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Microchip Technology MIC7401YFL-TR
- Part No.:
- MIC7401YFL-TR
- Manufacturer:
- Microchip Technology
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
MIC7401YFL-TR.pdf
- Description:
- IC REG BUCK BST PROG HEX 36FQFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,399
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Product details
Overview
MIC7401YFL-TR from Microchip Technology is a highly integrated, I²C-programmable power-management IC (PMIC) featuring five synchronous buck regulators (up to 3A each), one non-synchronous boost regulator (200 mA), and on-chip EEPROM for runtime configuration. It operates from 2.4V–5.5V input, delivers ±1% output voltage accuracy, supports dual power modes (Standby/Normal), and targets FPGA, ASIC, and processor core rail sequencing in space-constrained infotainment and network systems.
For engineers reviewing the MIC7401YFL-TR datasheet, MIC7401YFL-TR pinout, MIC7401YFL-TR application, or MIC7401YFL-TR equivalent, this page provides verified technical context, validated pin functions, confirmed buck/boost performance metrics, real-world sequencing capabilities, and two rigorously cross-checked alternative PMICs with documented functional trade-offs.
Technical Context
The MIC7401YFL-TR implements adaptive on-time control across all five bucks for ultra-fast transient response, while its boost regulator uses PWM mode at 2.0 MHz with programmable current limit and short-to-ground fault disconnect. Internal EEPROM enables field-updatable configurations-including per-rail voltage scaling, soft-start ramp, power-up sequencing delay, and individual ON/OFF/standby states-without hardware revision.
It features dual-mode operation: Normal mode enables full programmability of all six outputs via I²C up to 3.4 MHz; Standby mode reduces system power by lowering or disabling selected rails, with exit triggered either by STBY pin edge or I²C command. Thermal shutdown (160°C) and overcurrent protection are implemented per channel with dedicated sense paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.4V to 5.5V - Supports single-cell Li-ion, USB, and industrial 3.3V/5V rails without external pre-regulation. |
| Buck Output Count & Max Current | 5 × synchronous bucks, up to 3A each - Powers multi-core SoCs, FPGAs, and memory subsystems with independent rail control. |
| Boost Output | 1 × non-synchronous boost, 200 mA @ 7–14V - Generates Flash programming voltage or auxiliary bias supply with built-in disconnect switch. |
| I²C Interface Speed | Up to 3.4 MHz High-Speed mode - Enables rapid configuration updates during boot or dynamic voltage scaling in real time. |
| Output Accuracy | ±1% over line/load/temperature - Ensures reliable core logic operation across automotive-grade junction range (–40°C to +125°C). |
| Quiescent Current | 200 µA (all regulators active), 5 µA (shutdown) - Meets stringent battery-backed standby requirements in portable POS and infotainment. |
| Package | 36-pin FQFN, 4.5 mm × 4.5 mm × 0.85 mm, 0.4 mm pitch - Enables compact, low-profile layout with thermal pad (EP) for high-power density. |
Pinout & Package
36-pin FQFN (4.5 mm × 4.5 mm × 0.85 mm, 0.4 mm pitch) with exposed thermal pad (EP). Pinout validated per DS20005618A-page 19–21.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1–SW5 | Buck switch node | Connects to inductor for each synchronous buck; requires local ceramic output capacitor and proper PCB layout for EMI control. |
| OUT1–OUT5 | Buck output voltage sense | Remote sensing point for feedback loop; also enables internal 90Ω pull-down when disabled (programmable via PULLD[x]). |
| SW6 | Boost switch node | Inductor connection for boost stage; paired with PVIN6O to form boost power path with integrated disconnect MOSFET. |
| OUT6 | Boost output voltage sense | Sense point for 7–14V boost output; supports programmable current-source discharge during disable. |
| SDA / SCL | I²C bidirectional data / clock | Open-drain interface requiring external pull-ups; supports 3.4 MHz operation for fast register writes and status reads. |
| STBY / EN | Standby trigger / global enable | STBY initiates low-power state (edge-triggered); EN is CMOS-compatible master enable that gates I²C access and all outputs. |
| AVIN / AGND | Analog reference supply / ground | Independent analog domain powers internal references and POR circuitry; must be decoupled with 2.2 µF ceramic cap to AGND. |
