LM5050-2 High Side OR-ing FET Controller | TI.com

LM5050-2 (ACTIVE) High Side OR-ing FET Controller

High Side OR-ing FET Controller - LM5050-2
Datasheet
 

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.

Features

  • 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)

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Parametrics

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Part number Order Vin (Min) (V) Vabsmin (Min) (V) Vin (Max) (V) Vabsmax (Max) (V) Iq (Typ) (mA) Iq (Max) (mA) FET IGate source (Typ) (uA) IGate source (Max) (uA) IGate sink (Typ) (mA) IGate pulsed (Typ) (A) Features Operating temperature range (C) Package Group Approx. price (US$) IReverse (Typ) (uA) VSense reverse (Typ) (mV) Design support Rating Package size: mm2:W x L (PKG) Channel(s) controlled (#) VGS (Max) (V)
LM5050-2 Order now 6     -0.3     75     100     0.4     0.72     External     32     45     2.8     2.8     FET Test
Linear Control    
-40 to 125     SOT-23-THIN | 6     0.87 | 1ku         -28 /-41     EVM
Reference Design
Simulation Model    
Catalog     6SOT-23-THIN: 8 mm2: 2.8 x 2.9 (SOT-23-THIN | 6)     1     14.7    
LM5050-1 Order now 5     -0.3     75     100     0.4     0.72     External     31     41     2.8     2.8     AUX Input
Linear Control    
-40 to 125     SOT-23-THIN | 6     0.87 | 1ku         -28 /-41     EVM
Simulation Model    
Catalog     6SOT-23-THIN: 8 mm2: 2.8 x 2.9 (SOT-23-THIN | 6)     1     14