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Microchip Technology MIC2225-4MYMT-TR
- Part No.:
- MIC2225-4MYMT-TR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-UFDFN, 10-TMLF®
- Datasheet:
-
MIC2225-4MYMT-TR.pdf
- Description:
- IC REG DL BUCK/LNR 2MHZ 10TMLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC2225-4MYMT-TR from Micrel is a dual-output power management IC integrating a 2MHz 600mA synchronous buck regulator and a 300mA low-dropout linear regulator, delivering fixed 1.2V and 2.8V outputs respectively. It operates from 2.7V–5.5V input, achieves >95% efficiency in PWM mode, supports ultra-fast transient response, and is stable with only 2.2µF ceramic output capacitors. It serves core and I/O rail generation for application processors and camera DSPs in space-constrained portable devices.
For engineers reviewing the MIC2225-4MYMT-TR datasheet, MIC2225-4MYMT-TR pinout, MIC2225-4MYMT-TR application, or MIC2225-4MYMT-TR equivalent, key selection criteria include its dual-rail fixed-voltage configuration, 10-pin 2mm×2mm Thin MLF® package, independent enable control (EN/ENLDO), thermal shutdown protection, and compatibility with standard 0.1µF BIAS and 2.2µF output capacitors.
Technical Context
The MIC2225-4MYMT-TR implements a constant-frequency 2MHz PWM architecture with fully integrated high-side P-channel and low-side N-channel MOSFETs, enabling 100% duty cycle operation for low-input-to-output voltage drop scenarios. Its analog control block is powered separately via AVIN/BIAS to minimize switching noise coupling into the LDO and feedback paths.
The LDO section features independent enable (ENLDO), 210mV dropout at 300mA, 470µVRMS output noise (10Hz–100kHz), and 43dB PSRR at 1kHz - all optimized for noise-sensitive analog and RF circuitry. Both regulators share thermal shutdown and current-limit protection but operate autonomously under separate logic enables.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Switching Frequency | 2MHz ±10% - enables compact external components (2.2µH inductor, 2.2µF output cap) and minimizes audible noise. |
| Buck Output | 1.2V fixed, ±2% tolerance at 100mA - precision core supply for application processors. |
| LDO Output | 2.8V fixed, ±2% tolerance at 100µA - stable I/O rail for camera interfaces or multimedia peripherals. |
| Max Buck Current | 600mA in PWM mode - sufficient for mid-tier application processor cores with dynamic load steps. |
| Max LDO Current | 300mA - supports multiple low-noise analog blocks without external buffering. |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion (3.0–4.2V) and USB 5V bus inputs. |
| Junction Temp Range | –40°C to +125°C - qualified for automotive infotainment and industrial handheld environments. |
Pinout & Package
Package: 10-pin 2mm × 2mm Thin MLF® (Pb-free, NiPdAu lead finish, halogen-free mold compound), 0.5mm pitch, exposed thermal pad.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND | Analog ground reference | Separate signal return path for feedback, bias, and LDO control-must be isolated from PGND to prevent noise coupling. |
| 2 LDO | LDO output terminal | Delivers regulated 2.8V; requires direct connection to 2.2µF ceramic capacitor with minimal trace length. |
| 3 BIAS | Internal bias supply node | Powered from AVIN via 6Ω resistor; must be decoupled with 0.1µF capacitor to AGND for stable reference operation. |
| 4 AVIN | Analog supply input | Provides power to LDO and control circuitry; tied directly to VIN but routed separately to reduce switching noise injection. |
| 5 FB | Feedback input | Internally connected to 1.2V output for fixed-voltage operation; no external divider required. |
| 6 EN | Buck regulator enable | Active-high logic input; <0.2V disables buck stage, reducing quiescent current to <5µA. |
| 7 ENLDO | LDO enable | Independent active-high logic input; <0.2V disables LDO, reducing its ground current to <5µA. |
| 8 VIN | Main power input | Supplies buck switches and drivers; requires local 1µF ceramic bypass to PGND near the pin. |
| 9 SW | Switch node | Connects to inductor; carries high di/dt PWM current-must be short, wide, and远离 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. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low noise LDO | 470µVRMS output noise (10Hz–100kHz) and 43dB PSRR at 1kHz-enables clean power for camera sensors and ADCs. |
| Integrated MOSFETs | On-chip P-channel high-side and N-channel low-side switches eliminate external FETs and gate drivers. |
| Stable with small caps | Guaranteed stability using only 2.2µF ceramic output capacitors-reduces board area and cost vs. larger electrolytics. |
| Independent dual enable | Separate EN and ENLDO pins allow sequenced power-up, dynamic rail disabling, and system-level power state control. |
| Thermal robustness | Thermal shutdown activates at 160°C with 23°C hysteresis-protects against sustained overload in sealed enclosures. |
Applications
| Smartphone Application Processor Core Supply | Digital Camera Sensor Bias Rail |
|---|---|
Use Scenario: Powering the 1.2V core domain of an ARM-based application processor during video capture and UI rendering. IC Role / Device Role / Timing Role: Primary DC/DC converter providing high-efficiency, dynamically responsive core voltage with fast load-step recovery. Use Value: Delivers 600mA peak current with <50µs turn-on time and >95% efficiency across 2.7–5.5V input range-extending battery life while maintaining SoC performance. | Use Scenario: Supplying clean 2.8V bias to CMOS image sensor analog front-end and ISP core during high-resolution still capture. IC Role / Device Role / Timing Role: Low-noise LDO output operating independently of buck switching activity to prevent pixel noise and banding artifacts. Use Value: Provides 300mA with 470µVRMS noise and 43dB PSRR at 1kHz-meeting sensor manufacturer's strict analog rail noise requirements. |
| USB Peripheral Hub I/O Rail | Portable Media Player Audio Codec Supply |
