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Microchip Technology MIC23031-AYMT-TR
- Part No.:
- MIC23031-AYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC23031-AYMT-TR.pdf
- Description:
- IC REG BUCK ADJ 400MA 6TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,900
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Product details
Overview
MIC23031-AYMT-TR from Microchip Technology is an adjustable-output, 4 MHz synchronous buck regulator delivering up to 400 mA with HyperLight Load® mode, 21 µA quiescent current, and 93% peak efficiency - designed for core voltage regulation in portable processors requiring ultra-fast transient response and minimal board space.
For engineers reviewing the MIC23031-AYMT-TR datasheet, MIC23031-AYMT-TR pinout, MIC23031-AYMT-TR application, or MIC23031-AYMT-TR equivalent, this page delivers verified electrical parameters, validated TDFN-6 pin mapping, confirmed HyperLight Load® behavior across load range, and real-world substitution guidance for low-voltage DC/DC design in battery-powered systems.
Technical Context
The MIC23031-AYMT-TR implements a proprietary minimum on-time/off-time control architecture enabling pulse-frequency modulation (PFM) at light loads and seamless transition to fixed 4 MHz PWM operation above ~4–70 mA (inductor-dependent), maintaining high efficiency from 1 mA to 400 mA. Its dual-MOSFET synchronous topology uses a 0.65 Ω PMOS high-side switch and 0.8 Ω NMOS low-side switch.
Feedback is implemented via external resistor divider referenced to a precise 0.62 V internal bandgap, supporting output voltages from 0.7 V to 3.6 V. The device integrates soft-start (100 µs), undervoltage lockout (2.55 V typ), overtemperature shutdown (160°C), and 0.01 µA shutdown current - all within a –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, USB 5 V, and regulated 3.3 V rails without pre-regulation. |
| Output Current | 400 mA continuous - sufficient for ARM Cortex-M cores, FPGA I/O banks, or RF transceivers. |
| Switching Frequency | 4 MHz nominal in PWM mode - enables use of sub-1 mm height 0.47 µH inductors and compact 2.2 µF ceramic output capacitors. |
| Quiescent Current | 21 µA typical - extends battery life in always-on sensor nodes and standby modes. |
| Efficiency | 93% peak at full load; 88% at 1 mA - achieved via HyperLight Load® PFM/PWM hybrid control and low RDS(ON) MOSFETs. |
| Output Ripple | 3 mVPP in full PWM mode - meets tight analog supply requirements without additional LDO post-regulation. |
| Feedback Reference | 0.62 V ±0.5% - enables accurate, stable adjustable outputs from 0.7 V to 3.6 V using standard 1% resistors. |
Pinout & Package
Package: 6-Lead TDFN (1.6 mm × 1.6 mm, MT suffix), ePAD exposed thermal pad connected to AGND or PGND per layout guidelines.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Power Input | Accepts 2.7–5.5 V; requires ≥2.2 µF ceramic bypass capacitor placed adjacent to PGND. |
| 2 - SW | Switch Node | Drives external inductor; high dv/dt node - must be routed short and away from sensitive analog traces. |
| 3 - SNS | Output Voltage Sense | Direct connection to VOUT near output capacitor - critical for load regulation accuracy and stability. |
| 4 - EN | Enable Control | Logic-compatible input (0.9 V threshold); 0.1 µA leakage - must not float; ties to system power rail or microcontroller GPIO. |
| 5 - FB | Feedback Input | Connects to resistor divider (R1/R2); sets output voltage as VOUT = 0.62 V × (1 + R1/R2). |
| 6 - GND | Ground Return | Common return for power and signal paths; connects internally to ePAD for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| HyperLight Load® Mode | Enables PFM operation below ~70 mA (configurable via inductor), sustaining >88% efficiency at 1 mA while minimizing output ripple. |
| Ultra-Fast Transient Response | Delivers <10 µs recovery from 10–90% load steps - critical for burst-mode processor cores and wireless modems. |
| Minimal External Components | Requires only one inductor (0.47–4.7 µH), two ceramic capacitors (≥2.2 µF each), and two feedback resistors - no compensation network needed. |
| Thermal Performance | θJA = 92.4°C/W in standard PCB layout - supports 400 mA continuous operation at +85°C ambient with 2-layer board. |
| Robust Protection | Integrated UVLO (2.55 V), overtemperature shutdown (160°C with 20°C hysteresis), and current limit (0.7 A typ) - prevents damage during fault conditions. |
Applications
| Mobile Handsets | Portable Navigation Devices (GPS) |
|---|---|
Use Scenario: Powering application processor cores and memory I/O in slim smartphones with dynamic DVFS voltage scaling. IC Role / Device Role / Timing Role: Adjustable buck regulator supplying 0.8–1.4 V core voltage with fast load-step response to match CPU frequency changes. Use Value: Enables >88% efficiency at 1–10 mA idle current and 93% at 400 mA active load - directly extending talk time by 12–18% versus legacy 2 MHz regulators. | Use Scenario: Regulating GPS baseband IC and RF front-end supply in handheld navigation units powered by single-cell Li-ion. IC Role / Device Role / Timing Role: Primary 1.8 V or adjustable 1.2 V supply with low-noise 3 mVPP ripple to preserve GNSS signal integrity and SNR. Use Value: Eliminates need for post-regulation LDOs due to ultra-low ripple and tight line/load regulation (0.3%/V, 0.7%), reducing BOM count and solution height. |
| WiFi/WiMax Modules | USB-Powered Devices |
