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Product Detailed Parameters
- Description：IC OR CTRLR N+1 8SOIC
- Series：-
- Mfr：Texas Instruments
- Package：Tape & Reel (TR),Cut Tape (CT)
- Type：N+1 ORing Controller
- FET Type：N-Channel
- Ratio - Input:Output：N:1
- Internal Switch(s)：No
- Delay Time - ON：-
- Delay Time - OFF：120 ns
- Current - Output (Max)：-
- Current - Supply：400 µA
- Voltage - Supply：36V ~ 100V
- Applications：Redundant Power Supplies
- Operating Temperature：-40°C ~ 125°C
- Mounting Type：Surface Mount
- Package / Case：8-SOIC (0.154", 3.90mm Width)
- Supplier Device Package：8-SOIC
- Grade：-
- Qualification：-
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Overview
The LM5051MAX/NOPB is a low-side OR-ing FET controller manufactured by Texas Instruments, designed for hot-swap voltage control applications. It operates within an input supply voltage range of 36 V to 100 V and supports a continuous current limit of 1 A. The device features a quiescent operating current of 690 uA and is housed in an SOIC-8 surface-mount package. It functions as a single-channel controller suitable for environments ranging from -40°C to +125°C.
Feature Summary
- Provides gate drive for external N-channel MOSFETs to enable low-side OR-ing functionality
- Integrates current limiting and thermal protection for safe hot-swap operations
- Supports high-voltage inputs up to 100 V with robust transient handling
Applications
- Server and storage backplane power distribution
- Industrial equipment redundant power systems
- Telecommunications infrastructure power modules
Procurement Notes
Verify the complete part number including the NOPB suffix to ensure lead-free compliance and specific tape-and-reel packaging options such as Cut Tape or Reel. Confirm that the SOIC-8 package variant matches the design requirements. Cross-reference the manufacturer datasheet for the latest electrical characteristics and application circuit recommendations before finalizing procurement specifications.
Selection Notes
Select this component when designing low-side OR-ing configurations requiring precise current limiting for external N-channel MOSFETs. Ensure the system input voltage remains within the 36 V to 100 V operational window. Consider the 690 uA quiescent current impact on overall efficiency. Verify that the SOIC-8 package footprint aligns with the PCB layout constraints and thermal management strategy.
Part Context
This device belongs to the LM5051 series of hot-swap voltage controllers. It complements other Texas Instruments power management ICs by providing specialized control for external switches rather than integrated solutions. The family focuses on protecting sensitive loads during insertion and removal events in high-voltage DC power systems.
Replacement Considerations
LM5051MAEVAL/NOPB is an evaluation board for this controller, not a direct functional substitute. No alternative part numbers are confirmed in the provided documentation.
