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LA4557
Audio Amplifier, 2.4W, 2 Channel(s), 1 Func, Bipolar, PDIP12, DIP-12
LA4557
Audio Amplifier, 2.4W, 2 Channel(s), 1 Func, Bipolar, PDIP12, DIP-12
Quality Assurance
Quality Assurance
All parts procured from our supply chain network undergo a rigorous incoming inspection process. This meticulous inspection ensures that the parts received by our customers are authentic and meet the required standards. Additionally, we maintain detailed records of these inspections to ensure transparency and traceability throughout the supply chain.
Certification
We have successfully obtained various certification standards and have established our own professional testing laboratory. This ensures that every product we supply to our customers meets the highest quality standards. We adhere to strict testing protocols to maintain the consistency and accuracy of our products. To ensure that our products are original and genuine, we also collaborate with reputable third-party testing facilities to conduct rigorous quality testing. Our commitment to quality extends to meeting industry, legal, regulatory, and ISO 9001:2015 requirements.
Shipping & Payment
Shipping & Payment
About Shipping
We generally ship orders within a few business days through reliable shipping carriers such as FedEx, SF, UPS, or DHL. We also have support for other shipping methods. If you would like to inquire about specific shipping details or costs, please don't hesitate to reach out to us.
About Payment
We accept various payment methods, including VISA, MasterCard, UnionPay, Western Union, PayPal, and other channels.
If you have a specific payment method in mind or would like to inquire about rates and other details, please feel free to contact us.
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Service & Packaging
Service & Packaging
About After Sales Service
All Parts Extended Quality Guarantee
Initiate the application within 90 days from the shipment date.
Confirm the return or exchange with our staff.
Maintain the goods in their original condition as received.
Lastly, please note that the eligibility for return or exchange of goods is subject to an assessment of the actual condition of the returned items. We will evaluate the received goods before finalizing the return or exchange process. If you have any inquiries or require further assistance regarding returns or exchanges, please don't hesitate to contact us at [email protected]
About packaging
Regarding packaging, our products are carefully packed in anti-static bags to provide ESD anti-static protection. The outer packaging is durable with secure closure. We support various packaging methods such as Tape and Reel, Cut Tape, Tube, or Tray.
Example
Tape and Reel
Cut Tape
Tube or Tray
LA4557 DataSheet
Current price plan is under preparation. Please contact our customer service team for the latest pricing information. Thank you for your understanding and support!
Details
2-Channel AF Power Amp for Radio, Tape Recorder Use Features●Low qulescent current●On-chip 2 channels permitting use 1n stereo and bridge amplifler applications.●High output●Minimum number of external parts required (9 pcs. minimum)●Good r1pple re jection ( 55dB)●Soft tone at the output sa turation mode●Good channel separat ion●Easy thermal design●Small pop noise at the time of power supply ON/ 0FF●On-chip muting
Key Features
- Low qulescent currentOn-chip 2 channels permitting use 1n stereo and bridge amplifler applications.High outputMinimum number of external parts required (9 pcs. minimum)Good r1pple re jection ( 55dB)Soft tone at the output sa turation modeGood channel separat ionEasy thermal designSmall pop noise at the time of power supply ON/ 0FFOn-chip muting
Specifications
The followings are basic parameters of the part selected concerning the characteristics of the part and categories it belongs to.
| Rohs Code | No | Part Life Cycle Code | Obsolete |
| Part Package Code | DIP | Pin Count ! | 12 |
| Reach Compliance Code | ECCN Code | EAR99 | |
| HTS Code ! | 8542.33.00.01 | Consumer IC Type | AUDIO AMPLIFIER |
| Gain | 50 dB | Harmonic Distortion | 10% |
| JESD-30 Code | R-PDIP-T12 | JESD-609 Code | e0 |
| Length | 19.4 mm | Number of Channels | 2 |
| Number of Functions | 1 | Number of Terminals | 12 |
| Operating Temperature-Max | 75 °C | Operating Temperature-Min | -20 °C |
| Output Power-Nom | 2.4 W | Package Body Material | PLASTIC/EPOXY |
| Package Code | HDIP | Package Equivalence Code | HDIP16,.3 |
| Package Shape | RECTANGULAR | Package Style | IN-LINE, HEAT SINK/SLUG |
| Qualification Status ! | Not Qualified | Seated Height-Max | 4.26 mm |
| Supply Current-Max | 40 mA | Supply Voltage-Max (Vsup) | 12 V |
| Supply Voltage-Min (Vsup) | 4.5 V | Surface Mount ! | NO |
| Technology | BIPOLAR | Temperature Grade ! | COMMERCIAL EXTENDED |
| Terminal Finish | TIN LEAD | Terminal Form ! | THROUGH-HOLE |
| Terminal Pitch ! | 2.54 mm | Terminal Position | DUAL |
| Width | 7.62 mm |
Datasheet PDF
Datasheets record the features, absolute maximum ratings, applications and more of the device, which benefit a lot as an overall guide to the specific application of the part.
FAQs
What is LA4557?
The LA4557 is a dual-channel audio power amplifier integrated circuit (IC) designed by Sanyo. It is commonly used in audio applications such as stereo amplifiers, portable speakers, and audio receivers to amplify and drive audio signals to speakers or headphones.
How Does LA4557 Work?
The LA4557 operates by amplifying audio signals from input sources such as smartphones, MP3 players, or audio sources. It features two independent amplifier channels, allowing for stereo output. The IC is designed to deliver sufficient power to drive speakers while maintaining audio quality and efficiency.
How Many Pins does LA4557 have and What are the Functions of the Pinout Configuration?
The LA4557 is typically housed in a 12-pin SIP (Single In-line Package) or a 12-pin DIP (Dual In-line Package). The pinout configuration includes:
- VCC: Power supply pin.
- OUT1, OUT1B: Output pins for Channel 1.
- GND: Ground pin.
- IN1-, IN1+: Input pins for Channel 1.
- IN2-, IN2+: Input pins for Channel 2.
- OUT2, OUT2B: Output pins for Channel 2.
What are the Pros and Cons of LA4557?
Pros:
- Dual-Channel Design: Allows for stereo audio amplification.
- High Power Output: Capable of driving speakers with sufficient power.
- Compact Package: Available in small form factors for space-constrained designs.
- Easy to Use: Simple pinout and connection for straightforward integration.
Cons:
- Power Consumption: May have higher power consumption compared to lower-power alternatives.
- Thermal Considerations: Heat dissipation and thermal management may be required for high-power applications.
Are There Any Equivalents/Alternatives to LA4557 for Recommendation?
- An equivalent part to the LA4557 is the TDA7267 from STMicroelectronics.
- Alternatives to the LA4557 include the LM386 from Texas Instruments and the NJM2073D from New Japan Radio.
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