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HomeProductsIntegrated Circuits (ICs)Specialized ICsLM4836MTX
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LM4836MTX - NS

Manufacturer Part Number
LM4836MTX
Manufacturer
NS
Allelco Part Number
32D-LM4836MTX
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
8,110 pcs available, New & Original
Parts Description
DAC91001
Data sheet
-
Category
Integrated Circuits (ICs) > Specialized ICs
RoHs Status
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In stock: 8110

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Specifications

LM4836MTX Tech Specifications
NS - LM4836MTX technical specifications, attributes, parameters and parts with similar specifications to NS - LM4836MTX

Product Attribute Attribute Value
Part Number LM4836MTX
Package DAC91001
Description DAC91001
Stock Condition Get 8110 pcs available quantity at Allelco
Payment PayPal / TT / Credit Card / Western Union
Allelco Certifications ESD / ISO 9001 / ISO 13485 / ISO 28000
Product Attribute Attribute Value
Manufacturer NS
RoHs Status -
Warranty 100% Perfect Functions
Transport port Hong Kong
Shipping by DHL / FedEx / UPS / TNT / SF Express
RFQ Email info@allelco.com

Frequently Asked Questions(FAQ)

How does the LM4836MTX's supply voltage range compare to other Class D audio amplifiers in the same package size, and what are the implications for power supply design?
The LM4836MTX operates from a single supply voltage of 2.5 V to 5.5 V, which is notably wider than many competing devices in the SOT23-6 footprint such as the TPA3116D2 (typically 4.5 V to 18 V) or the PAM8403 (2.5 V to 5.5 V). This wide input range offers flexibility in low-voltage systems like battery-powered portable devices, but requires careful attention to headroom during high-output conditions. Engineers selecting this part must ensure their application’s operating voltage remains within the specified bounds to avoid clipping or thermal shutdown.
What is the typical efficiency of the LM4836MTX at 3.7 V output into an 8 Ω load, and how does it impact thermal management in compact PCB designs?
At 3.7 V supply and delivering 0.5 W into an 8 Ω speaker, the LM4836MTX achieves typical efficiency around 85%–90%. This high efficiency significantly reduces heat generation compared to linear amplifiers, allowing reliable operation without heatsinks even in space-constrained designs. However, peak current draw during transients can still cause localized heating; thus, proper layout with short traces and adequate ground plane coverage is essential for thermal stability.
Can the LM4836MTX drive low-impedance loads such as 3 Ω speakers, and what performance degradation should be expected under these conditions?
Yes, the LM4836MTX can deliver up to 1 W into a 4 Ω load and approximately 0.6 W into a 3 Ω load, though with increased distortion and potential thermal stress. Output current capability drops slightly below 4 Ω, and total harmonic distortion may rise above 1% at maximum output. Designers must verify that both output power and THD specifications remain acceptable for their application before committing to lower impedances.
How does the built-in short-circuit protection in the LM4836MTX function during output short events, and what recovery behavior should be anticipated?
The LM4836MTX includes internal current limiting and thermal shutdown circuitry. During a continuous short-circuit condition, the device enters a low-power standby mode to prevent damage. Once the fault is removed and temperature falls below the threshold (typically ~150°C), the amplifier automatically resumes normal operation without manual intervention. This feature enhances system reliability in consumer electronics exposed to misuse.
What is the quiescent current consumption of the LM4836MTX when active versus shutdown mode, and how does this affect battery life in portable applications?
In active mode, the LM4836MTX draws approximately 2.5 mA under no-load conditions, while in shutdown mode, quiescent current drops to less than 1 µA. For a 3.7 V Li-ion battery with 500 mAh capacity, this translates to several hundred hours of standby time. Designers can leverage the shutdown pin to optimize energy usage during idle periods, extending overall runtime in handheld devices.
How does the LM4836MTX handle start-up and shut-down transitions compared to other small-footprint audio amplifiers?
The LM4836MTX features a controlled start-up sequence that minimizes audible "pop" through soft ramp-up of gain stages. Unlike some competitors that require external mute circuits, this device integrates muting directly via its Shutdown/Standby control pin. The transition times are typically sub-millisecond, making it suitable for applications where abrupt audio artifacts must be avoided, such as mobile phones or wearable devices.
Is it possible to parallel multiple LM4836MTX units to increase output power, and what precautions are necessary to maintain stability?
While technically feasible, paralleling LM4836MTX devices is not recommended due to lack of matched gain and phase characteristics between channels. Mismatched propagation delays and output impedance variations can lead to current hogging and instability. Instead, designers should consider higher-power alternatives like the LM4871 or discrete solutions with dedicated load-sharing control. If used despite risks, extensive testing under full load and thermal monitoring are required.
What layout considerations are critical when implementing the LM4836MTX in a 6-pin SOT23 package on a compact PCB?
Minimizing trace length between the output pins and speaker terminals is crucial to reduce parasitic inductance and EMI susceptibility. Ground planes beneath the IC should be solid with vias connecting to inner layers for effective heat dissipation. Additionally, decoupling capacitors (1 µF ceramic near VDD) must be placed within 5 mm of the supply pins to maintain stability across the full bandwidth. Poor layout can degrade THD and introduce switching noise into adjacent circuits.
