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Microchip Technology MIC2225-GFYMT-TR
- Part No.:
- MIC2225-GFYMT-TR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-UFDFN, 10-TMLF®
- Datasheet:
-
MIC2225-GFYMT-TR.pdf
- Description:
- IC REG DL BUCK/LNR 2MHZ 10TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,210
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Product details
Overview
MIC2225-GFYMT-TR from Micrel is a dual-output power management IC integrating a 2MHz 600mA synchronous buck regulator and a 300mA low-dropout linear regulator (LDO), both operating from 2.7V–5.5V input. It delivers fixed 1.8V (buck) and 1.5V (LDO) outputs in a 10-pin 2mm × 2mm Thin MLF® package, targeting core/I/O rail generation for application processors and camera DSPs in portable electronics.
For engineers reviewing the MIC2225-GFYMT-TR datasheet, MIC2225-GFYMT-TR pinout, MIC2225-GFYMT-TR application, or MIC2225-GFYMT-TR equivalent, key selection criteria include its dual-rail fixed-voltage configuration, ultra-low noise LDO output (470 µVRMS), 2.2 µF ceramic capacitor compatibility, thermal shutdown protection, and –40°C to +125°C junction temperature range.
Technical Context
The MIC2225-GFYMT-TR implements independent PWM and LDO regulation paths with separate enable controls (EN and ENLDO), allowing asynchronous power sequencing. Its buck stage uses internal P-channel and N-channel MOSFETs with 100% duty cycle capability and 0.4 Ω typical ON-resistance per switch.
The LDO section features 210 mV dropout at 300 mA, 43 dB PSRR at 1 kHz, and 470 µVRMS integrated output noise (10 Hz–100 kHz). Both regulators share AVIN/BIAS biasing architecture and employ separate ground paths (AGND/PGND) to minimize coupling between analog control and high-current switching domains.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, Li-polymer, and regulated 3.3 V/5 V rails. |
| Buck Output | Fixed 1.8 V ±2% - suitable for core voltage of low-power application processors. |
| LDO Output | Fixed 1.5 V ±2% - provides clean I/O or interface supply with 210 mV dropout at full load. |
| Switching Frequency | 2 MHz ±10% - enables use of small 2.2 µH inductors and reduces EMI in compact layouts. |
| Efficiency | >95% at 100 mA (VIN = 3.6 V) - minimizes thermal rise and extends battery life in portable devices. |
| Output Capacitor | Stable with 2.2 µF ceramic - eliminates need for large electrolytics; simplifies layout and improves reliability. |
| Quiescent Current | <5 µA in shutdown (both regulators disabled) - preserves battery charge during deep sleep modes. |
Pinout & Package
Package: 10-pin 2 mm × 2 mm Thin MLF® (Pb-free, NiPdAu lead finish, halogen-free mold compound), junction temperature range –40°C to +125°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND | Analog ground reference | Return path for feedback, bias, and LDO control circuitry; must be isolated from PGND to prevent noise coupling. |
| 2 LDO | LDO output terminal | Delivers regulated 1.5 V; requires direct connection to 2.2 µF output capacitor with minimal trace inductance. |
| 3 BIAS | Internal bias supply node | Powered via internal 6 Ω resistor from AVIN; bypassed with 0.1 µF capacitor to suppress high-frequency ripple. |
| 4 AVIN | Analog supply input | Provides power to LDO and control circuitry; must be tied to VIN but routed separately to reduce switching noise injection. |
| 5 FB | Buck feedback input | Internally connected to 1.8 V output for fixed-voltage operation; no external divider required. |
| 6 EN | Buck enable input | Logic-compatible control (VIL ≤ 0.2 V, VIH ≥ 1.0 V); disables buck stage and reduces IQ to <5 µA. |
| 7 ENLDO | LDO enable input | Independent logic-level control; shuts down LDO with <5 µA quiescent current when pulled low. |
| 8 VIN | Main power input | Supplies buck switches and drivers; requires local 1 µF ceramic bypass to PGND for high-frequency stability. |
| 9 SW | Switch node output | Connects to inductor; carries high di/dt PWM current; must be kept short and away from sensitive analog traces. |
| 10 PGND | Power ground return | High-current return path for buck stage; forms tight loop with VIN and SW to minimize EMI radiation. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise LDO | 470 µVRMS output noise (10 Hz–100 kHz) enables use in noise-sensitive analog/RF subsystems without additional filtering. |
| Integrated MOSFETs | Eliminates external high-side/low-side FETs and gate drivers - reduces BOM count and PCB area by ~30% vs discrete solutions. |
| Thermal & current protection | Auto-recovery thermal shutdown (160°C trip, 137°C hysteresis) and cycle-by-cycle current limiting prevent damage under overload or fault conditions. |
| Small footprint | 2 mm × 2 mm Thin MLF® package occupies only 4 mm² - ideal for space-constrained mobile and wearable applications. |
| Fast transient response | Capable of maintaining regulation during 100 mA load steps with <50 µs turn-on time - supports dynamic DVFS in application processors. |
Applications
| Smartphone Application Processor Core Supply | Digital Camera DSP Power Rail |
|---|---|
Use Scenario: Powers ARM-based application processor core requiring stable 1.8 V at up to 600 mA with fast load transients during burst-mode operation. IC Role / Device Role / Timing Role: Primary buck regulator supplies core voltage; LDO provides auxiliary 1.5 V rail for memory interface or sensor interface logic. Use Value: Dual-rail integration eliminates two discrete regulators, reducing solution size by 40% while maintaining <2% output accuracy across –40°C to +125°C. | Use Scenario: Supplies image signal processor (ISP) and auto-focus controller in compact digital cameras with strict EMI and noise budgets. IC Role / Device Role / Timing Role: Buck delivers main 1.8 V domain; LDO powers 1.5 V analog front-end with 43 dB PSRR at 1 kHz to reject switching noise. Use Value: 470 µVRMS LDO noise ensures clean clocking and ADC reference for sub-12-bit image quality without added ferrite beads or LC filters. |
| USB Peripheral Hub Controller | Portable Medical Sensor Node |
