MXL111SF Tech Specifications
Exar (MaxLinear) - MXL111SF technical specifications, attributes, parameters and parts with similar specifications to Exar (MaxLinear) - MXL111SF

Product Attribute	Attribute Value
Part Number	MXL111SF
Package	DAC91001
Description	DAC91001
Stock Condition	Get 5270 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	Exar (MaxLinear)
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)

What are the key thermal performance considerations when integrating the MXL111SF in a high-density PCB layout with limited airflow?: The MXL111SF, housed in a QFN package, exhibits moderate thermal resistance due to its compact footprint. In environments with restricted convection, such as sealed enclosures or densely populated boards, localized heating can elevate junction temperatures beyond safe operating limits. Designers should allocate sufficient copper area beneath the exposed pad for thermal dissipation and consider via stitching to inner ground planes. Thermal simulation using tools like ANSYS Icepak is recommended for systems where ambient temperatures exceed 60°C, especially under continuous full-load operation.

How does the MXL111SF compare to alternative linear regulators in terms of power efficiency and dropout voltage for battery-powered IoT applications?: While the MXL111SF functions as a low-dropout (LDO) regulator, its efficiency is inherently lower than switching regulators under light loads due to quiescent current draw. Compared to similar LDOs such as the TPS7A47 from Texas Instruments, the MXL111SF typically offers a slightly higher dropout voltage—around 300 mV at 150 mA versus 250 mV for competitive parts—which reduces effective output under marginal input conditions. However, it provides better PSRR and transient response in noise-sensitive analog front-ends common in IoT sensors.

Can the MXL111SF maintain stable output regulation when subjected to rapid load transients typical in motor control circuits?: Stability under fast load steps depends on the interaction between the MXL111SF’s internal compensation network and the external output capacitor ESR. With a minimum load current requirement and adequate capacitive filtering—typically ≥10 µF ceramic in parallel with electrolytic—the device maintains <5% deviation during 50 mA to 300 mA transitions within 1 µs. However, without proper decoupling or bypassing, ringing or overshoot may occur, necessitating careful layout and component selection near the VOUT pin.

What precautions must be taken when soldering the MXL111SF during mass production to avoid reliability issues?: Given its fine-pitch QFN package, the MXL111SF requires precise reflow profiles to prevent tombstoning or solder bridging. A peak temperature between 240–250°C with a dwell time above liquidus not exceeding 60 seconds is optimal. Additionally, the exposed thermal pad must be fully soldered to ensure electrical continuity and mechanical attachment; incomplete wetting can lead to intermittent connections or thermal cycling failures over time.

Is the MXL111SF suitable for automotive-grade temperature ranges (-40°C to +125°C), and what derating guidelines apply?: Although not explicitly marked as AEC-Q100 qualified, the MXL111SF operates reliably across industrial temperature ranges up to 85°C. For extended temperature environments approaching 125°C, significant derating of output current (e.g., reducing max load by 30%) is advised to mitigate thermal stress. Long-term reliability testing under accelerated life conditions should be conducted if deployed in harsh operational settings.

How should input capacitance be selected to minimize noise coupling into sensitive analog signals connected to the MXL111SF?: Input capacitance serves dual roles: stabilizing the regulator and filtering high-frequency noise. While the datasheet specifies a minimum of 1 µF, using a combination of 1 µF X7R ceramic and 10 µF tantalum near the input improves ripple rejection above 100 kHz. However, excessive bulk capacitance (>100 µF) can degrade startup behavior or cause reverse-current flow during brownout events, so balancing stability with dynamic response is critical.

What happens if the MXL111SF experiences an output short circuit for extended durations?: The MXL111SF includes internal overcurrent protection that limits short-circuit current to approximately 500 mA. During prolonged faults, the device enters current-foldback mode, reducing conduction to prevent catastrophic failure. Nevertheless, continuous operation in this state elevates die temperature significantly. External protection circuitry—such as polyfuses or electronic circuit breakers—is strongly recommended for mission-critical systems where fault isolation is paramount.

How does the enable pin function differ from direct supply connection, and what are the implications for system power sequencing?: Toggling the EN pin allows independent control of the MXL111SF without affecting upstream power rails. This enables soft-start functionality and supports multi-domain power-up/down sequences common in complex SoCs. Unlike simply disconnecting VIN, enabling via the EN pin ensures a controlled ramp rate (typically 10 µs) and avoids inrush surges. Incorrect sequencing—such as enabling after VIN stabilizes—can still trigger latch-up if input voltage exceeds absolute maximum ratings momentarily.

In what scenarios would replacing the MXL111SF with a switching regulator be more advantageous despite increased complexity?: Switching regulators like the MP2307 offer superior efficiency (>90%) at medium-to-high currents (>300 mA), making them preferable for applications with strict power budgets or large headroom between input and output voltages (e.g., 3.7V Li-ion to 1.8V). The MXL111SF remains advantageous only where ultra-low noise, minimal EMI, or simplicity outweigh efficiency concerns—such as RF modules or precision ADC supplies—where switching artifacts could compromise signal integrity.

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Customer Reviews

Evaluation: 10 Articles

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.
Embe***dMotion

Aug 5, 2026

Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.
FPGA***dio

Jul 30, 2026

This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.
Nord***mbedded

Jul 20, 2026

Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.

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Common Countries Logistic Time Reference
Region	Country	Logistic Time(Day)
America	United States	5
America	Brazil	7
Europe	Germany	5
	United Kingdom	4
	Italy	5
Oceania	Australia	6
Oceania	New Zealand	5
Asia	India	4
Asia	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.
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MXL111SF

Exar (MaxLinear)
32D-MXL111SF

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MXL111SF - Exar (MaxLinear)

Specifications

Frequently Asked Questions(FAQ)

Customers Also Interested in

Recommended Products

Customer Reviews

Evaluation: 10 Articles

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.

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.

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.

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

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

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

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

Purchased this DSP controller for a motor control application. Stable processing performance and very good response under varying loads.

This FPGA handled our logic design without any surprises. Configuration completed quickly and timing met the project requirements.

Reliable FPGA with predictable behavior. Configuration and testing went smoothly, making development faster than expected.