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LM4892MM/NOPB Equivalent & Substitute Parts
Part Overview
The LM4892MM/NOPB is a Class AB mono audio amplifier IC manufactured by Texas Instruments, part of the Boomer® series. This device delivers 1W output power at 8Ω load in a single-channel (mono) configuration with integrated depop, shutdown, and thermal protection features. The component is housed in an 8-VSSOP surface mount package and operates across a 2.2V to 5.5V supply voltage range.
The LM4892MM/NOPB has reached obsolete product status. Identifying equivalent substitute parts is necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this amplifier topology.
Substiute Parts
Key Parameters
| Parameter | Value |
|---|---|
| Manufacturer | Texas Instruments |
| Category | Linear, Amplifiers |
| Series | Boomer® |
| Type | Class AB |
| Output Configuration | 1-Channel (Mono) |
| Max Output Power @ 8Ω | 1W |
| Max Output Power @ 32Ω | 90mW |
| Supply Voltage Range | 2.2V ~ 5.5V |
| Integrated Features | Depop, Shutdown, Thermal Protection |
| Package Type | 8-VSSOP (8-TSSOP, 8-MSOP) |
| Mounting Type | Surface Mount |
| Operating Temperature Range | -40°C ~ 85°C (TA) |
| RoHS Status | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) |
Substitute Part Grouping Explanation
Substitution eligibility for the LM4892MM/NOPB is determined by strict alignment across the following critical parameters:
Electrical Compatibility Requirements:
- Class AB amplifier topology
- 1-Channel (Mono) output configuration
- 1W output power capability at 8Ω load
- Supply voltage range: 2.2V ~ 5.5V
- Integrated protection features: Depop, Shutdown, Thermal Protection
Mechanical & Package Compatibility:
- 8-VSSOP package footprint (8-TSSOP, 8-MSOP 0.118", 3.00mm Width)
- Surface mount mounting type
Compliance & Regulatory:
- ROHS3 Compliant
- Moisture Sensitivity Level 1 (Unlimited)
- REACH Unaffected status
The LM4890MMX/NOPB meets all substitution criteria. While the LM4892MM/NOPB is obsolete, the LM4890MMX/NOPB maintains identical electrical specifications, package geometry, and regulatory compliance, with the distinction of active product status and tape & reel packaging availability.
Parameter Comparison
| Parameter | LM4892MM/NOPB (Main Part) | LM4890MMX/NOPB (Substitute) |
|---|---|---|
| Manufacturer | Texas Instruments | Texas Instruments |
| Series | Boomer® | Boomer® |
| Product Status | Obsolete | Active |
| Type | Class AB | Class AB |
| Output Configuration | 1-Channel (Mono) with Mono Headphones | 1-Channel (Mono) |
| Max Output Power @ 8Ω | 1W | 1W |
| Supply Voltage Range | 2.2V ~ 5.5V | 2.2V ~ 5.5V |
| Integrated Features | Depop, Shutdown, Thermal Protection | Depop, Shutdown, Thermal Protection |
| Package Type | 8-VSSOP | 8-VSSOP |
| Mounting Type | Surface Mount | Surface Mount |
| Operating Temperature | -40°C ~ 85°C (TA) | -40°C ~ 85°C (TA) |
| RoHS Status | ROHS3 Compliant | ROHS3 Compliant |
| Moisture Sensitivity Level | 1 (Unlimited) | 1 (Unlimited) |
| Packaging Format | Tube | Tape & Reel (TR) |
| Inventory Status | 1907 Pcs New Original In Stock | 19100 Pcs New Original In Stock |
Engineering Selection Recommendations
The LM4890MMX/NOPB is a direct electrical and mechanical substitute for the LM4892MM/NOPB. Both components share identical Class AB amplifier specifications, output power ratings, supply voltage parameters, and integrated protection features. The package footprint and thermal characteristics remain unchanged between the two parts.
The primary distinction is product lifecycle status: the LM4892MM/NOPB is obsolete, while the LM4890MMX/NOPB maintains active product status with significantly higher inventory availability (19100 units versus 1907 units). Both parts carry ROHS3 compliance and identical regulatory certifications (REACH Unaffected, EAR99 ECCN classification).
For new designs or production continuity, the LM4890MMX/NOPB is the appropriate selection. The tape & reel packaging format of the LM4890MMX/NOPB supports automated assembly processes, whereas the LM4892MM/NOPB tube packaging may require manual handling.
Frequently Asked Questions (FAQ)
Q: Can the LM4890MMX/NOPB be used as a direct replacement for the LM4892MM/NOPB in existing PCB designs?
A: Yes. Both components share identical 8-VSSOP package geometry, pin configuration, and electrical specifications. No PCB layout modifications are required. The LM4890MMX/NOPB can be substituted without design changes.
Q: What is the difference between the LM4892MM/NOPB and LM4890MMX/NOPB?
A: The electrical and mechanical specifications are identical. The differences are: (1) Product status—LM4892MM/NOPB is obsolete; LM4890MMX/NOPB is active; (2) Packaging format—LM4892MM/NOPB is supplied in tubes; LM4890MMX/NOPB is supplied in tape & reel format; (3) Inventory availability—LM4890MMX/NOPB has substantially higher stock levels.
Q: Are the pin assignments identical between these two parts?
A: Yes. Both the LM4892MM/NOPB and LM4890MMX/NOPB use the 8-VSSOP package with identical pin assignments and electrical characteristics.
Q: Does the tape & reel packaging of the LM4890MMX/NOPB affect performance?
A: No. Packaging format does not affect electrical performance or functional characteristics. Tape & reel packaging is optimized for automated pick-and-place assembly processes.
Q: Are both parts RoHS compliant?
A: Yes. Both the LM4892MM/NOPB and LM4890MMX/NOPB are ROHS3 compliant with Moisture Sensitivity Level 1 (Unlimited) and REACH Unaffected status.
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