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Microchip Technology MIC23031-FYMT-TR
- Part No.:
- MIC23031-FYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC23031-FYMT-TR.pdf
- Description:
- IC REG BUCK 1.5V 400MA 6TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,755
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Product details
Overview
MIC23031-FYMT-TR from Microchip Technology is a 1.5V fixed-output, 4 MHz synchronous buck regulator delivering up to 400 mA output current with HyperLight Load® mode for ultra-fast transient response and high light-load efficiency. It operates from 2.7V to 5.5V input, achieves 93% peak efficiency, and targets core voltage regulation in space-constrained portable electronics.
For engineers reviewing the MIC23031-FYMT-TR datasheet, MIC23031-FYMT-TR pinout, MIC23031-FYMT-TR application, or MIC23031-FYMT-TR equivalent, key selection criteria include its 1.5V fixed output, 21 µA quiescent current, 4 MHz PWM operation, 1.6 mm × 1.6 mm TDFN package, and HyperLight Load® architecture enabling sub-20 mVPP ripple across load range.
Technical Context
The MIC23031-FYMT-TR implements a proprietary HyperLight Load® control scheme combining minimum on-time/off-time pulse frequency modulation (PFM) at light loads and fixed 4 MHz PWM in continuous conduction mode (CCM). Its integrated PMOS/NMOS synchronous rectifier enables low RDS(ON) (0.65 Ω / 0.8 Ω) and eliminates external diode losses.
This architecture delivers 88% efficiency at 1 mA while maintaining tight output voltage accuracy (±2.5%) and ultra-low output ripple - 20 mVPP in HyperLight Load® mode and only 3 mV in full PWM mode - using minimal external components (1.0 µH inductor, 2.2 µF ceramic capacitor).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.5 V ±2.5% - eliminates need for external feedback resistors; ensures stable core rail for low-voltage processors. |
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion (3.0–4.2 V), USB 5 V, and multi-cell alkaline inputs without pre-regulation. |
| Max Output Current | 400 mA - sufficient for ARM Cortex-M cores, Wi-Fi SoCs, and sensor hubs in portable devices. |
| Switching Frequency | 4 MHz nominal - enables use of sub-1 mm height inductors (≥0.47 µH) and small ceramic capacitors (≥2.2 µF). |
| Quiescent Current | 21 µA typical - extends battery life in always-on subsystems (e.g., GPS tracking, BLE wake-up circuits). |
| Shutdown Current | 0.01 µA - reduces system standby power to negligible levels when disabled via EN pin. |
| Output Ripple | 20 mVPP (HyperLight Load®), 3 mV (PWM) - meets stringent noise requirements for RF and analog circuitry without added filtering. |
Pinout & Package
Package: 6-Lead TDFN (1.6 mm × 1.6 mm, MT suffix), ePAD exposed thermal pad connected to PGND for enhanced thermal performance and EMI reduction.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Input Power Supply | Accepts 2.7–5.5 V; requires ≥2.2 µF ceramic bypass capacitor placed adjacent to PGND for high-frequency noise suppression. |
| 2 SW | Power Switch Node | Drives external inductor; high dv/dt node requiring short, isolated routing away from sensitive analog traces. |
| 3 SNS | Output Voltage Sense | Direct connection to VOUT near output capacitor; critical for accurate regulation and low-noise feedback path. |
| 4 EN | Enable Control Input | Logic-high (>0.9 V) enables regulation; logic-low (<0.5 V) shuts down device to 0.01 µA; must not be left floating. |
| 5 AGND | Analog Ground Reference | Low-noise ground return for internal error amplifier and reference; separate from PGND to avoid switching noise coupling. |
| 6 PGND | Power Ground Return | High-current return path for MOSFETs and inductor; connects to ePAD for optimal thermal dissipation and EMI control. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® Mode | Enables PFM operation below ~4–70 mA (inductor-dependent), sustaining >88% efficiency at 1 mA while minimizing output ripple. |