| PGND1–PGND6 | Per-channel power ground | Separate ground returns for each buck/boost stage minimize noise coupling and improve current-sense accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| On-the-fly EEPROM programmability | Runtime reconfiguration of voltages, sequencing delays, soft-start ramps, current limits, and pull-down behavior without firmware update or re-spin. |
| Ultra-fast buck transient response | Validated load-step recovery in <10 µs (e.g., Buck 4: 10 mA → 3A) - maintains core voltage stability during processor burst activity. |
| Programmable power-up sequencing | Configurable inter-rail delays (0.96–1.04 ms steps) and maskable Power Good signals - ensures safe boot order for complex SoCs and FPGAs. |
| Integrated boost disconnect switch | 90 mΩ on-resistance MOSFET isolates VOUT6 from input during shutdown - eliminates leakage current and improves system-level standby efficiency. |
| Dual operating modes | Standby mode reduces total quiescent current to <5 µA while preserving register state; exit via STBY pin or I²C restores full functionality instantly. |
Applications
| POS Terminal Power Management | Network Switch Core Rail Sequencing |
|---|---|
Use Scenario: Compact point-of-sale terminals requiring multiple regulated rails (CPU, display, NFC, secure element) with battery backup and fast wake-from-standby. IC Role / Device Role / Timing Role: Centralized PMIC managing five buck rails for processor/memory/peripherals and one boost rail for secure element programming voltage. Use Value: Reduces BOM count by consolidating six DC/DC controllers into one chip; EEPROM-based sequencing eliminates external timing components and simplifies firmware bring-up. |
Use Scenario: Layer-2/Layer-3 Ethernet switches with multi-core packet processors needing strict power-up sequence and thermal-aware rail throttling. IC Role / Device Role / Timing Role: Configurable power sequencer and supervisor coordinating core, I/O, PHY, and management controller rails with programmable PG masking. Use Value: Enables dynamic reconfiguration of rail order and voltage levels via I²C during field upgrades; thermal shutdown protects against airflow failure in fanless designs. |
| Automotive Infotainment Head Unit | 3D Active Shutter Glasses Driver |
Use Scenario: In-vehicle infotainment head units operating across –40°C to +125°C junction temperature with CAN/FlexRay coexistence. IC Role / Device Role / Timing Role: Primary power controller delivering stable 1.1V/1.25V/1.8V rails to application processor and GPU, plus 12V boost for display backlight driver. Use Value: ±1% output accuracy and 160°C thermal shutdown ensure reliability under engine-bay thermal stress; low 200 µA quiescent current extends battery drain time. |
Use Scenario: Battery-powered 3D shutter glasses requiring precise, low-noise 3.3V and 5V rails for LCD drivers and IR transceivers. IC Role / Device Role / Timing Role: Dual-buck regulator generating clean, sequenced supplies with ultra-low ripple (<10 mVpp) using small 10 µF ceramic capacitors. Use Value: HyperLight Load® mode maintains >85% efficiency at 1 mA load; compact 12 mm × 8.55 mm solution size fits within tight mechanical envelope. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar configurable PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4436-AEC1 from Monolithic Power Systems | Four buck channels (3A max), no boost; AEC-Q100 Grade 1 qualified; fixed-frequency current-mode control vs. adaptive on-time. | Lacks boost output and EEPROM programmability; suited for automotive body electronics but not Flash-programming or infotainment auxiliary rails. | Select when AEC-Q100 compliance is mandatory and boost functionality is handled externally; not drop-in due to missing boost and I²C configurability. |
| TPS650860 from Texas Instruments | Six bucks (3A/2A/2A/1.5A/1.5A/1A), no boost; integrated LDOs; I²C + SPI interface; 0.65 mm pitch BGA package. | Higher channel count but lower per-buck current capability; lacks boost converter and uses larger BGA footprint (6.0 mm × 6.0 mm). | Choose for designs needing more LDOs and SPI fallback; avoid if board space is constrained or 12V Flash supply is required. |
Compared with MPQ4436-AEC1 and TPS650860, the MIC7401YFL-TR uniquely integrates both five high-current bucks and a programmable boost in a 4.5 mm × 4.5 mm FQFN, enabling single-chip power solutions for FPGA/ASIC platforms where auxiliary high-voltage rails and field-updatable sequencing are critical.
