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LM5111-4M/NOPB Equivalent & Substitute Parts
Part Overview
The LM5111-4M/NOPB is a low-side gate driver IC manufactured by Texas Instruments, designed for independent dual-channel N-Channel MOSFET switching applications. This device operates across a 4.6V to 14V supply range with inverting and non-inverting input configurations. The part is currently in Last Time Buy status, indicating end-of-life production. Identifying qualified substitute components ensures design continuity and supply chain reliability for new production runs and long-term system support.
Substiute Parts
Key Parameters
| Parameter | LM5111-4M/NOPB |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Power Management (PMIC) |
| Driven Configuration | Low-Side |
| Number of Drivers | 2 |
| Gate Type | N-Channel MOSFET |
| Voltage - Supply | 4.6V ~ 14V |
| Current - Peak Output (Source, Sink) | 3A, 5A |
| Input Type | Inverting, Non-Inverting |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) |
| Operating Temperature | -40°C ~ 125°C (TJ) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the LM5111-4M/NOPB is determined by the following mandatory parameters:
Core Compatibility Criteria:
- Driven Configuration: Low-Side (all substitutes must match)
- Number of Drivers: 2 (all substitutes must match)
- Package / Case: 8-SOIC form factor (all substitutes must match)
- Mounting Type: Surface Mount (all substitutes must match)
- Input Type: Support for Inverting, Non-Inverting configurations (all substitutes must support both or the required mode)
Electrical Operating Range:
- Supply Voltage: Substitute range must encompass or exceed 4.6V ~ 14V
- Peak Output Current: Substitute must meet or exceed 3A source and 5A sink capability
- Operating Temperature: Substitute must support -40°C ~ 125°C minimum
Compliance & Certification:
- RoHS3 Compliant (all substitutes must match)
- MSL rating of 1 or lower (unlimited moisture sensitivity)
Substitutes are grouped into two categories: direct replacements from Texas Instruments (UCC series) and cross-manufacturer alternatives (Microchip Technology MCP and MIC series). All listed substitutes meet the core compatibility criteria and electrical requirements.
Parameter Comparison
| Parameter | LM5111-4M/NOPB | UCC27425DR | UCC27524AD | UCC27525DR | MCP1405-E/SN | MCP1405T-E/SN | MIC4125YME | MIC4125YME-TR | MIC4128YME | MIC4128YME-TR | MIC4425YM |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology | Microchip Technology |
| Driven Configuration | Low-Side | Low-Side | Low-Side | Low-Side | Low-Side | Low-Side | Low-Side | Low-Side | Low-Side | Low-Side | Low-Side |
| Number of Drivers | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 | 2 |
| Gate Type | N-Channel MOSFET | N-Channel, P-Channel MOSFET | IGBT, N-Channel MOSFET | IGBT, N-Channel MOSFET | IGBT, N-Channel, P-Channel MOSFET | IGBT, N-Channel, P-Channel MOSFET | N-Channel, P-Channel MOSFET | N-Channel, P-Channel MOSFET | N-Channel MOSFET | N-Channel MOSFET | N-Channel, P-Channel MOSFET |
| Voltage - Supply | 4.6V ~ 14V | 4V ~ 15V | 4.5V ~ 18V | 4.5V ~ 18V | 4.5V ~ 18V | 4.5V ~ 18V | 4.5V ~ 20V | 4.5V ~ 20V | 4.5V ~ 20V | 4.5V ~ 20V | 4.5V ~ 18V |
| Logic Voltage - VIL, VIH | 0.8V, 2.2V | 1V, 2V | 1V, 2.3V | 1V, 2.3V | 0.8V, 2.4V | 0.8V, 2.4V | 0.8V, 2.4V | 0.8V, 2.4V | 0.8V, 2.4V | 0.8V, 2.4V | 0.8V, 2.4V |
| Current - Peak Output (Source, Sink) | 3A, 5A | 4A, 4A | 5A, 5A | 5A, 5A | 4.5A, 4.5A | 4.5A, 4.5A | 3A, 3A | 3A, 3A | 1.5A, 1.5A | 1.5A, 1.5A | 3A, 3A |
| Input Type | Inverting, Non-Inverting | Inverting, Non-Inverting | Non-Inverting | Inverting, Non-Inverting | Inverting, Non-Inverting | Inverting, Non-Inverting | Inverting, Non-Inverting | Inverting, Non-Inverting | Inverting, Non-Inverting | Inverting, Non-Inverting | Inverting, Non-Inverting |
| Rise / Fall Time (Typ) | 14ns, 12ns | 20ns, 15ns | 7ns, 6ns | 7ns, 6ns | 15ns, 18ns | 15ns, 18ns | 11ns, 11ns | 11ns, 11ns | 20ns, 18ns | 20ns, 18ns | 28ns, 32ns |
| Operating Temperature | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TA) | -40°C ~ 140°C (TJ) | -40°C ~ 140°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 150°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 125°C (TJ) | -40°C ~ 150°C (TJ) |
