LTC4225CGN-1#TRPBF Linear Technology, LTC4225CGN-1#TRPBF Datasheet - Page 7

• Manufacturer Part Number: LTC4225CGN-1#TRPBF
• Manufacturer: Linear Technology

Specifications of LTC4225CGN-1#TRPBF

• Lead Free Status / RoHS Status: Compliant

pin FuncTions
INTV
must have a 0.1µF or larger capacitor. An external load of
less than 500µA can be connected at this pin.
ON1, ON2: On Control Input. A rising edge above 1.235V
turns on the external Hot Swap MOSFET and a falling edge
below 1.155V turns it off. Connect this pin to an external
resistive divider from IN to monitor the supply undervolt-
age condition. Pulling the ON pin below 0.6V resets the
electronic circuit breaker.
OUT1, OUT2: Output Voltage Sense and MOSFET Gate
Drive Return. Connect this pin to the output side of the
external MOSFET. The voltage sensed at this pin is used
to control DGATE. The gate fast pull-down current returns
through this pin when HGATE is discharged.
PWRGD1, PWRGD2: Power Status Output. Open-drain
output that is normally pulled high by a 10µA current
source to a diode below INTV
INTV
CC
CC
: Internal 5V Supply Decoupling Output. This pin
using an external pull-up. It pulls low when the
CC
. It may be pulled above
MOSFET gate drive between HGATE and OUT exceeds
the gate-to-source voltage of 4.2V. Leave open if unused.
SENSE1, SENSE2: Negative Current Sense Input. Connect
this pin to the output of the current sense resistor. The
current limit circuit controls HGATE to limit the voltage
between IN and SENSE to 65mV. A circuit breaker trips
when the sense voltage exceeds 50mV for more than a
fault filter delay configured at the TMR pin.
TMR1, TMR2: Timer Capacitor Terminal. Connect a capaci-
tor between this pin and ground to set a 12ms/µF duration
for current limit before the external Hot Swap MOSFET
is turned off. The duration of the off time is 617ms/µF ,
resulting in a 2% duty cycle.
LTC4225-1/LTC4225-2
422512f
7