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MIC3201YME-TR
Microchip Technology
IC LED DRIVER RGLTR PWM 1A 8SOIC
22932 Pcs New Original In Stock
LED Driver IC 1 Output DC DC Regulator Step-Down (Buck) PWM Dimming 1A (Switch) 8-SOIC-EP
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5.0 / 5.0
- (58 Ratings)
MIC3201YME-TR
Product Overview
1365636
DiGi Electronics Part Number
MIC3201YME-TR-DGManufacturer
Microchip Technology
MIC3201YME-TR
Description
IC LED DRIVER RGLTR PWM 1A 8SOICInventory
22932 Pcs New Original In Stock
LED Driver IC 1 Output DC DC Regulator Step-Down (Buck) PWM Dimming 1A (Switch) 8-SOIC-EP
Quantity
Minimum 1
Minimum 1
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MIC3201YME-TR Technical Specifications
Category
Power Management (PMIC), LED Drivers
Packaging
Cut Tape (CT)
Series
-
Product Status
Active
Type
DC DC Regulator
Topology
Step-Down (Buck)
Internal Switch(s)
Yes
Number of Outputs
1
Voltage - Supply (Min)
6V
Voltage - Supply (Max)
20V
Voltage - Output
-
Current - Output / Channel
1A (Switch)
Frequency
1MHz
Dimming
PWM
Applications
Lighting
Operating Temperature
-40°C ~ 125°C (TJ)
Mounting Type
Surface Mount
Package / Case
8-SOIC (0.154", 3.90mm Width) Exposed Pad
Supplier Device Package
8-SOIC-EP
Base Product Number
MIC3201
Datasheet & Documents
HTML Datasheet
MIC3201YME-TR-DG
Environmental & Export Classification
RoHS Status
ROHS3 Compliant
Moisture Sensitivity Level (MSL)
2 (1 Year)
REACH Status
REACH Unaffected
ECCN
EAR99
HTSUS
8542.39.0001
Additional Information
Other Names
MIC3201YME-DKR
MIC3201YME TR-DG
MIC3201YME TR
MIC3201YME-CT
Standard Package
2,500
Alternative Parts
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Reviews
5.0/5.0-(Show up to 5 Ratings)
Dec 02, 2025
他們的客戶服務團隊在處理物流問題時，反應敏捷且解決問題能力強。
Dec 02, 2025
DiGi Electronics stands out for their transparent return policies and hassle-free process.
Dec 02, 2025
The after-sales service at DiGi Electronics is truly exceptional, always prompt and helpful.
Dec 02, 2025
We highly value their promptness in restocking and their caring customer support.
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Frequently Asked Questions (FAQ)
What are the key design-in risks when using the MIC3201YME-TR in a high-temperature lighting application, and how can thermal performance be optimized on a standard FR4 PCB?
When using the MIC3201YME-TR in high-ambient-temperature environments (up to 125°C junction), thermal runaway is a key risk due to power dissipation from the internal 1A switch and switching losses. To mitigate this, maximize PCB copper area connected to the exposed pad (EP) for heatsinking—use at least 1 in² of solid copper with multiple thermal vias to inner layers. Avoid placing heat-sensitive components nearby, and consider reducing switching frequency if PWM dimming allows, to lower dynamic losses. The 8-SOIC-EP package has limited thermal resistance performance without proper layout; junction-to-air (θJA) can exceed 100°C/W in minimal copper designs, risking premature thermal shutdown or long-term reliability degradation.
How does the MIC3201YME-TR compare to the TPS92551TZ/NOPB in terms of PWM dimming resolution and suitability for flicker-sensitive LED applications?
The MIC3201YME-TR supports high-frequency PWM dimming with a 1MHz fixed switching frequency, enabling smoother dimming control and reduced visible flicker compared to the TPS92551TZ/NOPB, which operates at 400kHz and may require external filtering for flicker mitigation in human-centric lighting. The higher frequency of the MIC3201YME-TR allows for smaller LC filters and better compatibility with microcontroller-generated PWM signals. However, the TPS92551 offers analog dimming as a backup, which the MIC3201YME-TR lacks. For applications requiring deep dimming below 1%, ensure the input PWM signal resolution is ≥10 bits and duty cycle stability is maintained to prevent audible noise or LED current droop due to blanking times in the internal control loop.
Can the MIC3201YME-TR reliably replace the LM3404MA/NOPB in an existing 1A LED driver design, and what layout changes are required?
Yes, the MIC3201YME-TR can replace the LM3404MA/NOPB in most 1A buck LED driver applications, offering similar step-down topology and supply range (6V–20V), but with improved 1MHz switching frequency for reduced component size. Key differences include the MIC3201YME-TR’s integrated PWM dimming control versus the LM3404’s direct enable-based dimming, requiring modification of the control circuitry to route a separate PWM signal. Additionally, the MIC3201YME-TR uses an exposed pad package (8-SOIC-EP), necessitating PCB revisions to include thermal vias and proper grounding of the EP, unlike the standard SOIC package of the LM3404. Verify inductor saturation current and input capacitor ripple current ratings remain sufficient at higher frequency to avoid premature component failure.
What are the critical inductor and output capacitor selection criteria for ensuring stability in the MIC3201YME-TR when driving high-current LEDs in automotive environments?
For stable operation of the MIC3201YME-TR in noisy automotive conditions, select an inductor with a saturation current rating ≥1.5A (preferably 2A) and low DCR (<100mΩ) to handle transients and prevent core saturation during cold-crank events. A 4.7μH to 10μH shielded inductor is typical; lower values allow faster transient response but increase ripple. Use ceramic output capacitors (X7R or X5R) with at least 10μF total capacitance close to the LED load to minimize voltage overshoot during PWM on/off transitions. Include a small RC snubber (e.g., 10Ω + 100pF) across the switching node and ground if ringing is observed, especially in high di/dt layouts. Poor layout or undersized output capacitance can cause false overvoltage triggering or light flicker during load transients.
What are the reliability concerns when using the MIC3201YME-TR in long-life outdoor LED lighting, and how does it compare to the LT3592EMSE#TRPBF in harsh environments?
The MIC3201YME-TR is rated for -40°C to 125°C junction operation, making it suitable for outdoor lighting, but its long-term reliability depends on thermal management and moisture resistance. Ensure conformal coating is applied to protect against humidity-induced leakage currents, especially near the exposed pad. Unlike the LT3592EMSE#TRPBF, which includes built-in thermal foldback and more robust short-circuit protection, the MIC3201YME-TR relies on cycle-by-cycle current limiting and thermal shutdown—requiring additional external overvoltage and overtemperature monitoring for fail-safe operation. To enhance reliability, use a derated input voltage margin (stay below 18V), include input transient protection (TVS diode), and validate performance under repeated thermal cycling to avoid solder joint fatigue in field deployments.
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MIC3201YME-TR CAD Models
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