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Microchip Technology MIC7400YFL-TR
- Part No.:
- MIC7400YFL-TR
- Manufacturer:
- Microchip Technology
- Package:
- 36-VFQFN Exposed Pad
- Datasheet:
-
MIC7400YFL-TR.pdf
- Description:
- IC REG BUCK BST PROG HEX 36FQFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,232
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Product details
Overview
MIC7400YFL-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), HyperLight Load® and PFM light-load modes, 1.3 MHz buck/2.0 MHz boost switching frequencies, and ±1.5% output voltage accuracy over temperature, line, and load. It serves as a multi-rail power solution for SSDs and infotainment SoCs requiring precise sequencing and low-quiescent-current operation.
For engineers reviewing the MIC7400YFL-TR datasheet, MIC7400YFL-TR pinout, MIC7400YFL-TR application, or MIC7400YFL-TR equivalent, this page delivers verified technical context, validated pin functions, confirmed efficiency curves at 1 mA and full load, real-world sequencing capabilities, and two rigorously cross-checked alternative PMICs with documented functional trade-offs.
Technical Context
The MIC7400YFL-TR implements adaptive on-time buck control per channel for ultra-fast transient response-critical for CPU/GPU core rails-and integrates a dedicated boost converter with output disconnect for flash programming supplies. Its internal EEPROM enables field-programmable configuration of voltage levels, current limits, soft-start ramps, and power-up sequencing without hardware changes.
Dual power modes (standby/normal) are managed via I²C commands or the STBY pin, with independent exit paths and programmable POR thresholds (2.6–3.7 V). All six regulators support pull-down-on-disable, thermal shutdown (160°C), and overcurrent protection, while the 36-pin FQFN package enables compact 15 mm × 15 mm solutions with ≤1 mm height.
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 LDO pre-regulation. |
| Buck Output Accuracy | ±1.5% over temp/line/load - ensures stable core voltage for high-speed NAND controllers in SSDs under varying thermal conditions. |
| Buck Switching Frequency | 1.3 MHz (continuous mode) - enables use of 0.47 µH inductors and reduces output capacitor size to 10 µF per rail. |
| Boost Output Range | 7V to 14V - targets NAND flash programming voltages (e.g., 12V Vpp) with 200 mA drive capability. |
| I²C Interface Speed | Up to 3.4 MHz (High-Speed Mode) - allows rapid reconfiguration during runtime, e.g., dynamic voltage scaling between active/idle states. |
| Quiescent Current | 200 µA (all regulators on) - extends battery life in portable handheld devices during standby without sacrificing wake-up responsiveness. |
| Package | 36-pin FQFN, 4.5 mm × 4.5 mm × 0.85 mm, 0.4 mm pitch - compatible with standard SMT assembly and supports high-density PCB layouts. |
| Junction Temperature | –40°C to +125°C - qualified for automotive infotainment and industrial gateway applications with no derating up to 125°C ambient. |
Pinout & Package
36-pin FQFN (4.5 mm × 4.5 mm × 0.85 mm, 0.4 mm pitch) with exposed pad (EP) for thermal dissipation. Pin functions validated per DS20005887A-page 18–20.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| SW1–SW5 | Buck switch node outputs | Connect to inductor high-side; each drives one synchronous buck stage (OUT1–OUT5) with integrated 40–54 mΩ high-side MOSFETs. |
| SW6 | Boost switch input | Connects inductor between PVIN6O and SW6; enables boost topology with internal 140–160 mΩ low-side MOSFET. |
| OUT1–OUT5 | Buck output voltage sense inputs | Remote sensing points; also provide 90 Ω pull-down discharge path when disabled (programmable via PULLD[x]). |
| OUT6 | Boost output voltage sense input | Senses VOUT6; enables programmable current-source pull-down (not fixed resistor) during disable. |
| STBY | Standby mode control input | Edge-triggered (default high-to-low); initiates low-power state without I²C traffic; requires pull-down ≤100 kΩ if not driven. |
| SDA/SCL | I²C bidirectional data/clock | Open-drain, 3.4 MHz capable; require external pull-ups; interface to EEPROM registers for real-time voltage/sequence reprogramming. |
| POR | Power-on-reset open-drain output | Asserts after programmable delay (18–22 ms); signals system readiness once all rails meet PG thresholds. |
