1FEATURES
2• Wide Operating Input Voltage Range: +6V to
+75V
• +100 Volt Transient Capability
• Charge Pump Gate Driver for External N-
Channel MOSFET
• MOSFET Diagnostic Test Mode
• Fast 50ns Response to Current Reversal
• 2A Peak Gate Turn-off Current
• Minimum VDS Clamp for Faster Turn-off
• Package: SOT-6 (Thin SOT23-6)

APPLICATIONS
• Active OR-ing of Redundant (N+1) Power
Supplies

DESCRIPTION
The LM5050-2 High Side OR-ing FET Controller
operates in conjunction with an external MOSFET as
an ideal diode rectifier when connected in series with
a power source. This OR-ing controller allows
MOSFETs to replace diode rectifiers in power
distribution networks thus reducing both power loss
and voltage drops.
The LM5050-2 controller provides charge pump gate
drive for an external N-Channel MOSFET and a fast
response comparator to turn off the FET when
current flows in the reverse direction. The LM5050-2
can connect power supplies ranging from +6V to
+75V and can withstand transients up to +100V.
The LM5050-2 also provides a FET test diagnostic
mode which allows the system controller to test for
shorted MOSFETs.