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MAX34565
12V Hot-Plug Switch in TDFN Package
Pin Configuration
TOP VIEW
LOAD LOAD LOAD LOAD LOAD
10
9
8
7
6
MAX34565
+
V CC /EP
1
2
3
4
5
GND VRAMP EN/
ILIM
N.C.
FAULT
TDFN
(3mm x 3mm)
Pin Description
PIN
1
2
3
4
5
6
7
8
NAME
GND
VRAMP
EN/FAULT
ILIM
N.C.
LOAD
FUNCTION
Ground Connection
Voltage Ramp Control. A capacitor connected to this pin determines the voltage ramp of the LOAD
output during turn-on according to the equation t VRAMP = 25E6 x C VRAMP for voltage ramp from 0
to 12V. This pin can be left open circuit for a minimum ramp time.
Enable/Fault. This pin is a multiple function digital input-output pin. When this pin is externally pulled
low, the MOSFET is turned off. When this pin is left open or not externally driven, the internal pullup
reference pulls the input high, and the MOSFET is allowed to turn on. Note: Do not use an
external pullup on this pin. If the device experiences a thermal fault, this pin becomes an output that
is pulled internally to a mid-level voltage, V FAULT .
Supply Current Limit Adjust. A resistor from this pin to LOAD determines the current limit for the
pass connection.
No Connection. Do not connect any signal to this pin.
Load Output. N-channel power MOSFET source connection.
9
10
12V Supply Input/Exposed Pad. Power-supply input and n-channel power MOSFET drain connec-
—
V CC /EP
tion. Should be connected to a large trace or plane. The EP also acts as a heatsink, and can
dissipate heat from the device.
5
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