LM4766TF/NOPB Texas Instruments Integrated Circuit (Transistor Outline, Vertical) In Stock
LM4766TF/NOPB is a dual-channel Class-AB audio power amplifier from Texas Instruments delivering 40 W per channel into 8 ohm loads. It operates across a 20 kHz audio bandwidth with 2 independent channels in a 15-pin TO-220 ZIP package. Designed for stereo hi-fi amplifiers and home theater systems requiring high output power with low distortion.
- Manufacturer
- Texas Instruments
- Package
- Transistor Outline, Vertical
- Pin Count
- 3
- Lifecycle
- OBSOLETE
- Datasheet
- LM4766TF/NOPB Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -20.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- Dual-channel Class-AB topology delivers up to 40 W per channel into 8 ohms for high-fidelity stereo audio reproduction
- 20 kHz full audio bandwidth with low total harmonic distortion ensures clean sound reproduction across the entire audible spectrum
- 15-pin ZIP through-hole package integrates heat sink mounting tab for straightforward thermal management in consumer audio enclosures
Applications
The LM4766TF/NOPB is designed for stereo power amplifiers, home theater receivers, and multimedia speaker systems that demand 40 W per channel of Class-AB audio performance. Its dual-channel integration in a single 15-pin ZIP package reduces board area and component count compared to building a two-channel stage from discrete transistors. The device is also suitable for powered subwoofer modules and guitar practice amplifiers where moderate output power and audio fidelity up to 20 kHz are required.
Specifications
| Pbfree Code | No |
| YTEOL | 0 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | AUDIO AMPLIFIER |
| JESD-30 Code | R-PZIP-T15 |
| JESD-609 Code | e3 |
| Number of Channels | 2 |
| Number of Functions | 1 |
| Output Power-Nom | 30W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | ZIP15,.2,.17TB |
| Package Shape | RECTANGULAR |
| Package Style | FLANGE MOUNT |
| Qualification Status | Not Qualified |
| Supply Current-Max | 100mA |
| Supply Voltage-Max (Vsup) | 60V |
| Supply Voltage-Min (Vsup) | 20V |
| Surface Mount | NO |
| Technology | BIPOLAR |
| Temperature Grade | OTHER |
| Terminal Finish | MATTE TIN |
| Terminal Form | THROUGH-HOLE |
| Terminal Pitch | 1.27mm |
| Terminal Position | ZIG-ZAG |
| Package | Transistor Outline, Vertical |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM4766TF/NOPB:
Amplifier, 40W, 2 Channel(s), 1 Func, Bipolar, PZFM15
Frequently Asked Questions
How much output power can the LM4766TF/NOPB deliver per channel into an 8 ohm speaker?
The LM4766TF/NOPB delivers up to 40 W per channel into an 8 ohm load in stereo operation. Both channels can be driven simultaneously, making it suitable for full-power stereo audio systems. The 30 W nominal rating reflects typical conditions, while the 40 W peak figure applies under specified supply voltage conditions documented in the datasheet.
What is the audio bandwidth supported by the LM4766TF/NOPB?
The device supports a 20 kHz audio bandwidth, covering the entire range of human hearing from 20 Hz to 20 kHz. This full-audio-spectrum performance with low total harmonic distortion makes the LM4766TF/NOPB suitable for high-fidelity stereo amplifiers and home theater applications where accurate sound reproduction is required.
How should thermal management be handled for the LM4766TF/NOPB at full 40 W output?
The 15-pin ZIP package includes an integrated mounting tab that allows direct attachment to an external aluminum heat sink. At 40 W per channel total dissipation, a heat sink with thermal resistance below 2 °C/W is recommended to keep the junction temperature within the safe operating range. Adequate thermal compound between the tab and heat sink significantly improves heat transfer.
When is the LM4766TF/NOPB a better choice than the single-channel LM3886 for a stereo amplifier project?
The LM4766TF/NOPB integrates 2 channels in one 15-pin ZIP package, so a complete stereo amplifier stage requires only one IC rather than two separate LM3886 devices. This reduces PCB area, inter-channel routing complexity, and BOM count while still delivering up to 40 W per channel at 8 ohms, offering a simpler design path for stereo home audio builds.
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About Texas Instruments
Texas Instruments (TI) is a global semiconductor company headquartered in Dallas, Texas. TI designs and manufactures analog and embedded processing chips used in industrial, automotive, consumer, communications, and enterprise systems.
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