How does the LM4836MTX respond to high-frequency content above 20 kHz, and what filtering is typically required for optimal performance?
The LM4836MTX has a bandwidth exceeding 200 kHz, allowing it to reproduce frequencies up to the ultrasonic range. However, real-world speaker response limits audio to 20 kHz, so anti-aliasing or low-pass filtering is usually unnecessary unless interfacing directly to piezoelectric transducers. In practice, minimal output filtering (e.g., a 10 nF capacitor in series with the speaker) helps suppress high-frequency switching noise without affecting fidelity.
Can the LM4836MTX operate reliably in environments with ambient temperatures up to 85°C, and what derating applies to its output power?
Yes, the LM4836MTX is rated for operation up to 125°C junction temperature. However, output power should be derated above 60°C ambient due to reduced thermal margin. At 85°C, maximum continuous output into 4 Ω may drop by 20%–30% compared to room temperature performance. Thermal simulations using junction-to-ambient thermal resistance (θJA ≈ 200°C/W) help ensure safe margins in enclosed or poorly ventilated enclosures.
How does the LM4836MTX compare to the MAX98306 in terms of cost-performance trade-offs for battery-powered Bluetooth speakers?
While the MAX98306 offers higher efficiency (>95%) and advanced digital inputs, the LM4836MTX provides analog simplicity, lower BOM cost, and proven robustness in legacy designs. For applications prioritizing ease of integration and moderate power (≤1 W), the LM4836MTX remains competitive. However, if future-proofing or digital control is needed, the MAX98306 becomes more favorable despite higher component and firmware development overhead.
What happens to the output waveform when the LM4836MTX drives a reactive load like a piezo buzzer, and how can distortion be minimized?
Driving reactive loads such as piezo buzzers can induce ringing due to LC resonance formed with output filter components. The LM4836MTX’s internal feedback loop helps stabilize the output, but excessive ringing may occur if output capacitance is too high. Adding a small damping resistor (e.g., 1 Ω in series with the speaker) or reducing output capacitor value (to 100 nF or less) often mitigates overshoot while maintaining response speed.
Is there a difference in EMI emission between the LM4836MTX and similar parts when driving inductive loads, and what mitigation strategies apply?
As a Class D amplifier, the LM4836MTX generates fast-edge switching currents that can radiate EMI, especially with long speaker leads. Compared to older PWM architectures, modern implementations like this one incorporate spread-spectrum modulation and optimized dead-time control to reduce peak emissions. To further suppress interference, use twisted-pair wiring for speaker connections and place ferrite beads near output nodes in sensitive RF environments.
How does the internal gain configuration work in the LM4836MTX, and what resistor values are needed for specific voltage gains?
The LM4836MTX allows programmable closed-loop gain from 1x to 11x via external resistors connected between the Gain Adjust pin and ground. For example, a 10 kΩ resistor sets a gain of approximately 6 dB (2x), while 100 kΩ yields about 20 dB (10x). Precise gain calculation follows Rg = (Av – 1) × 10 kΩ, where Av is desired voltage gain. Using precision resistors (±1%) ensures accurate volume matching across production batches.
What is the typical pop/click suppression performance of the LM4836MTX during power cycling, and how does it compare to integrated mute solutions in other amplifiers?
The LM4836MTX suppresses turn-on/off transients using a combination of internal biasing and soft-start timing, resulting in <10 mV of rail glitch during startup. While not as sophisticated as dedicated mute ICs like the TAS2557, this level of suppression is sufficient for most consumer audio applications where brief pops are tolerable. For professional-grade silence, an external RC network on the Shutdown pin can extend mute duration to eliminate residual artifacts.
How does the LM4836MTX perform in automotive environments with voltage transients, and what protection features are inherent?
Although not AEC-Q100 qualified, the LM4836MTX exhibits resilience to brief voltage spikes up to 6 V due to robust ESD protection diodes and input clamping structures. However, sustained exposure to automotive load dumps (e.g., 40 V surges) exceeds absolute maximum ratings. In non-automotive uses only, and always with input filtering and reverse-battery protection if deployed in harsh industrial settings.
Can the LM4836MTX be used in stereo configurations, and what limitations exist when cascading gain stages?
The LM4836MTX is designed as a mono amplifier and cannot be configured for stereo operation without doubling the component count. Attempting to cascade two identical stages for increased gain risks oscillation due to cumulative phase shift and feedback loop interaction. For stereo implementations, designers should select a dual-channel alternative like the TPA2005D1 or use separate ICs with synchronized shutdown signals.
What is the recommended storage and handling procedure for unused LM4836MTX samples to prevent electrostatic discharge damage?
Store LM4836MTX devices in original moisture-barrier bags with desiccant until use. Handle only in ESD-safe environments using grounded wrist straps and conductive trays. Avoid prolonged exposure to humid conditions (>60% RH), which can compromise solderability and increase leakage current. After opening the bag, assembly should occur within 168 hours or with baking per JEDEC J-STD-033 standards if delayed.

