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Updated at 17/06/2025 10:30:15(UTC+8)
Certifications
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Description
- The LM4890 is an audio power amplifier primarily designed for demanding applications in mobile phones and other portable communication device applications. It is capable of delivering 1 watt of continuous average power to an 8Ω BTL load with less than 1% distortion (THD+N) from a 5VDC power supply.
- Boomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4890 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement.
- The LM4890 features a low-power consumption shutdown mode, which is achieved by driving the shutdown pin with logic low. Additionally, the LM4890 features an internal thermal shutdown protection mechanism.
- The LM4890 contains advanced pop & click circuitry which eliminates noises which would otherwise occur during turn-on and turn-off transitions.
- The LM4890 is unity-gain stable and can be configured by external gain-setting resistors.
- Available in Space-Saving Packages: DSBGA, VSSOP, SOIC, and WSON
- Ultra Low Current Shutdown Mode
- BTL Output Can Drive Capacitive Loads
- Improved Pop & Click Circuitry Eliminates Noises During Turn-On and Turn-Off Transitions
- 2.2 - 5.5V Operation
- No Output Coupling Capacitors, Snubber Networks or Bootstrap Capacitors Required
- Thermal Shutdown Protection
- Unity-Gain Stable
- External Gain Configuration Capability
- ## Key Specifications
- PSRR at 217Hz, VDD = 5V (Fig. 1): 62dB(typ.)
- Power Output at 5.0V & 1% THD: 1W(typ.)
- Power Output at 3.3V & 1% THD: 400mW(typ.)
- Shutdown Current: 0.1μA(typ.)
- All trademarks are the property of their respective owners.
LM4890 Specifications
| Attribute | Attribute Value |
|---|---|
| Datasheet | Datasheet |
| 3D Model | 3D Model |
| Case/Package | WSON-10 |
| Output Power | 1.2 W |
| Show | |
| RoHS | RoHS Compliant |
| Lead-Free Status | Lead Free |
Order guide
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- Please confirm with the logistics company in advance for remote areas.
(Additional charges ($35-$50) may apply for delivery in these areas)
- Delivery date: usually 2 to 7 working days.
- A tracking number will be sent after your order ships.
- - Carefully inspected and packed by ManyChip warehouse - Vacuum packaging - Anti-static packaging - Shockproof foam
- The terms here are for reference only, the actual terms are subject to the sales quotation. - Please confirm product specifications when ordering. - MOQ refers to the minimum order quantity required to purchase each part. - If you have special ordering instructions, please indicate them on the ordering page. - Inspection (PSI) will be performed prior to shipment.
- - Income Quality Control (IQC), 1000+ qualified dealers. - Chips are tested by authoritative organizations to ensure the quality, authenticity and safety of your device. - Decapsulation control - X-ray control - XRF inspection - Electrical testing - Surface testing -Digital components warehouse, covering an area of 800 square meters, with constant temperature and humidity
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If you have any problem,please email to sales@manychip.com, we will response as soon as possisble.
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