LM5110-1SDX Equivalent & Substitute Parts

Part Overview

The LM5110-1SDX is a low-side gate driver IC manufactured by Texas Instruments, designed for driving N-Channel MOSFETs in power management applications. This device features independent dual-channel configuration with non-inverting logic input, operating across a 4.6V to 14V supply range. The part is classified as obsolete, which necessitates identification of active equivalent alternatives to ensure design continuity and procurement availability for new production runs and system maintenance.

Key Parameters

Parameter	Value
Driven Configuration	Low-Side
Channel Type	Independent
Number of Drivers	2
Gate Type	N-Channel MOSFET
Voltage - Supply	4.6V ~ 14V
Logic Voltage - VIL, VIH	0.8V, 2.2V
Current - Peak Output (Source, Sink)	3A, 5A
Input Type	Non-Inverting
Rise / Fall Time (Typ)	14ns, 12ns
Operating Temperature	-40°C ~ 125°C (TJ)
Package / Case	10-WDFN Exposed Pad
Supplier Device Package	10-WSON (4x4)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitution eligibility for the LM5110-1SDX is determined by strict equivalence across the following critical parameters:

Driven Configuration: Low-Side operation only
Channel Type: Independent dual-channel architecture
Number of Drivers: Exactly 2 channels
Gate Type: N-Channel MOSFET and IGBT compatibility
Supply Voltage Range: 4.6V ~ 14V
Logic Voltage Thresholds: VIL = 0.8V, VIH = 2.2V
Peak Output Current: Source 3A, Sink 5A
Input Logic: Non-Inverting configuration
Switching Performance: Rise/Fall times of 14ns/12ns
Temperature Range: -40°C to 125°C junction temperature
Package Footprint: 10-WDFN Exposed Pad (10-WSON 4x4 physical dimensions)
Mounting: Surface Mount technology

The LM5110-1SDX/NOPB qualifies as a direct substitute based on identical electrical specifications and mechanical compatibility across all parameters listed above.

Parameter Comparison

Parameter	LM5110-1SDX	LM5110-1SDX/NOPB
Manufacturer	Texas Instruments	Texas Instruments
Driven Configuration	Low-Side	Low-Side
Channel Type	Independent	Independent
Number of Drivers	2	2
Gate Type	N-Channel MOSFET	IGBT, N-Channel MOSFET
Voltage - Supply	4.6V ~ 14V	4.6V ~ 14V
Logic Voltage - VIL, VIH	0.8V, 2.2V	0.8V, 2.2V
Current - Peak Output (Source, Sink)	3A, 5A	3A, 5A
Input Type	Non-Inverting	Non-Inverting
Rise / Fall Time (Typ)	14ns, 12ns	14ns, 12ns
Operating Temperature	-40°C ~ 125°C (TJ)	-40°C ~ 125°C (TJ)
Package / Case	10-WDFN Exposed Pad	10-WDFN Exposed Pad
Supplier Device Package	10-WSON (4x4)	10-WSON (4x4)
Mounting Type	Surface Mount	Surface Mount
Product Status	Obsolete	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant
Packaging Format	Bulk	Tape & Reel (TR)

Engineering Selection Recommendations

The LM5110-1SDX/NOPB is the direct functional equivalent for applications currently using the LM5110-1SDX. Selection of the substitute part is based on the following engineering criteria:

Product Status: The original LM5110-1SDX is classified as obsolete, making the active LM5110-1SDX/NOPB the appropriate choice for new designs and ongoing production requirements.

Regulatory Compliance: The LM5110-1SDX/NOPB achieves ROHS3 compliance, whereas the original part is RoHS non-compliant. This distinction is critical for applications subject to environmental regulations and customer compliance requirements.

Electrical Equivalence: All electrical parameters—supply voltage, logic thresholds, output current ratings, switching times, and temperature range—are identical between the two parts, ensuring drop-in compatibility at the circuit level.

Packaging and Delivery: The LM5110-1SDX/NOPB is supplied in Tape & Reel format, standard for automated assembly processes, compared to bulk packaging of the original part. Both maintain identical 10-WSON (4x4) footprints and surface-mount compatibility.

Gate Type Expansion: The substitute part supports both IGBT and N-Channel MOSFET gate driving, providing broader application flexibility while maintaining full backward compatibility with existing N-Channel MOSFET designs.

Frequently Asked Questions (FAQ)

Q: Can the LM5110-1SDX/NOPB be used as a direct replacement for the LM5110-1SDX in existing designs?

A: Yes. The LM5110-1SDX/NOPB is electrically and mechanically equivalent across all specified parameters. No circuit modifications are required for substitution.

Q: What is the primary reason for substituting the LM5110-1SDX?

A: The original LM5110-1SDX is obsolete. The LM5110-1SDX/NOPB is the active equivalent from Texas Instruments, ensuring long-term availability and supply chain continuity.

Q: Are there any differences in package footprint between these parts?

A: No. Both parts use the 10-WDFN Exposed Pad package with 10-WSON (4x4) physical dimensions. PCB layouts and assembly processes remain unchanged.

Q: Does the RoHS compliance difference affect circuit performance?

A: No. RoHS compliance is a material composition and environmental standard, not a functional specification. Electrical performance is identical between the two parts.

Q: Can the LM5110-1SDX/NOPB drive IGBT gates in addition to MOSFETs?

A: Yes. The substitute part is rated for both IGBT and N-Channel MOSFET gate driving, providing expanded application capability while maintaining full compatibility with existing MOSFET designs.

Q: What is the difference between bulk and Tape & Reel packaging?

A: Tape & Reel (TR) packaging is standard for automated pick-and-place assembly in production environments. Bulk packaging is typically used for manual assembly or lower-volume applications. Electrical specifications are identical.

Q: Are the logic voltage thresholds identical between both parts?

A: Yes. Both parts maintain VIL = 0.8V and VIH = 2.2V, ensuring compatible signal interpretation across all input conditions.

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