My Inquiry
My Account
Microchip Technology MIC23031-4YMT-TR
- Part No.:
- MIC23031-4YMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFDFN Exposed Pad, 6-TMLF®
- Datasheet:
-
MIC23031-4YMT-TR.pdf
- Description:
- IC REG BUCK 1.2V 400MA 6TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,270
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC23031-4YMT-TR from Microchip Technology is a fixed 1.2 V, 400 mA synchronous buck regulator with HyperLight Load® mode, operating from 2.7 V to 5.5 V input and delivering up to 93% efficiency at full load. It features 4 MHz PWM switching, 21 µA quiescent current, and ultra-low 20 mVPP output ripple in light-load mode-designed for core voltage regulation in space-constrained portable processors.
For engineers reviewing the MIC23031-4YMT-TR datasheet, MIC23031-4YMT-TR pinout, MIC23031-4YMT-TR application, or MIC23031-4YMT-TR equivalent, key selection considerations include its 1.2 V fixed output, 6-pin 1.6 mm × 1.6 mm TDFN package, –40°C to +125°C junction temperature range, and compatibility with sub-1 mm height power solutions using 0.47 µH inductors and 2.2 µF ceramic capacitors.
Technical Context
The MIC23031-4YMT-TR implements a proprietary HyperLight Load® control architecture combining minimum on/off-time pulse-frequency modulation (PFM) at light loads and fixed 4 MHz PWM at higher loads. Its integrated PMOS/NMOS synchronous switch pair enables high efficiency across 0–400 mA, with automatic transition between discontinuous and continuous conduction modes based on load, input voltage, and inductance.
This device uses analog ground (AGND) and power ground (PGND) separation to minimize noise coupling, employs internal 0.62 V reference for feedback accuracy, and integrates soft-start (100 µs), undervoltage lockout (2.55 V typ), and overtemperature shutdown (160°C) - all optimized for stable core rail delivery in battery-powered systems with fast transient demands.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2.5% - ensures precise core voltage compliance for low-voltage SoCs without external resistor network. |
| Max Output Current | 400 mA - supports processor cores, FPGAs, and RF ICs requiring stable mid-range current delivery. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V), USB 5 V, and regulated 3.3 V rails. |
| Switching Frequency | 4 MHz (PWM mode) - enables use of ultra-small inductors (≥0.47 µH) and minimizes EMI in compact layouts. |
| Quiescent Current | 21 µA - extends battery life in standby/sleep states without sacrificing startup speed or regulation accuracy. |
| Output Ripple | 20 mVPP (HyperLight Load®), 3 mV (full PWM) - maintains clean supply for noise-sensitive analog/RF blocks using minimal 2.2 µF output capacitance. |
| Junction Temp Range | –40°C to +125°C - qualified for industrial and automotive under-hood applications where thermal margin is critical. |
Pinout & Package
Package: 6-Lead TDFN (1.6 mm × 1.6 mm, MT suffix), ePAD exposed thermal pad connected to PGND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - VIN | Input 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 to avoid coupling into sensitive analog signals. |
| 3 - SNS | Output Voltage Sense | Direct connection to VOUT near output capacitor; enables accurate regulation by rejecting PCB trace IR drop. |
| 4 - EN | Enable Control | Logic-compatible input (0.9 V threshold); pulls to GND to achieve 0.01 µA shutdown current and eliminate standby drain. |
| 5 - AGND | Analog Ground Reference | Low-noise return path for internal error amplifier and reference; must be star-connected to central ground point, separate from PGND loop. |
| 6 - PGND | Power Ground Return | High-current return for MOSFET switching path; connects directly to ePAD and input/output capacitor grounds to minimize voltage spikes. |
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 light-load ripple. |
| Synchronous Buck Architecture | Integrated PMOS high-side and NMOS low-side switches eliminate external diode, reducing conduction loss and improving thermal performance. |