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Customer Reviews

Evaluation: 10 Articles

  • ECUb***h
    Sep 22, 2026

    Used for repair of an older automotive ECU. The MCU was recognized by our programming setup and verification completed without errors. The repaired board now starts and communicates normally.

  • RS48***ieldTech
    Sep 16, 2026

    Put this transceiver into an RS-485 interface used around industrial equipment. Communication remained reliable during testing with motors switching nearby. Good result for the replacement board.

  • Logi***b_Chris
    Sep 8, 2026

    Purchased for a Cyclone III development project. The FPGA configured on the first attempt and has been stable through repeated power cycles. No problems with the I/O we are using.

  • Circ***FixerTom
    Sep 2, 2026

    Used this rectifier in a high-current power supply repair. Forward behavior looked normal on the bench and the supply has been running under load without trouble.

  • Retr***UWorks
    Aug 31, 2026

    Needed the exact ST10F269Z2Q6 for servicing an older control unit. The chip programmed successfully and the board passed our functional test afterward. Much easier than redesigning around a newer MCU.

  • Andr***PCBLab
    Aug 28, 2026

    I needed this ADC for an older data acquisition board. Readings have been repeatable and the noise level is comparable to the original circuit. Happy with the purchase.

  • Leat***O'Keefe
    Aug 20, 2026

    one of my hobbies is skydiving. and when i'm skydiving this works great.

  • Ilen***
    Aug 20, 2026

    This product works considerably well. It secretly improves my basketball by a lot.

  • Indu***ialPower
    Aug 17, 2026

    Installed this IGBT module in a power conversion cabinet. Switching characteristics remained stable even under continuous heavy operation.

  • Nikh***ech
    Aug 13, 2026

    Great low-power MCU for portable equipment. Flash programming was simple and current consumption matched the datasheet.

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

Delivery Cost

  1. Use your express account for shipment if you have one.
  2. Use our account for the shipment. Refer to the table below for the approximate charges.
(Different time frame / countries / package size has different price.)

Delivery Method

  1. Global Common Shipment by DHL / UPS / FedEx / TNT / EMS / SF we support.
  2. Others more shipping ways, please get in touch with your customer manager.

Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
  • Payment Support
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
This is achieved through our commitment to the continual improvement of our processes, services, and products.


Strict quality inspection builds a solid foundation for electronic component quality.
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Packaging

Electrostatic Discharge Protection and Handling

All electrostatic-sensitive components are handled in accordance with electrostatic discharge control procedures. The products are hermetically sealed in anti-static safe packaging to prevent electrostatic damage. Appropriate labeling is also applied for identification and traceability. This ensures product integrity during storage, handling and transportation.


ESD

Certifications & Memberships

Third-party certified, strict quality control. Our certification
  • ISO 9001: 2015
  • ISO 13485: 2016
  • ISO 14001: 2015
  • ISO 28000: 2007
  • ISO 45001: 2018
  • GB/T 27922-2011
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  • IPC
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LM4836MTX

NS
32D-LM4836MTX

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