| PG | Global power-good open-drain output | Active-low; asserts only when all six outputs meet 87–95% VOUT threshold with 4% hysteresis (buck) or 380 mV (boost). |
Key Features
| Feature | Design Value |
|---|---|
| Five-channel synchronous buck + one boost | Single-chip replacement for six discrete DC/DC converters; eliminates board space, BOM count, and layout complexity in multi-rail systems. |
| HyperLight Load® & PFM modes | 23 µA typical buck / 70 µA typical boost quiescent current - sustains >85% efficiency at 1 mA load, critical for always-on subsystems. |
| I²C on-the-fly EEPROM programmability | Runtime adjustment of output voltages, sequencing delays, current limits, and soft-start without firmware update or power cycle. |
| Programmable power-on reset and sequencing | Configurable POR delay (18–22 ms), individual channel enable timing (0.96–1.04 ms steps), and voltage ramp control for reliable SoC boot. |
| Thermal and fault protection | 160°C thermal shutdown with 20°C hysteresis, per-channel overcurrent detection, and boost short-to-ground disconnect - prevents catastrophic failure in field operation. |
| Ultra-compact solution size | 15 mm × 15 mm × <1 mm total footprint - achieved using 0.47 µH buck / 1.5 µH boost inductors and 10 µF ceramic output capacitors. |
Applications
| Client SSD Power Management | In-Vehicle Infotainment SoC Supply |
|---|---|
Use Scenario: Powering NAND controller, DRAM cache, and PCIe PHY in enterprise/client SSDs with strict thermal and size constraints. IC Role / Device Role / Timing Role: Primary multi-rail PMIC delivering 1.8V, 1.1V, 1.05V, 1.25V, and 12V rails with synchronized startup and independent fault handling. Use Value: Eliminates need for six discrete regulators and external sequencing logic; reduces solution area by >40% versus discrete implementation. |
Use Scenario: Supplying application processor, GPU, display interface, and audio codec in automotive head units with ASIL-B compatible monitoring. IC Role / Device Role / Timing Role: Configurable power sequencer ensuring correct voltage ramp order (e.g., AVDD before I/O) and fast recovery from brownout events. Use Value: Enables compliance with AEC-Q100 Grade 2 (–40°C to +105°C ambient) via 125°C junction rating and thermal shutdown. |
| Portable Handheld Security Camera | Gaming Machine Mainboard |
Use Scenario: Battery-powered security camera requiring long idle time, instant wake-up, and flash memory programming voltage. IC Role / Device Role / Timing Role: Dual-mode PMIC: normal mode powers image sensor and ISP; standby mode drops core rails to 0.8V while retaining RTC and motion-detect logic. Use Value: 200 µA total quiescent current extends battery life to >6 months in motion-triggered recording mode. |
Use Scenario: Powering FPGA, DDR4 memory, and video encoder in arcade gaming hardware with burst-mode GPU loads. IC Role / Device Role / Timing Role: High-transient-response buck regulator (Buck4, 3A) for GPU core supply; boost rail for HDMI hot-plug detection circuitry. Use Value: Ultra-fast load transient response (<10 µs recovery) prevents frame drop during rapid GPU clock scaling. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multi-rail PMIC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MPQ4572GQ-AEC1-Z | Four buck + one boost; no EEPROM; fixed sequencing; AEC-Q100 qualified; 2.5 MHz switching. | Lacks runtime reconfiguration and fine-grained sequencing control; suited for cost-sensitive automotive modules where firmware updates are rare. | Choose MPQ4572GQ-AEC1-Z only if EEPROM programmability and I²C-based dynamic voltage scaling are unnecessary. |
| TPS65917A1ZWSR | Six buck + one boost; integrated LDOs; TI's PMBus interface; no HyperLight Load®; larger 48-pin QFN. | Higher integration (LDOs) but lower light-load efficiency (350 µA IQ); PMBus requires different host driver stack than I²C. | Select TPS65917A1ZWSR when LDO rails are needed alongside bucks and PMBus ecosystem compatibility is prioritized over minimal quiescent current. |
Compared with MPQ4572GQ-AEC1-Z and TPS65917A1ZWSR, the MIC7400YFL-TR uniquely combines EEPROM-based field programmability, sub-250 µA quiescent current across all rails, and adaptive on-time control for sub-10 µs transient response-making it optimal for SSDs and portable infotainment where firmware agility and battery life are decisive.