| Synchronous Rectification | Integrated PMOS high-side and NMOS low-side switches eliminate external Schottky diode, reducing conduction loss and board area. |
| Ultra-Fast Transient Response | Stabilizes within <10 µs under 100 mA step load changes - essential for burst-mode processor cores and RF transceivers. |
| Small Solution Size | Requires only three external components (inductor, input/output caps); fits in <2.5 mm² footprint with sub-1 mm profile. |
| Thermal Robustness | Rated for –40°C to +125°C junction temperature; 92.4°C/W θJA enables 400 mA operation without heatsink in typical PCB layouts. |
Applications
| Mobile Handsets | Portable Navigation Devices (GPS) |
|---|---|
|
Use Scenario: Powering application processor I/O and memory interface rails in compact smartphone designs. IC Role / Device Role / Timing Role: Primary 1.5V core regulator supplying SoC subsystems with fast dynamic voltage scaling support. Use Value: HyperLight Load® maintains >85% efficiency during idle/sleep states, extending talk time by up to 12% versus conventional buck regulators. |
Use Scenario: Delivering clean, low-noise 1.5V supply to GPS baseband ICs and RF front-end modules. IC Role / Device Role / Timing Role: Low-ripple DC/DC converter ensuring stable clock generation and minimal phase noise in GNSS receivers. Use Value: 3 mV output ripple in PWM mode prevents spurious emissions that degrade C/N0 ratio and positioning accuracy. |
| Wi-Fi/WiMax Modules | USB-Powered Devices |
|
Use Scenario: Regulating power for 2.4/5 GHz WLAN transceivers operating from USB 5 V input. IC Role / Device Role / Timing Role: High-frequency buck converter rejecting USB bus noise while supporting burst transmit current peaks up to 400 mA. Use Value: 4 MHz switching avoids interference with 2.4 GHz ISM band harmonics; 21 µA IQ minimizes parasitic drain during link sleep. |
Use Scenario: Enabling self-powered USB peripherals (e.g., HID keyboards, audio adapters) from 5 V bus without external LDO. IC Role / Device Role / Timing Role: Efficient step-down regulator converting USB 5 V to 1.5 V for microcontroller and sensor interfaces. Use Value: 93% peak efficiency reduces thermal load in sealed enclosures; shutdown current <10 nA preserves host suspend state integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC23051-FYMT-TR | Same 1.5V fixed output, but rated for 600 mA and includes integrated soft-start timer; higher RDS(ON) (0.85 Ω) reduces light-load efficiency. | Better suited for higher-current loads (e.g., FPGA I/O banks); less optimal for ultra-low-IQ battery monitoring circuits. | Select MIC23051-FYMT-TR only if >400 mA output capability is required; otherwise MIC23031-FYMT-TR offers superior light-load efficiency and smaller solution size. |
| TPS62231DRVR | 1.5V fixed, 400 mA, 3.6 MHz; lacks HyperLight Load® - uses DCS-Control™ with 25 µA IQ and 15 mVPP ripple at light loads. | Compatible in footprint (2 mm × 2 mm WSON), but requires larger output capacitance (4.7 µF) to match ripple performance. | Choose TPS62231DRVR if TI ecosystem compatibility or automotive AEC-Q200 qualification is mandatory; MIC23031-FYMT-TR provides lower IQ and better ripple with smaller caps. |
Compared with MIC23051-FYMT-TR and TPS62231DRVR, the MIC23031-FYMT-TR delivers the lowest quiescent current (21 µA vs. 25–30 µA), smallest package (1.6 mm² vs. 2.0–4.0 mm²), and lowest output ripple in light-load conditions - making it optimal for battery-sensitive, space-constrained portable applications where efficiency below 10 mA dominates runtime.
Availability
MIC23031-FYMT-TR is available at Aetrix Electronics and suitable for mobile handsets, portable navigation devices, and USB-powered peripherals requiring stable component supply, long-term lifecycle assurance, and consistent parametric performance across production batches.
