1 Features
1• Available in Standard and AEC-Q100 Qualified
Versions LM5050Q0MK-1 (up to 150°C TJ) and
LM5050Q1MK-1 (up to 125°C TJ)
• Functional safety capable
– Documentation available to aid functional
safety system design
• Wide Operating Input Voltage Range, VIN: 1 V to
75 V (VBIAS required for VIN < 5 V)
• 100-V Transient Capability
• Charge Pump Gate Driver for External N-Channel
MOSFET
• Fast 50-ns Response to Current Reversal
• 2-A Peak Gate Turnoff Current
• Minimum VDS Clamp for Faster Turnoff
• Package: SOT-6 (Thin SOT-23-6)

2 Applications
Active OR-ing of Redundant (N+1) Power
Supplies

3 Description
The LM5050-1/-Q1 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 ORing controller allows
MOSFETs to replace diode rectifiers in power
distribution networks thus reducing both power loss
and voltage drops.
The LM5050-1/-Q1 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 LM5050-1/-
Q1 can connect power supplies ranging from 5 V to
75 V and can withstand transients up to 100 V.