Use Scenario: Powers USB 2.0 hub controller IC and associated level shifters in battery-powered docking stations. IC Role / Device Role / Timing Role: Provides 1.8 V core and 1.5 V I/O rails from single 3.3 V or 5 V input; EN/ENLDO allow independent power gating per function block. Use Value: Independent enable pins support USB suspend/resume sequencing - reduces system standby current to <5 µA when both regulators are disabled. | Use Scenario: Powers low-power MCU, biosensor analog front-end, and BLE radio in wearable health monitors. IC Role / Device Role / Timing Role: Buck supplies MCU core; LDO powers precision analog sensor interface with ultra-low noise and tight load regulation (±0.7% from 100 µA to 300 mA). Use Value: Stable 1.5 V LDO output with ±3% accuracy over full temperature range ensures consistent sensor biasing and ADC reference integrity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output DC-DC + LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231RGTR | Single 600 mA buck only (no integrated LDO); requires external LDO for second rail. | Lacks integrated LDO - increases BOM count and board area; suitable only when LDO requirements are minimal or externally managed. | Select if system already includes a dedicated low-noise LDO and only needs buck efficiency optimization. |
| MAX8640YETA+ | 2.25 MHz dual buck (no LDO); 1.8 V/1.5 V fixed outputs; same 2 mm × 2 mm TDFN package. | Higher switching frequency but no LDO - cannot replace MIC2225-GFYMT-TR's noise-sensitive 1.5 V rail without adding external linear regulation. | Choose when EMI filtering is prioritized over LDO noise performance and board space allows separate LDO placement. |
Compared with TPS62231RGTR and MAX8640YETA+, the MIC2225-GFYMT-TR uniquely integrates a low-noise 300 mA LDO alongside its buck regulator in the same 2 mm × 2 mm footprint - eliminating external components needed for clean auxiliary rails in portable medical and imaging systems.
Availability
MIC2225-GFYMT-TR is available at Aetrix Electronics and suitable for smartphone power management, digital camera DSP supplies, USB peripheral hubs, portable medical sensors, and wearable electronics requiring stable component supply across industrial temperature ranges.
Supply support for MIC2225-GFYMT-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
Micrel Inc. was a U.S.-based semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC2225 product line was designed for ultra-compact, high-efficiency dual-rail power delivery in battery-powered portable electronics - emphasizing low noise, small footprint, and wide temperature operation.
FAQ
What are the fixed output voltages of the MIC2225-GFYMT-TR?
The MIC2225-GFYMT-TR provides fixed 1.8 V from its synchronous buck regulator and fixed 1.5 V from its integrated LDO. These values are laser-trimmed at wafer test and specified with ±2% tolerance at 50 mA load and ±3% over the full –40°C to +125°C junction temperature range. No external feedback resistors are required for either output.
Does the MIC2225-GFYMT-TR require external MOSFETs for the buck stage?
No, the MIC2225-GFYMT-TR integrates both high-side P-channel and low-side N-channel power MOSFETs internally. This eliminates the need for external switches, gate drivers, or bootstrap components - reducing total solution size and simplifying design validation for portable applications where board area is constrained.
Can the MIC2225-GFYMT-TR operate with a 2.2 µF output capacitor on both rails?
Yes, the MIC2225-GFYMT-TR is optimized for stability with 2.2 µF ceramic output capacitors on both the buck and LDO outputs. The buck stage uses Type III internal compensation tuned for this value, and the LDO maintains regulation with 2.2 µF while delivering 300 mA with <0.7% load regulation - enabling consistent performance without capacitor derating or complex tuning.
What is the maximum allowable input voltage for the MIC2225-GFYMT-TR?
The absolute maximum input voltage rating for the MIC2225-GFYMT-TR is +6 V on the VIN pin. However, the recommended operating range is 2.7 V to 5.5 V. Exceeding 5.5 V may trigger overvoltage protection or cause permanent damage, and operation above 6 V violates absolute maximum ratings and risks device failure.
How does the MIC2225-GFYMT-TR handle thermal overload conditions?
The MIC2225-GFYMT-TR includes thermal shutdown protection that activates at 160°C junction temperature, with 23°C hysteresis (re-enabling at ~137°C). During shutdown, both regulators disable automatically and quiescent current drops below 5 µA. This self-protecting behavior prevents irreversible damage during sustained overload or poor heatsinking in compact enclosures.
MIC2225-GFYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-UFDFN, 10-TMLF®
- Packaging:
- Cut Tape (CT)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- 1.8V, 600mA
- Voltage/Current - Output 2:
- 1.5V, 300mA
- Voltage/Current - Output 3:
- -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TMLF® (2x2)
MIC2225-GFYMT-TR FAQ
1.How can I place an order for MIC2225-GFYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2225-GFYMT-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 MIC2225-GFYMT-TR reliable?
The price and inventory of MIC2225-GFYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2225-GFYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC2225-GFYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2225-GFYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2225-GFYMT-TR?
MIC2225-GFYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2225-GFYMT-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 MIC2225-GFYMT-TR?
For technical support, including MIC2225-GFYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2225-GFYMT-TR requirements.
6.How does Aetrix verify that MIC2225-GFYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC2225-GFYMT-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 MIC2225-GFYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC2225-GFYMT-TR?
All MIC2225-GFYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2225-GFYMT-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 MIC2225-GFYMT-TR part is unused and in its original packaging.
Return procedure for MIC2225-GFYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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