N-channel MOSFET
should have low resistance.
LTC4362
9
8
7
6
5
LTC4362-1/LTC4362-2
436212 F08
OUT
11
436212fa