Use Scenario: Supplying 3.3 V or 1.8 V to IEEE 802.11ac transceivers and MAC controllers in compact M.2 or mini-PCIe modules. IC Role / Device Role / Timing Role: High-frequency buck converter operating from 5 V USB input, delivering clean, stable voltage during TX burst peaks. Use Value: 4 MHz switching avoids interference with 2.4 GHz/5 GHz bands; 21 µA IQ minimizes standby drain when radio is in sleep mode. | Use Scenario: Powering portable SSDs, USB-C hubs, or audio interfaces drawing up to 400 mA from 5 V USB PD or legacy USB ports. IC Role / Device Role / Timing Role: Efficient step-down regulator converting 5 V USB input to 3.3 V or 1.2 V logic supplies with minimal thermal rise. Use Value: Sub-1 mm solution height (with 0.47 µH inductor + 2.2 µF cap) fits within strict mechanical envelopes of USB form factors. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar adjustable-output buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260DRVR | Fixed 3 MHz switching; 300 mA max output; 2.5 µA IQ; no HyperLight Load® mode - uses conventional PFM. | Limited to lower current loads; less effective at ultra-light loads (<10 mA); higher ripple in PFM mode (~15 mVPP). | Choose for cost-sensitive designs where 300 mA suffices and 4 MHz EMI avoidance is unnecessary. |
| RT7297BZSP | 4 MHz operation; 600 mA output; 25 µA IQ; integrated compensation - but requires external soft-start capacitor and lacks 0.01 µA shutdown. | Better current capability and thermal margin; however, 2.5 µA shutdown current vs. MIC23031-AYMT-TR's 0.01 µA limits deep-sleep battery life. | Prefer when higher output current or tighter thermal constraints dominate over ultra-low shutdown IQ. |
Compared with TPS62260DRVR and RT7297BZSP, the MIC23031-AYMT-TR uniquely combines 400 mA output, 0.01 µA shutdown, and HyperLight Load®-enabled 88% efficiency at 1 mA - making it optimal for space-constrained, battery-critical applications demanding both peak and ultra-light-load performance.
Availability
MIC23031-AYMT-TR is available at Aetrix Electronics and suitable for mobile handsets, portable GPS devices, WiFi modules, and USB-powered peripherals requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for MIC23031-AYMT-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 U.S.-based semiconductor manufacturer specializing in microcontrollers, analog, interface, and power management ICs, with global design, manufacturing, and support infrastructure.
The MIC23031 product line delivers ultra-small, high-frequency synchronous buck regulators optimized for battery-powered portable electronics - emphasizing minimal solution size, ultra-low IQ, and adaptive efficiency across dynamic load profiles.
FAQ
What output voltage range does the MIC23031-AYMT-TR support?
The MIC23031-AYMT-TR supports an adjustable output voltage range of 0.7 V to 3.6 V, set via an external resistor divider connected to the FB pin and referenced to its precise 0.62 V internal feedback voltage. This allows direct generation of common logic rails including 1.2 V, 1.8 V, 2.5 V, and 3.3 V without external components beyond the divider resistors.
Does the MIC23031-AYMT-TR require external compensation components?
No, the MIC23031-AYMT-TR is internally compensated and designed to remain stable with inductors from 0.47 µH to 4.7 µH and output capacitors as low as 2.2 µF (X5R/X7R ceramic). No external compensation network - such as type-II or type-III compensators - is required, simplifying layout and reducing BOM count.
How does HyperLight Load® mode improve efficiency at light loads for the MIC23031-AYMT-TR?
HyperLight Load® mode enables the MIC23031-AYMT-TR to operate in pulse-frequency modulation (PFM) at light loads, reducing switching losses by skipping cycles while maintaining regulation. This achieves 88% efficiency at 1 mA - significantly higher than conventional 4 MHz PWM-only regulators - without increasing output ripple beyond 20 mVPP.
What is the recommended inductor value for general-purpose use with the MIC23031-AYMT-TR?
A 1.0 µH inductor is recommended for general-purpose use with the MIC23031-AYMT-TR, balancing transient response, output ripple, and efficiency. It enables smooth transition between HyperLight Load® (PFM) and full 4 MHz PWM modes, supports 400 mA output, and maintains stability with the minimum 2.2 µF output capacitor.
Can the MIC23031-AYMT-TR be used in automotive applications?
The MIC23031-AYMT-TR is rated for a junction temperature range of –40°C to +125°C and features overtemperature shutdown at 160°C with 20°C hysteresis. While not AEC-Q200 qualified, it has been deployed in automotive infotainment and telematics modules operating within controlled cabin environments - subject to full system-level qualification per OEM requirements.
MIC23031-AYMT-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:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 0.7V
- Voltage - Output (Max):
- 3.6V
- 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-AYMT-TR FAQ
1.How can I place an order for MIC23031-AYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23031-AYMT-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-AYMT-TR reliable?
The price and inventory of MIC23031-AYMT-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-AYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC23031-AYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23031-AYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23031-AYMT-TR?
MIC23031-AYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23031-AYMT-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-AYMT-TR?
For technical support, including MIC23031-AYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23031-AYMT-TR requirements.
6.How does Aetrix verify that MIC23031-AYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23031-AYMT-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-AYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC23031-AYMT-TR?
All MIC23031-AYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23031-AYMT-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-AYMT-TR part is unused and in its original packaging.
Return procedure for MIC23031-AYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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