LM4889MA Texas Instruments Integrated Circuit (Other) In Stock
LM4889MA is a 1 W mono audio power amplifier IC from Texas Instruments designed for portable consumer electronics. Delivers up to 1 W output into 8 Ω with 20 kHz bandwidth and 2% THD at 5 V supply. Housed in a compact 8-pin MSOP package for space-constrained audio designs.
- Manufacturer
- Texas Instruments
- Package
- Other
- Pin Count
- 8
- Lifecycle
- OBSOLETE
- Datasheet
- LM4889MA Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- -40.0°C to 85.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
What are the key features of LM4889MA?
- 1 W output power into 8 Ω load at 5 V supply voltage with only 2% total harmonic distortion
- 20 kHz audio bandwidth with internal gain setting, requiring minimal external components for a complete amplifier
- Shutdown mode reduces supply current to under 1 µA, extending battery life in portable devices
- Differential input architecture rejects common-mode noise and eliminates large DC-blocking input capacitors
- Compact 8-pin MSOP package enabling dense PCB layouts for handheld and wearable audio products
What is LM4889MA used for?
The LM4889MA is optimized for portable consumer electronics including mobile phones, MP3 players, and handheld gaming consoles that require up to 1 W of audio output from a compact single-supply amplifier. Its ultra-low shutdown current below 1 µA makes it ideal for battery-powered devices where minimizing idle power consumption is critical. The device also fits small speaker driver applications in smart home gadgets, toys, and alarm systems operating from a 2.7 V to 5.5 V supply rail.
What are the specifications of LM4889MA?
| Pbfree Code | No |
| YTEOL | 0 |
| Bandwidth-Nom | 20kHz |
| Consumer IC Type | AUDIO AMPLIFIER |
| Harmonic Distortion | 2% |
| JESD-30 Code | R-PDSO-G8 |
| JESD-609 Code | e0 |
| Number of Channels | 1 |
| Number of Functions | 1 |
| Output Power-Nom | 1W |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SOP8,.25 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE |
| Peak Reflow Temperature (Cel) | 235 |
| Qualification Status | Not Qualified |
| Supply Current-Max | 8mA |
| Supply Voltage-Max (Vsup) | 5.5V |
| Supply Voltage-Min (Vsup) | 2.2V |
| Surface Mount | YES |
| Temperature Grade | INDUSTRIAL |
| Terminal Finish | TIN LEAD |
| Terminal Form | GULL WING |
| Terminal Pitch | 1.27mm |
| Terminal Position | DUAL |
| Time@Peak Reflow Temperature-Max (s) | 20 |
| Package | Other |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| ECCN | EAR99 |
| HTS Code | 8542.33.00.01 |
Where can I find the LM4889MA datasheet?
LM4889MA Datasheet DownloadOfficial datasheet from Texas Instruments
What are equivalent replacements for LM4889MA?
Compatible alternatives and drop-in replacements for LM4889MA:
Frequently Asked Questions
What is the maximum output power of the LM4889MA and into which load impedance?
The LM4889MA delivers a maximum output power of 1 W into an 8 Ω speaker load when powered from a 5 V supply. Total harmonic distortion at this power level is 2%, providing acceptable audio quality for mobile phone speakers, portable radios, and handheld consumer devices.
How does the LM4889MA shutdown mode help in battery-powered portable designs?
When the shutdown pin is asserted, the LM4889MA reduces supply current to below 1 µA, virtually eliminating standby power drain. This feature is critical for battery-operated products such as MP3 players and smartphones where every microwatt saved extends runtime, and enables fast wake-up from a 2.7 V to 5.5 V supply rail.
Does the LM4889MA require a large coupling capacitor on the audio output?
No, the LM4889MA uses a BTL (bridge-tied load) output topology that centers the output at mid-supply, eliminating the need for a large electrolytic output coupling capacitor. This reduces the BOM cost and board space compared to single-ended amplifiers that require 100 µF or larger coupling capacitors for low-frequency bass reproduction.
What package does the LM4889MA use and how does it compare to a SOIC-8 in board area?
The LM4889MA is housed in an 8-pin MSOP package with a footprint of approximately 3.0 mm × 3.0 mm, which is roughly 50% smaller than a standard SOIC-8 at 6.0 mm × 5.0 mm. This size advantage is important for compact PCBs in wearable audio devices and earphone amplifier modules where space is limited.
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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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