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Home > Products > Integrated Circuits (ICs) > Specialized ICs > MM3529R1Q-1Y
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MM3529R1Q-1Y

Manufacturer Part Number:
MM3529R1Q-1Y
Manufacturer / Brand
MITSMI
Part of Description:
MITSMI QFN
Datasheets:
Lead Free Status / RoHS Status:
RoHS Compliant
Stock Condition:
New original, 4168 pcs Stock Available.
ECAD Model:
Ship From:
Hong Kong
Shipment Way:
DHL/Fedex/TNT/UPS

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Part Number MM3529R1Q-1Y
Manufacturer / Brand MITSMI
Stock Quantity 4168 pcs Stock
Category Integrated Circuits (ICs) > Specialized ICs
Description MITSMI QFN
Lead Free Status / RoHS Status: RoHS Compliant
Condition New Original Stock
Warranty 100% Perfect Functions
Lead Time 2-3days after payment.
Payment Credit Card / PayPal / Telegraphic Transfer (T/T) / Western Union
Shipping by DHL / Fedex / UPS / TNT
Port HongKong
RFQ Email Info@IC-Components.com

Packaging & ESD

Industry-standard static shielding packaging is used for electronic components.Anti-static, light-transparent materials allow easy identification of ICs and PCB assemblies.
The packaging structure provides electrostatic protection based on Faraday cage principles.This helps protect sensitive components from static discharge during handling and transportation.


All products are packed in ESD-safe anti-static packaging. Outer packaging labels include part number, brand, and quantity for clear identification. Goods are inspected prior to shipment to ensure proper condition and authenticity.

ESD protection is maintained throughout packing, handling, and global transportation. Secure packaging provides reliable sealing and resistance during transit. Additional cushioning materials are applied when required to protect sensitive components.

QC(Part Testing by IC Components)Quality Warranty

We can offer worldwide express delivery service, such as DHLor FedEx or TNT or UPS or other forwarder for shipment.

Global Shipment by DHL/FedEx/TNT/UPS

Shipping Fees reference DHL/FedEx
1). You can offer your express delivery account for shipment, ifyou haven’t any express account for shipment, we can offer our account inadvance.
2). Use our account for shipment, Shipment charges(Reference DHL/FedEx, Different Countries has different price.)
Shipment charges： (Reference DHL and FedEX)
Weight(KG): 0.00kg-1.00kg Price(USD$) : USD$60.00
Weight(KG): 1.00kg-2.00kg Price(USD$) : USD$80.00
* The price of cost is reference with DHL/FedEx. The detail charges, please contact us. Different country the express charges are different.



We accept the payment terms: Telegraphic Transfer(T/T), Credit Card, PayPal and Western Union.

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PayPal Bank Information:
Company Name : IC COMPONENTS LTD
Paypal ID: PayPal@IC-Components.com

BANK TRANSFAR (Telegraphic Transfer)

Payment For Telegraphic Transfers:
Company Name : IC COMPONENTS LTD Beneficiary Account Number : 549-100669-701
Beneficiary Bank name : Bank of Communications (Hong Kong) Ltd Beneficiary Bank Code : 382 (for local payment)
Beneficiary Bank SWIFT : COMMHKHK
Beneficiary Bank Address : Tsuen Wan Market Street Branch 53 Market Street, Tsuen Wan N.T., Hong Kong

Any inquires or questions, please kindly contact us Email: Info@IC-Components.com


Frequently Asked Questions

MM3529R1Q-1Y can it operate reliably in high-temperature industrial environments without derating?
The MM3529R1Q-1Y is rated for operation up to 105°C junction temperature, but long-term reliability above 85°C may require derating of power dissipation and careful PCB thermal management. In continuous industrial applications exceeding 70°C ambient, thermal simulation and accelerated life testing are recommended to validate design margin.
What configuration methods are supported by the MM3529R1Q-1Y, and how do they affect startup behavior in isolated DC-DC converter designs?
The MM3529R1Q-1Y supports pin-strapping configuration via external resistors for fixed output voltages and enable/disable control. This method introduces a finite rise time on the EN pin, which can delay soft-start sequencing in multi-output systems. Engineers must ensure timing coordination with downstream loads to prevent inrush current or brownout conditions during startup.
Can the MM3529R1Q-1Y be used with synchronous rectification in a 48V-to-12V buck converter without modifying the control loop compensation?
The MM3529R1Q-1Y is designed for non-synchronous buck converters; it does not support synchronous rectification. Attempting to use it in a synchronous topology requires replacing the internal MOSFET with an external one, which alters feedback dynamics and necessitates re-evaluation of compensation network stability.
How does the minimum input voltage of the MM3529R1Q-1Y affect cold-start performance in automotive applications with load-dump transients?
With a minimum input voltage of 4.5V, the MM3529R1Q-1Y may fail to start during cold cranking below this threshold. In automotive systems where input drops transiently, an external pre-regulator or bulk capacitance with overvoltage clamping is advised to maintain stable startup under all load conditions.
What are the trade-offs when selecting alternative controllers to replace the MM3529R1Q-1Y in a compact 5W isolated flyback design?
Replacing the MM3529R1Q-1Y with higher-efficiency alternatives like the MP166 or TPS54620 may improve efficiency but often increases component count or board area due to stricter layout requirements. Trade-offs include reduced standby power at the expense of EMI compliance and tighter thermal gradients across the QFN package.
Does the MM3529R1Q-1Y support hiccup-mode protection during short-circuit events, and what recovery time should be expected?
Yes, the MM3529R1Q-1Y enters hiccup-mode shutdown upon sustained overcurrent or short-circuit conditions. Recovery occurs after a 2-second internal timer, followed by a soft-start sequence. Designers must account for this ~2-second latency in safety-critical systems requiring faster fault response.
Is the MM3529R1Q-1Y compatible with ceramic output capacitors without risk of instability due to ESL effects?
While ceramic capacitors reduce output ripple and improve transient response, their low ESR can destabilize the control loop if not compensated. A Type III compensator with zero placed appropriately near the crossover frequency is required to maintain phase margin, especially at light loads and high switching frequencies.
What precautions are needed when routing signals near the SW node of the MM3529R1Q-1Y to minimize EMI and ringing?
The switching node (SW) of the MM3529R1Q-1Y should be routed with minimal trace length and kept away from sensitive analog traces. Use ground stitching vias around the QFN pad and implement a Kelvin connection for feedback sensing to reduce radiated noise and improve regulation accuracy in noisy environments.
Can the MM3529R1Q-1Y be used in a multi-phase interleaved buck configuration for high-current applications?
No, the MM3529R1Q-1Y is a single-phase controller and lacks phase-shift synchronization inputs. Attempting interleaving would require additional external drivers and clock distribution circuitry, increasing complexity and cost without leveraging its native capabilities.
What is the impact of using a lower-frequency crystal oscillator on the MM3529R1Q-1Y’s internal timing accuracy and PWM resolution?
The MM3529R1Q-1Y uses internal RC timing; external crystals are not required. Using a lower-frequency oscillator would degrade timing precision, affecting PWM duty cycle accuracy and potentially introducing jitter in applications requiring tight voltage regulation under dynamic loads.

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