LM5050MKX-1/NOPB

1 Features

• Available in Standard and AEC-Q100 Qualified Versions LM5050Q0MK-1 (up to 150°C TJ) and LM5050Q1MK-1 (up to 125°C TJ) • 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.

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