Supply support for MIC23031-FYMT-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 Inc. is a leading provider of microcontrollers, analog devices, and power management ICs, headquartered in Chandler, Arizona, with global design and manufacturing operations.
The MIC23031 product line delivers ultra-compact, high-efficiency DC/DC buck regulators optimized for battery-powered portable electronics - emphasizing minimal solution size, ultra-low quiescent current, and fast transient response for modern low-voltage SoCs.
FAQ
What is the output voltage tolerance of the MIC23031-FYMT-TR?
The MIC23031-FYMT-TR has a fixed 1.5 V output with ±2.5% accuracy over temperature and line/load conditions, as specified in the Electrical Characteristics table (VOUT = –2.5% to +2.5%). This tolerance applies across the full operating range of –40°C to +125°C junction temperature and 2.7 V to 5.5 V input voltage, ensuring reliable core rail regulation for precision analog and digital circuits without external trimming.
Does the MIC23031-FYMT-TR require an external feedback resistor network?
No, the MIC23031-FYMT-TR does not require external feedback resistors because it is a fixed-output variant configured for 1.5 V. Unlike adjustable versions (e.g., MIC23031-AYMT-TR), the FYMT-TR integrates internal feedback and reference circuitry - simplifying layout, reducing BOM count, and eliminating resistor tolerance errors that affect output accuracy.
How does the HyperLight Load® mode improve efficiency at light loads in the MIC23031-FYMT-TR?
The HyperLight Load® mode in the MIC23031-FYMT-TR uses pulse frequency modulation (PFM) with minimum on-time/off-time control to reduce switching activity at light loads. This cuts gate drive and transition losses, enabling 88% efficiency at 1 mA - significantly higher than standard PWM-only regulators. The mode automatically transitions to 4 MHz PWM above ~4–70 mA (depending on inductor value), maintaining high efficiency across the full 0–400 mA range.
What is the recommended inductor value for the MIC23031-FYMT-TR in a typical 1.5V application?
Microchip recommends a 1.0 µH inductor for balanced performance in most MIC23031-FYMT-TR applications - providing optimal trade-offs between transient response, output ripple, and efficiency. Inductors as low as 0.47 µH improve transient speed, while values up to 4.7 µH reduce ripple and enable deeper PFM operation. All inductors must support ≥400 mA saturation current and use low-DCR construction (e.g., ≤120 mΩ) to preserve efficiency.
Can the MIC23031-FYMT-TR operate with a 2.2 µF output capacitor?
Yes, the MIC23031-FYMT-TR is explicitly designed to be stable with a minimum 2.2 µF X5R/X7R ceramic output capacitor, as confirmed in Section 5.4 (Compensation) and Figure 5-1 (Efficiency under Load). Using 2.2 µF enables the smallest possible solution size and height (<1 mm), though increasing capacitance to 4.7 µF further reduces output ripple and improves load transient recovery - both values are fully supported per datasheet specifications.
MIC23031-FYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- HyperLight Load®
- Package/Case:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.5V
- Voltage - Output (Max):
- -
- Current - Output:
- 400mA
- Frequency - Switching:
- 4MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-TMLF® (1.6x1.6)
MIC23031-FYMT-TR FAQ
1.How can I place an order for MIC23031-FYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23031-FYMT-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 MIC23031-FYMT-TR reliable?
The price and inventory of MIC23031-FYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23031-FYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC23031-FYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23031-FYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23031-FYMT-TR?
MIC23031-FYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23031-FYMT-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 MIC23031-FYMT-TR?
For technical support, including MIC23031-FYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23031-FYMT-TR requirements.
6.How does Aetrix verify that MIC23031-FYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23031-FYMT-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 MIC23031-FYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC23031-FYMT-TR?
All MIC23031-FYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23031-FYMT-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 MIC23031-FYMT-TR part is unused and in its original packaging.
Return procedure for MIC23031-FYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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