LM4871M/NOPBIn StockTexas Instruments
LM4871M/NOPB is a 3W mono Boomer audio amplifier with shutdown and click/pop suppression, SOIC-8. From $0.20 at 1510+pcs. In stock, ships globally.
- Manufacturer
- Texas Instruments
- Package
- SOIC-8
- Pin Count
- 8
- Lifecycle
- ACTIVE
- Datasheet
- LM4871M/NOPB Datasheet PDF
- Category
- amplifiers
- Price
- From $0.6510(MOQ 1)
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 3W output into 4Ω speaker at 5V supply
- Boomer technology with click/pop suppression
- Unity-gain stable with external gain setting
- Shutdown mode: 0.6µA quiescent current
- Bridge-tied load output for maximum power
Applications
Designed for portable Bluetooth speakers, toys, GPS navigation audio, alarm panels, and handheld devices requiring clear audio output from compact, battery-powered designs.
Specifications
| Pbfree Code | Yes |
| YTEOL | 15 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | AUDIO AMPLIFIER |
| Harmonic Distortion | 10% |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e3 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Output Power-Nom | 3W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 260 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 10mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | Matte Tin (Sn) |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 30 |
| ## LM4871M/NOPB Alternates Showing results | Image |
| Package | SOIC-8 |
Compliance & Regulatory
| RoHS Status | Compliant |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Alternate & Equivalent Parts
Compatible alternatives and drop-in replacements for LM4871M/NOPB:
Frequently Asked Questions
What is the maximum output power of LM4871?
The LM4871 delivers up to 3W into a 4Ω speaker at 5V supply with 10% THD+N. At 1% THD, output power is approximately 2.5W. With 8Ω speakers, maximum power is about 1.5W. Higher supply voltages (up to 5.5V) yield slightly more power.
What is Boomer technology?
Boomer is TI's brand for their line of audio power amplifiers optimized for portable applications. Key features include click/pop suppression during power transitions, low quiescent current, and bridge-tied-load (BTL) output for maximum power from single-supply operation.
How to set the gain of LM4871?
Gain is set by two external resistors: AV = 2 × (Rf/Ri). The default recommended gain is 6dB (AV=2) using equal-value 20kΩ resistors. Maximum recommended gain is 24dB. Lower gains reduce noise floor and improve THD performance.
What bypass pin does LM4871 have?
Pin 1 (BYPASS) connects to an external capacitor (typically 1µF) that sets the mid-supply reference voltage. This capacitor determines the pop-free turn-on time — larger values give quieter power-up but slower startup. 1µF provides a good balance.
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Why Buy from FindMyChip
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.
| Qty. | Unit Price | Ext. Price |
|---|---|---|
| 1+ | $2.5000 | $2.50 |
| 3+ | $1.8750 | $5.63 |
| 8+ | $0.7406 | $5.92 |
| 100000+ | $0.6510 | $65100.00 |
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