| Package / Case | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) | 8-SOIC (0.154", 3.90mm Width) Exposed Pad | 8-SOIC (0.154", 3.90mm Width) Exposed Pad | 8-SOIC (0.154", 3.90mm Width) Exposed Pad | 8-SOIC (0.154", 3.90mm Width) Exposed Pad | 8-SOIC (0.154", 3.90mm Width) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level (MSL) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 1 (Unlimited) | 2 (1 Year) | 3 (168 Hours) | 2 (1 Year) | 3 (168 Hours) | 1 (Unlimited) |
Engineering Selection Recommendations
Texas Instruments UCC Series (Direct Manufacturer Alternatives)
UCC27425DR and UCC27525DR are active production alternatives from Texas Instruments. Both support dual inverting and non-inverting inputs and maintain the 8-SOIC package footprint. UCC27425DR operates at 4V ~ 15V with 4A symmetric output current, while UCC27525DR extends to 4.5V ~ 18V with 5A symmetric output current and faster switching times (7ns rise/fall). UCC27524AD is limited to non-inverting input configuration and is suitable only for applications not requiring inverting mode.
Microchip Technology MCP Series (Extended Temperature Range)
MCP1405-E/SN and MCP1405T-E/SN provide extended operating temperature to 150°C with 4.5A symmetric output current across 4.5V ~ 18V supply range. Both support dual input configurations. The primary difference is packaging: MCP1405-E/SN ships in tube format, while MCP1405T-E/SN uses tape and reel. These parts are suitable for applications requiring higher temperature operation than the original LM5111-4M/NOPB.
Microchip Technology MIC Series (Exposed Pad Variants)
MIC4125YME and MIC4125YME-TR feature exposed pad 8-SOIC packaging with 3A symmetric output current across 4.5V ~ 20V supply. MIC4128YME and MIC4128YME-TR provide reduced output current (1.5A symmetric) and are suitable only for lower-power gate drive applications. MIC4425YM operates to 150°C with 3A symmetric output but exhibits slower switching times (28ns/32ns rise/fall).
Product Status Considerations
All substitute parts listed are in Active production status, ensuring long-term availability and supply chain stability. The original LM5111-4M/NOPB is Last Time Buy, making transition to an active substitute necessary for designs requiring extended production support.
Frequently Asked Questions (FAQ)
Q: Can UCC27524AD replace LM5111-4M/NOPB directly?
A: UCC27524AD is not a direct replacement. It supports only non-inverting input configuration, while LM5111-4M/NOPB requires both inverting and non-inverting modes. Use UCC27425DR or UCC27525DR for full functional compatibility.
Q: What is the difference between MCP1405-E/SN and MCP1405T-E/SN?
A: Both parts are electrically identical. MCP1405-E/SN is supplied in tube packaging, while MCP1405T-E/SN uses tape and reel. Select based on assembly process requirements.
Q: Are MIC4125YME and MIC4125YME-TR interchangeable?
A: Both parts are electrically identical with identical 8-SOIC-EP package footprints. MIC4125YME ships in tube format; MIC4125YME-TR uses tape and reel. Moisture sensitivity differs: MSL 2 (1 Year) versus MSL 3 (168 Hours). Select based on storage and assembly timeline requirements.
Q: Why do some substitutes have higher supply voltage ratings?
A: Extended supply voltage ratings (up to 20V) provide design flexibility for applications with higher bus voltages. The LM5111-4M/NOPB operates safely within 4.6V ~ 14V; substitutes with higher ratings remain compatible in this range.
Q: Can MIC4128YME replace LM5111-4M/NOPB?
A: MIC4128YME is not recommended. Peak output current is limited to 1.5A symmetric, significantly below the LM5111-4M/NOPB specification of 3A source and 5A sink. Use only for applications with reduced gate drive current requirements.
Q: What is the significance of the exposed pad in MIC series parts?
A: The exposed pad (8-SOIC-EP) provides improved thermal dissipation compared to standard 8-SOIC packages. This is beneficial for high-frequency switching applications but requires PCB design accommodation for the pad connection.
Q: Are all substitutes RoHS3 compliant?
A: Yes. All listed substitute parts are RoHS3 compliant, matching the original LM5111-4M/NOPB compliance status.
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