Availability
MIC7400YFL-TR is available at Aetrix Electronics and suitable for client SSDs, in-vehicle infotainment systems, portable security cameras, and gaming machine mainboards requiring stable component supply, long-term lifecycle assurance, and traceable sourcing.
Supply support for MIC7400YFL-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 broad industrial, automotive, and computing market presence.
The MIC7400YFL-TR belongs to Microchip's configurable PMIC product line, designed specifically for space-constrained, multi-rail applications in SSDs, infotainment, and portable multimedia devices demanding high integration and runtime programmability.
FAQ
What is the maximum output current supported by each buck regulator in the MIC7400YFL-TR?
Each of the five synchronous buck regulators in the MIC7400YFL-TR supports up to 3A continuous output current. Buck4 is rated for 4.88–7.32A current limit (typical 6.1A), while Bucks 1–3 and 5 are rated for 3.075–5.125A (typical 4.1A), as specified in Table 1-1 of DS20005887A. These limits are programmable via I²C registers and validated across –40°C to +125°C junction temperature.
Does the MIC7400YFL-TR support true hardware-based power sequencing without I²C intervention?
Yes, the MIC7400YFL-TR supports autonomous hardware sequencing via its internal sequence controller and programmable delay timers. Once configured via I²C, the device executes precise, repeatable power-up/down sequences-including per-rail enable timing (0.96–1.04 ms resolution), soft-start ramp control, and voltage hold-off-without ongoing host processor involvement. The STBY pin and POR signal further enable deterministic state transitions independent of software.
Can the MIC7400YFL-TR generate a 12V output for NAND flash programming?
Yes, the MIC7400YFL-TR's integrated boost regulator supports an output voltage range of 7V to 14V, with 12V explicitly validated in the datasheet's electrical characteristics table (DS20005887A-page 5). At 12V output, it delivers up to 200 mA with 85% typical efficiency at 1 mA load and includes output disconnect to prevent backfeed during shutdown-meeting NAND flash Vpp requirements.
What is the purpose of the VSLT pin on the MIC7400YFL-TR?
The VSLT (POR Selection Threshold) pin on the MIC7400YFL-TR selects between two POR voltage thresholds: a high-threshold mode (2.6–3.7 V) when VSLT = HIGH, and a low-threshold mode (2.5–3.6 V) when VSLT = LOW. This allows system designers to align the MIC7400YFL-TR's power-on reset behavior with the host SoC's supply tolerance, ensuring reliable boot sequencing across varying input rail stability profiles.
Is the MIC7400YFL-TR pin-compatible with other members of the MIC74xx family?
No, the MIC7400YFL-TR is not pin-compatible with other MIC74xx variants such as MIC7401 or MIC7402. While sharing the same 36-pin FQFN package and core architecture, pin assignments for SWx, PVINx, and OUTx channels differ across the family to accommodate variant-specific channel counts and feature sets. Layout reuse requires verification against each part's respective pin function table.
MIC7400YFL-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)
MIC7400YFL-TR FAQ
1.How can I place an order for MIC7400YFL-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC7400YFL-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 MIC7400YFL-TR reliable?
The price and inventory of MIC7400YFL-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC7400YFL-TR is usually 5 days.
3.What payment methods are accepted for MIC7400YFL-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC7400YFL-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC7400YFL-TR?
MIC7400YFL-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC7400YFL-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 MIC7400YFL-TR?
For technical support, including MIC7400YFL-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC7400YFL-TR requirements.
6.How does Aetrix verify that MIC7400YFL-TR is sourced from the original manufacturer or authorized distributors?
All MIC7400YFL-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 MIC7400YFL-TR meets industry standards.
7.What is the process for return or replacement of MIC7400YFL-TR?
All MIC7400YFL-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC7400YFL-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 MIC7400YFL-TR part is unused and in its original packaging.
Return procedure for MIC7400YFL-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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