| Ultra-Fast Transient Response | Stabilizes within <10 µs after 100 mA step load change - critical for burst-mode CPU/GPU core voltage tracking. |
| Sub-1 mm Height Solution | Validated with 0.47 µH inductor and 2.2 µF ceramic capacitor - enables ultra-thin designs such as wearable sensors and slim mobile modules. |
| Thermal Protection | 160°C overtemperature shutdown with 20°C hysteresis prevents latch-up and ensures safe recovery during sustained overload or poor airflow conditions. |
Applications
| Mobile Handsets | Portable Navigation Devices (GPS) |
|---|---|
Use Scenario: Powering application processor cores and memory I/O rails in LTE/5G smartphones with dynamic DVFS scaling. IC Role / Device Role / Timing Role: Primary core voltage regulator delivering 1.2 V at up to 400 mA with adaptive PFM/PWM switching to match CPU load states. Use Value: 21 µA quiescent current extends standby time; 4 MHz switching allows use of 0603-size inductors, saving >30% board area versus 1 MHz alternatives. | Use Scenario: Supplying GNSS baseband SoC and RF front-end in handheld GPS units operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Fixed 1.2 V buck converter providing low-noise, thermally robust power under varying temperature and load conditions. Use Value: –40°C to +125°C rating ensures reliable cold-start and hot-environment operation; 20 mVPP ripple prevents GPS signal degradation in RF sections. |
| WiFi/WiMax Modules | Digital Cameras |
Use Scenario: Regulating power for IEEE 802.11ac/ax WLAN SoCs in compact IoT gateways and wireless access points. IC Role / Device Role / Timing Role: High-efficiency DC/DC stage converting 3.3 V or 5 V system rail to 1.2 V core voltage with minimal thermal rise in sealed enclosures. Use Value: 93% peak efficiency reduces self-heating; 4 MHz operation avoids interference with 2.4 GHz/5 GHz bands through spectral separation. | Use Scenario: Powering image signal processors (ISPs) and CMOS sensor interfaces in action cameras and drone gimbals. IC Role / Device Role / Timing Role: Compact, shock-resistant 1.2 V supply enabling rapid wake-from-sleep for burst capture sequences. Use Value: 100 µs soft-start prevents mechanical shutter jitter; 1.6 mm × 1.6 mm TDFN footprint fits within tight camera module height constraints (<1 mm). |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP16301T-120I/OT | Fixed 1.2 V, 300 mA, 2.5–5.5 V input, 2.2 MHz switching, no HyperLight Load® mode | Limited to lower current; lacks ultra-low-IQ and fast transient response needed for processor cores | Select when cost sensitivity outweighs efficiency and transient requirements; verify thermal derating at 400 mA. |
| TPS62231DRVR | Fixed 1.2 V, 400 mA, 2.05–6.0 V input, 3–4 MHz programmable frequency, 17 µA IQ, but no PFM mode below 10 mA | Higher input voltage range; slightly lower IQ but less efficient below 5 mA due to absence of dedicated light-load mode | Prefer for wider VIN flexibility and tighter output accuracy (±1%), but confirm ripple tolerance if operating near 1 mA average load. |
Compared with MCP16301T-120I/OT and TPS62231DRVR, the MIC23031-4YMT-TR uniquely combines 400 mA capability, 1.2 V fixed output, HyperLight Load® PFM, and 4 MHz operation in a 1.6 mm × 1.6 mm package-making it optimal for space- and efficiency-critical core rail applications where light-load battery life and fast load steps are design priorities.
Availability
MIC23031-4YMT-TR is available at Aetrix Electronics and suitable for mobile handsets, portable navigation devices, WiFi modules, and digital cameras requiring stable component supply with guaranteed long-term manufacturability and consistent parametric performance.
Supply support for MIC23031-4YMT-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 microcontroller, mixed-signal, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability semiconductor products.
The MIC23031 family is part of Microchip's high-frequency DC/DC regulator portfolio, designed specifically for ultra-compact, battery-powered portable electronics demanding high efficiency across wide load ranges and minimal solution footprint.
FAQ
What output voltage does the MIC23031-4YMT-TR provide?