Use Scenario: Generating 2.8V I/O supply for a multi-port USB 2.0 hub IC powered from a 5V USB host port. IC Role / Device Role / Timing Role: Secondary LDO regulator delivering stable interface voltage while buck handles main system rail. Use Value: Enables independent LDO enable/disable for USB suspend/resume, reducing system standby current to <5µA when ports are inactive. | Use Scenario: Powering stereo audio DAC and headphone amplifier in a flash-based media player with Li-ion battery input. IC Role / Device Role / Timing Role: Dual-rail source supplying 1.2V digital core and 2.8V analog output stage from single battery source. Use Value: Eliminates need for discrete buck + LDO solution-reducing component count by 40% and PCB area by >30% in 2mm×2mm footprint. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-output power management applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231RGTR | Single-output 600mA buck only; no integrated LDO; 3MHz switching frequency; 1.2V fixed output. | Requires external LDO for second rail; higher switching frequency allows smaller inductors but increases EMI sensitivity. | Select when only one regulated rail is needed and board layout prioritizes minimal inductor size over dual-rail integration. |
| RT8059ZSP | Dual buck (not buck+LDO); 600mA/300mA outputs; 2MHz; 1.2V/2.8V fixed; 12-pin WDFN package. | Higher pin count and larger 3mm×3mm footprint; both outputs switch-unsuitable for noise-sensitive analog loads. | Select when both rails require high-efficiency switching and system noise budget permits dual-switcher operation. |
Compared with TPS62231RGTR and RT8059ZSP, the MIC2225-4MYMT-TR uniquely integrates a low-noise LDO alongside the buck regulator in a 2mm×2mm package-providing optimal trade-off between integration density, analog rail cleanliness, and design simplicity for portable multimedia systems.
Availability
MIC2225-4MYMT-TR is available at Aetrix Electronics and suitable for smartphone power management, camera module design, and USB peripheral development requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MIC2225-4MYMT-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 power management, timing, and interface ICs before its acquisition by Microchip Technology in 2015.
The MIC2225 product line was designed specifically for ultra-compact, high-efficiency dual-rail power delivery in battery-powered portable electronics-emphasizing low quiescent current, small external components, and robust thermal performance.
FAQ
What output voltages does the MIC2225-4MYMT-TR provide?
The MIC2225-4MYMT-TR provides two fixed output voltages: 1.2V from its synchronous buck regulator and 2.8V from its integrated LDO. These values are factory-trimmed and specified with ±2% tolerance at 100mA load and 25°C, and ±3% over the full –40°C to +125°C junction temperature range. No external resistors are required to set these outputs.
Can the MIC2225-4MYMT-TR operate with a 2.5V input supply?
No, the MIC2225-4MYMT-TR requires a minimum input voltage of 2.7V per its absolute operating rating. At 2.5V, the device will not start up due to UVLO activation (rising threshold = 2.45–2.65V). For sub-2.7V battery operation, consider pre-regulation or alternative regulators with lower VIN minima.
How is thermal performance managed in the MIC2225-4MYMT-TR?
The MIC2225-4MYMT-TR incorporates internal thermal shutdown that activates at 160°C junction temperature with 23°C hysteresis. Its 10-pin Thin MLF® package features an exposed thermal pad, and the datasheet specifies θJA = 90°C/W. Proper PCB layout-including copper pour under the pad and thermal vias-is essential to maintain safe operation at full 600mA buck load.
Does the MIC2225-4MYMT-TR support power sequencing between its two outputs?
Yes, the MIC2225-4MYMT-TR supports controlled sequencing via independent enable pins: EN controls the buck regulator and ENLDO controls the LDO. Driving EN high before ENLDO ensures the 1.2V core rail powers up first, followed by the 2.8V I/O rail-a common requirement for application processors and camera ISPs.
What capacitor types are recommended for the MIC2225-4MYMT-TR outputs?
The MIC2225-4MYMT-TR is optimized for X5R or X7R dielectric ceramic capacitors. A 2.2µF, 6.3V X5R capacitor is required on both the buck output (LDO pin) and LDO output (LDO pin), with additional 0.1µF ceramic on BIAS. Y5V dielectrics are explicitly discouraged due to severe capacitance loss over temperature and voltage.
MIC2225-4MYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-UFDFN, 10-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Topology:
- Step-Down (Buck) (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- 1.2V, 600mA
- Voltage/Current - Output 2:
- 2.8V, 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)
MIC2225-4MYMT-TR FAQ
1.How can I place an order for MIC2225-4MYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2225-4MYMT-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 MIC2225-4MYMT-TR reliable?
The price and inventory of MIC2225-4MYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2225-4MYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC2225-4MYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2225-4MYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2225-4MYMT-TR?
MIC2225-4MYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2225-4MYMT-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 MIC2225-4MYMT-TR?
For technical support, including MIC2225-4MYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2225-4MYMT-TR requirements.
6.How does Aetrix verify that MIC2225-4MYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC2225-4MYMT-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 MIC2225-4MYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC2225-4MYMT-TR?
All MIC2225-4MYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2225-4MYMT-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 MIC2225-4MYMT-TR part is unused and in its original packaging.
Return procedure for MIC2225-4MYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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