Datasheet

LTC4358
5
4358fa
PIN FUNCTIONS
DRAIN: The exposed pad is the drain of the internal
N-channel MOSFET. This pin must be connected to OUT
(Pin 9/Pin 10).
GATE: Gate Drive Output. If reverse current fl ows, a fast
pulldown circuit quickly connects the GATE pin to the IN
pin, turning off the MOSFET. Leave open if unused.
GND: Device Ground.
IN: Input Voltage and Fast Pulldown Return. IN is the
anode of the ideal diode. The voltage sensed at this pin is
used to control the source-drain voltage drop across the
internal MOSFET. If reverse current starts to fl ow, a fast
pulldown circuit quickly turns off the internal MOSFET. The
fast pulldown current is returned through this pin.
NC: No Connection. Not internally connected.
OUT: Output Voltage. The OUT pin is the cathode of the ideal
diode and the common output when multiple LTC4358s
are confi gured as an ideal diode-OR. The voltage sensed
at this pin is used to control the source-drain voltage drop
across the MOSFET. Connect this pin to the drain of the
internal N-channel MOSFET (Pin 15/Pin 17).
V
DD
: Positive Supply Input. The LTC4358 is powered from
the V
DD
pin. Connect this pin to OUT either directly or
through an RC hold-up circuit.
(DE/FE PACKAGES)
4358 BD
CHARGE PUMP
–
+
–
+
+
–
FPD
COMP
GATE
AMP
25mV25mV
IN
OUT
DRAIN GATE
GND
IN
V
DD
+
–
BLOCK DIAGRAM