The LM25069 positive hot swap controller provides intelligent
control of the power supply voltage to the load during insertion
and removal of circuit cards from a live system backplane or
other "hot" power sources. The LM25069 provides in-rush
current control to limit system voltage droop and transients.
The current limit and power dissipation in the external series
pass N-Channel MOSFET are programmable, ensuring operation
within the Safe Operating Area (SOA). The POWER
GOOD output indicates when the output voltage is within 1.3V
of the input voltage. The input under-voltage and over-voltage
lockout levels and hysteresis are programmable, as well as
the initial insertion delay time and fault detection time. The
LM25069-1 latches off after a fault detection, while the
LM25069-2 automatically restarts at a fixed duty cycle. The
LM25069 is available in a 10 pin MSOP package.