Availability
MIC7401YFL-TR is available at Aetrix Electronics and suitable for point-of-sale terminals, network switches, automotive infotainment systems, and 3D shutter glasses requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MIC7401YFL-TR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with emphasis on reliability, longevity, and design-in support.
The MIC7401YFL-TR belongs to Microchip's configurable PMIC product line, designed specifically for low-power FPGA, ASIC, and application processor platforms requiring flexible, EEPROM-based power sequencing and compact multi-rail integration.
FAQ
What is the maximum supported I²C clock frequency for the MIC7401YFL-TR?
The MIC7401YFL-TR supports I²C High-Speed mode up to 3.4 MHz, as confirmed in Table 1-1 of the official datasheet (DS20005618A). This allows rapid register writes for dynamic voltage scaling and sequencing updates. The interface remains fully functional only when the EN pin is asserted high; I²C communication is disabled during shutdown. All timing parameters-including setup/hold times-are specified for this speed grade.
Does the MIC7401YFL-TR support independent enable/disable control for each buck regulator?
Yes, the MIC7401YFL-TR supports per-rail ON, OFF, and Standby modes via I²C register writes to the MODE[x] bits. Each buck (OUT1–OUT5) and the boost (OUT6) can be individually controlled without affecting other outputs. This capability is implemented through dedicated control logic and verified in the block diagram (DS20005618A-page 3) and register map section.
What is the purpose of the PVIN6O pin on the MIC7401YFL-TR?
PVIN6O is the output terminal of the internal disconnect switch for the boost regulator. When the boost is enabled, PVIN6O connects to the boost inductor; when disabled, the internal P-channel MOSFET opens, isolating the boost output (VOUT6) from the input supply (PVIN6) to prevent leakage current. Its on-resistance is 90 mΩ at 3.3V, as specified in Table 1-1.
Can the MIC7401YFL-TR operate with input voltages below 2.4V?
No-the absolute minimum input voltage is 2.4V, as defined in the Operating Ratings table (DS20005618A-page 4). Below this threshold, undervoltage lockout (UVLO) activates at 2.25V typical, disabling all regulators. Attempting operation below 2.4V risks undefined behavior, failed startup, or improper sequencing; the device is not characterized or guaranteed for sub-2.4V operation.
How does the MIC7401YFL-TR handle thermal overload conditions?
The MIC7401YFL-TR incorporates thermal shutdown protection that triggers at 160°C junction temperature (typical), with 20°C hysteresis. Upon activation, all regulators shut down immediately and remain off until the die cools below 140°C. This behavior is hardware-enforced and independent of I²C or EN pin state, ensuring robust protection during sustained overload or poor heatsinking scenarios.
MIC7401YFL-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 36-VFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Up, Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck, Boost
- Output Type:
- Programmable
- Number of Outputs:
- 6
- Voltage - Input (Min):
- 2.4V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.05V, 1.1V, 1.25V, 1.8V, 12V
- Voltage - Output (Max):
- -
- Current - Output:
- 200mA, 3A
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 36-FQFN (4.5x4.5)
MIC7401YFL-TR FAQ
1.How can I place an order for MIC7401YFL-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC7401YFL-TR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MIC7401YFL-TR reliable?
The price and inventory of MIC7401YFL-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC7401YFL-TR is usually 5 days.
3.What payment methods are accepted for MIC7401YFL-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC7401YFL-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC7401YFL-TR?
MIC7401YFL-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC7401YFL-TR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MIC7401YFL-TR?
For technical support, including MIC7401YFL-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC7401YFL-TR requirements.
6.How does Aetrix verify that MIC7401YFL-TR is sourced from the original manufacturer or authorized distributors?
All MIC7401YFL-TR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MIC7401YFL-TR meets industry standards.
7.What is the process for return or replacement of MIC7401YFL-TR?
All MIC7401YFL-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC7401YFL-TR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MIC7401YFL-TR part is unused and in its original packaging.
Return procedure for MIC7401YFL-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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