LM4899MM/NOPB Equivalent & Substitute Parts

Part Overview

The LM4899MM/NOPB is a Class AB mono audio amplifier IC manufactured by Texas Instruments, part of the Boomer® series. This device delivers 1.4W output power at 4Ω load with integrated features including depop circuitry, differential inputs, shutdown control, and thermal protection. The component operates across a 2.4V to 5.5V supply range and is housed in a 10-VSSOP surface mount package.

The LM4899MM/NOPB carries an Obsolete product status. Equivalent and substitute parts are necessary to maintain design continuity, ensure supply chain availability, and support ongoing production requirements for applications utilizing this amplifier topology.

Key Parameters

Parameter	Value
Amplifier Type	Class AB
Output Configuration	1-Channel (Mono)
Max Output Power @ 4Ω Load	1.4W
Supply Voltage Range	2.4V ~ 5.5V
Operating Temperature Range	-40°C ~ 85°C (TA)
Integrated Features	Depop, Differential Inputs, Shutdown, Thermal Protection
Mounting Type	Surface Mount
Package Type	10-VSSOP / 10-TFSOP / 10-MSOP (0.118", 3.00mm Width)
RoHS Status	ROHS3 Compliant
Moisture Sensitivity Level	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the LM4899MM/NOPB is determined by strict alignment across the following electrical and mechanical parameters:

Critical Matching Parameters:

Amplifier topology: Class AB configuration
Output channels: Single-channel (mono) operation
Output power specification: 1.4W at 4Ω load
Supply voltage compatibility: Overlapping or equivalent operating range
Integrated protection features: Depop, differential inputs, shutdown, thermal protection
Package footprint: 10-pin surface mount with compatible pinout
Operating temperature range: -40°C to 85°C
Compliance certifications: ROHS3, REACH Unaffected, EAR99

All identified substitute parts meet these criteria. Packaging format (Tube vs. Tape & Reel) and product status (Active vs. Obsolete) do not affect electrical or functional equivalence but impact procurement and supply chain considerations.

Parameter Comparison

Part Number	Manufacturer	Type	Output Power @ 4Ω	Supply Voltage	Package	Product Status	Packaging Format
LM4899MM/NOPB	Texas Instruments	Class AB Mono	1.4W	2.4V ~ 5.5V	10-VSSOP	Obsolete	Tube
LM4898MM/NOPB	Texas Instruments	Class AB Mono	1.4W	2.4V ~ 5.5V	10-VSSOP	Active	Tape & Reel
MAX9718AEUB+	Analog Devices Inc./Maxim Integrated	Class AB Mono	1.4W	2.7V ~ 5.5V	10-uMAX-EP	Active	Tube
MAX9718AEUB+T	Analog Devices Inc./Maxim Integrated	Class AB Mono	1.4W	2.7V ~ 5.5V	10-uMAX-EP	Active	Tape & Reel
MAX9718DEUB+	Analog Devices Inc./Maxim Integrated	Class AB Mono	1.4W	2.7V ~ 5.5V	10-uMAX-EP	Active	Tube
MAX9718DEUB+T	Analog Devices Inc./Maxim Integrated	Class AB Mono	1.4W	2.7V ~ 5.5V	10-uMAX-EP	Active	Tape & Reel

Engineering Selection Recommendations

Primary Recommendation: LM4898MM/NOPB

The LM4898MM/NOPB is the direct Texas Instruments equivalent with Active product status. This part maintains identical electrical specifications, supply voltage range (2.4V ~ 5.5V), output power (1.4W @ 4Ω), and integrated feature set. The primary distinction is packaging format (Tape & Reel vs. Tube) and product lifecycle status. For new designs or ongoing production requiring Texas Instruments sourcing, this part provides continuity with improved supply availability.

Secondary Recommendation: MAX9718 Series (Analog Devices Inc./Maxim Integrated)

The MAX9718AEUB+T, MAX9718AEUB+, MAX9718DEUB+T, and MAX9718DEUB+ variants from Analog Devices Inc./Maxim Integrated provide functional equivalence with the following considerations:

All MAX9718 variants maintain Class AB mono topology and 1.4W output power at 4Ω load
Supply voltage range is 2.7V ~ 5.5V (minimum supply voltage is 0.3V higher than LM4899MM/NOPB)
Package footprint is 10-uMAX-EP with exposed pad, compatible with 10-pin surface mount applications
All variants carry Active product status with robust supply chain availability
ROHS3 compliance and MSL 1 rating match the original part

Packaging Format Selection:

Tape & Reel format (LM4898MM/NOPB, MAX9718AEUB+T, MAX9718DEUB+T) is appropriate for high-volume automated assembly. Tube format (MAX9718AEUB+, MAX9718DEUB+) is suitable for lower-volume or manual assembly operations.

Compliance Verification:

All substitute parts maintain ROHS3 compliance, REACH Unaffected status, and EAR99 export classification, ensuring regulatory alignment with the original LM4899MM/NOPB specification.

Frequently Asked Questions (FAQ)

Q: Can the LM4898MM/NOPB directly replace the LM4899MM/NOPB in existing designs?

A: Yes. The LM4898MM/NOPB is electrically and functionally identical to the LM4899MM/NOPB. Both devices share the same supply voltage range (2.4V ~ 5.5V), output power specification (1.4W @ 4Ω), integrated features, and operating temperature range. The primary difference is product status (Active vs. Obsolete) and packaging format (Tape & Reel vs. Tube). No circuit modifications are required.

Q: What is the minimum supply voltage difference between the LM4899MM/NOPB and MAX9718 series?

A: The LM4899MM/NOPB operates from 2.4V minimum, while MAX9718 variants operate from 2.7V minimum. This 0.3V difference is significant only in applications with supply voltages between 2.4V and 2.7V. For designs operating above 2.7V, this difference is not a limiting factor.

Q: Are the package footprints between LM4899MM/NOPB and MAX9718 variants compatible?

A: Both use 10-pin surface mount packages with 0.118" (3.00mm) width. The LM4899MM/NOPB uses 10-VSSOP packaging, while MAX9718 variants use 10-uMAX-EP packaging with an exposed pad. PCB layout verification is required to confirm pinout compatibility and thermal pad utilization before substitution.

Q: Which substitute part offers the best supply chain availability?

A: MAX9718AEUB+T carries the highest inventory (6400 Pcs) among all listed substitutes. LM4898MM/NOPB provides 2184 Pcs availability. Both parts carry Active product status, ensuring long-term supply continuity compared to the Obsolete LM4899MM/NOPB.

Q: Do all substitute parts include the same integrated protection features?

A: Yes. All substitute parts (LM4898MM/NOPB and all MAX9718 variants) include depop circuitry, differential inputs, shutdown control, and thermal protection. Feature parity is maintained across all recommended substitutes.

Q: What is the significance of the exposed pad in MAX9718 packaging?

A: The exposed pad in 10-uMAX-EP packaging provides enhanced thermal dissipation compared to standard 10-pin packages. This improves thermal management in applications with sustained high output power. PCB design must include appropriate thermal via patterns to utilize this feature effectively.

Request Quote (Ships tomorrow)

Part Number

Quantity

Company

Contact Name

E-mail

Message