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LM5051

The Texas Instruments LM5051 is a low-side OR-ing FET controller designed to work with an external N-channel MOSFET. It functions as an ideal diode rectifier, reducing power loss and voltage drops in power distribution networks.

✓ Total Stock: 27,815 pcs

$ Price Range: $0.95

LM5051 Available from 1 distributor

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Distributor		Stock	Pricing	MOQ	PKG	Lead Time	Date Code	On Order Quantity	On Order Delivery
Romaks Technologies ✓ Non-Authorised Inventory information	27,815 pcs On Request	27815 pcs	On Request	1	On Request	On Request	On Request	On Request	On Request

LM5051 Specifications Quick View

Most important parameters for selection – full specs in datasheet.

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Category	New Products
Manufacturer Name	Texas Instruments
Number of Pins	8
Operating Temperature	-40 to 125 °C
Response Time	50 ns
SVHC Present	Not Present

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LM5051 Description

Short technical summary and product information.

The LM5051 from Texas Instruments is a low-side OR-ing FET controller that enables the use of external N-channel MOSFETs as ideal diode rectifiers. This configuration significantly reduces power loss and voltage drops compared to traditional diode rectifiers in power distribution systems.

The controller operates over a wide input voltage range of -6V to -100V and can withstand transients up to -100V. It provides a fast 50ns response time to current reversal, ensuring efficient operation. The LM5051 also features a gate drive for the external MOSFET and a peak gate turn-off current of 2A.

Key electrical specifications include a typical quiescent current of 0.69mA and a maximum shutdown current of 0.1mA. The device supports a MOSFET diagnostic test mode, allowing system controllers to test for shorted MOSFETs. The operating temperature range is from -40°C to 125°C.

Packaged in an 8-lead SOIC, the LM5051 is suitable for applications requiring active OR-ing of redundant power supplies. Its design facilitates improved power efficiency and reliability in various power management systems.

LM5051 Quick Information

Product Type: ORing FET Controller

Canonical Name: LM5051 Low Side OR-ing FET Controller

Subcategory: Ideal Diodes

LM5051 Compliance

RoHS Status: RoHS Compliant

Moisture Sensitivity Level (MSL): 1 Unlimited

REACH Status: REACH Unaffected

LM5051 Estimated Pricing

Qty	Low	High
1+	$0.95	$0.95

Estimated market price range - modelled values for guidance only, not live distributor offers.

LM5051 Features

Wide -6V to -100V input voltage range.
Fast 50ns response to current reversal.
2A peak gate turn-off current.
MOSFET diagnostic test mode included.
8-lead SOIC package for easy integration.

LM5051 Applications

Active OR-ing of redundant power supplies.
Ideal diode replacement in power systems.
Reduces power loss and voltage drops.
Suitable for -48V power distribution.
Enhances power supply reliability.

LM5051 FAQs

6 frequently asked questions generated from this part’s specifications.

What is the input voltage range of the LM5051?

The LM5051 operates with input voltages from -6 V to 100 V, and can withstand transient voltages down to -100 V.

How fast does the LM5051 respond to a current reversal?

The LM5051 responds to a current reversal within 50 ns (maximum).

What is the quiescent current of the LM5051?

Typical quiescent current is 0.69 mA, with a maximum of 0.78 mA.

What is the gate drive current capability?

Peak gate turn-off current is 2 A. Typical gate source current is 660 µA, gate sink current is 3.5 mA, and pulsed gate current is 3.5 A.

What is the operating temperature range?

The LM5051 is rated for operation from -40°C to 125°C.

What package is the LM5051 available in?

The LM5051 comes in an SOIC-8 package measuring 6 mm x 4.9 mm.