The MIC23031-4YMT-TR provides a fixed 1.2 V output voltage with ±2.5% accuracy over temperature and line/load conditions. This is factory-trimmed and requires no external feedback resistors-unlike adjustable variants such as MIC23031-AYMT-TR. The 1.2 V rail is optimized for modern low-voltage processor cores and SoCs, and its stability is maintained via internal 0.62 V reference and precision sense circuitry in the MIC23031-4YMT-TR.
Does the MIC23031-4YMT-TR support both PWM and PFM modes?
Yes, the MIC23031-4YMT-TR automatically transitions between HyperLight Load® (PFM) mode at light loads and fixed-frequency 4 MHz PWM mode at higher loads. This hybrid operation sustains >88% efficiency at 1 mA (PFM) and peaks at 93% at full 400 mA (PWM). The crossover point depends on input voltage, output voltage, inductance, and load-typically ranging from ~4 mA (with 4.7 µH) to ~70 mA (with 1 µH)-all managed internally without external control in the MIC23031-4YMT-TR.
What is the recommended inductor value for the MIC23031-4YMT-TR?
Microchip recommends a 1.0 µH inductor for balanced performance across efficiency, transient response, and output ripple in the MIC23031-4YMT-TR. However, the device supports inductors from 0.47 µH to 4.7 µH: 0.47 µH improves transient response, 4.7 µH reduces ripple, and all values maintain stability with ≥2.2 µF X5R/X7R ceramic output capacitors. Inductor DCR should be minimized to preserve efficiency, especially above 100 mA, as specified in the MIC23031-4YMT-TR datasheet.
How does the MIC23031-4YMT-TR handle thermal management?
The MIC23031-4YMT-TR incorporates overtemperature shutdown at 160°C with 20°C hysteresis and leverages its 1.6 mm × 1.6 mm TDFN package with exposed thermal pad (ePAD) connected to PGND for effective heat dissipation. Its thermal resistance θJA is 92.4°C/W, and maximum power dissipation is limited by ambient temperature and layout. Proper PCB copper pour under the ePAD and short, low-impedance PGND connections are essential to maintain junction temperature ≤125°C in the MIC23031-4YMT-TR under full 400 mA load.
Can the MIC23031-4YMT-TR be used with a 2.2 µF output capacitor?
Yes, the MIC23031-4YMT-TR is explicitly designed and tested for stable operation with a minimum 2.2 µF ceramic output capacitor (X5R or X7R dielectric). Using this value achieves the specified 20 mVPP ripple in HyperLight Load® mode and 3 mV in full PWM mode while enabling sub-1 mm solution height. Larger capacitance (e.g., 4.7 µF) further reduces ripple and improves load transient response but increases footprint and cost-both validated in the MIC23031-4YMT-TR typical application circuits.
MIC23031-4YMT-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):
- 1.2V
- 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)
MIC23031-4YMT-TR FAQ
1.How can I place an order for MIC23031-4YMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC23031-4YMT-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 MIC23031-4YMT-TR reliable?
The price and inventory of MIC23031-4YMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC23031-4YMT-TR is usually 5 days.
3.What payment methods are accepted for MIC23031-4YMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC23031-4YMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC23031-4YMT-TR?
MIC23031-4YMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC23031-4YMT-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 MIC23031-4YMT-TR?
For technical support, including MIC23031-4YMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC23031-4YMT-TR requirements.
6.How does Aetrix verify that MIC23031-4YMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC23031-4YMT-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 MIC23031-4YMT-TR meets industry standards.
7.What is the process for return or replacement of MIC23031-4YMT-TR?
All MIC23031-4YMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC23031-4YMT-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 MIC23031-4YMT-TR part is unused and in its original packaging.
Return procedure for MIC23031-4YMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC23031-4YMT-TR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
Tech Hub
TTL and CMOS logic families differ in thresholds, loading, output drive, power and timing. This engineering guide compares 74HC and 74HCT, calculates noise margins and checks 3.3 V/5 V compatibility.
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
