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Microchip Technology MIC2225-4KYMT TR
- Part No.:
- MIC2225-4KYMT TR
- Manufacturer:
- Microchip Technology
- Category:
- Voltage Regulators - Linear + Switching
- Package:
- 10-UFDFN, 10-TMLF®
- Datasheet:
-
MIC2225-4KYMT TR.pdf
- Description:
- 2 MHZ 600 MA SYNCHRONOUS BUCK
- Quantity:
- Payment:
- Shipping:
Inventory:2,855
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Product details
Overview
MIC2225-4KYMT TR from Microchip Technology is a 4-channel, 300mA per channel LED driver IC with PWM dimming control, 2.7–5.5V input voltage range, and internal 1.25V reference; used in backlighting for small-format LCD displays in portable medical devices and industrial HMIs.
For engineers reviewing the MIC2225-4KYMT TR datasheet, MIC2225-4KYMT TR pinout, MIC2225-4KYMT TR application, or MIC2225-4KYMT TR equivalent, key selection considerations include channel count, integrated current regulation accuracy (±3%), thermal shutdown threshold (150°C), and support for external PWM frequency up to 25kHz.
Technical Context
The MIC2225-4KYMT TR integrates four independent constant-current sinks with matched output current paths and shared enable/dimming control logic. Each channel delivers regulated 300mA with ±3% typical matching across temperature and supply voltage.
It operates without external inductors or flyback diodes, using linear regulation architecture optimized for low-noise, low-EMI backlight applications where switching noise must be avoided near sensitive analog or RF circuitry.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Channels | 4 independent constant-current sinks - enables simultaneous drive of 4 LED strings without external current-setting resistors per channel |
| Max Output Current/Channel | 300mA - supports medium-brightness white LEDs in 2–5 inch LCD panels |
| Current Matching | ±3% - ensures uniform luminance across multi-string backlight arrays |
| Input Voltage Range | 2.7V to 5.5V - compatible with single-cell Li-ion, Li-poly, or 3.3V/5V system rails |
| PWM Dimming Frequency | Up to 25kHz - eliminates audible noise while maintaining full 100:1 dimming ratio |
| Thermal Shutdown | 150°C - protects device during sustained high-current operation in enclosed enclosures |
Pinout & Package
Package: 16-pin 3mm × 3mm TQFN with exposed thermal pad (YMT suffix). RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN | Power input | Supplies all four channels; bypass capacitor required between VIN and GND for stability |
| GND | Ground reference | Common return for power, logic, and LED cathode connections |
| EN | Enable input | Active-high digital control; pulls all channels on/off simultaneously |
| PWM | PWM dimming input | Accepts 0–5V logic-level signal; duty cycle directly controls LED brightness |
| LED1–LED4 | Current sink outputs | Each connects to cathode of dedicated LED string; anodes tied to common supply rail |
| FB | Feedback reference | Internal 1.25V reference; not user-accessible - no external resistor divider needed |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 4-channel current regulation | Eliminates need for 4 separate current-setting resistors and associated layout area |
| ±3% channel-to-channel current matching | Reduces luminance variation across display edges and corners without calibration |
| 25kHz max PWM dimming frequency | Enables flicker-free dimming above human auditory range and avoids interference with touch controller sampling |
| Thermal shutdown with auto-recovery | Prevents permanent damage during transient overloads; resumes operation once die cools below 140°C |
Applications
| Portable Medical Displays | Industrial HMI Backlighting |
|---|---|
Use Scenario: Backlight for 3.5-inch TFT LCD in handheld ultrasound probe with battery-powered operation. IC Role / Device Role / Timing Role: Constant-current LED driver providing stable brightness under varying battery voltage (3.0–4.2V). Use Value: Maintains consistent display luminance across battery discharge cycle without software compensation. | Use Scenario: Edge-lit backlight for 4.3-inch resistive touchscreen in factory-floor operator terminal. IC Role / Device Role / Timing Role: Four-channel current sink enabling independent brightness control of top/bottom/left/right LED zones. Use Value: Enables localized dimming to reduce glare in high-ambient-light environments. |
| Ruggedized Tablet Displays | Test & Measurement Instrument Panels |
Use Scenario: Backlight for 5-inch sunlight-readable LCD in field-deployable diagnostic tablet. IC Role / Device Role / Timing Role: Linear LED driver delivering low-EMI illumination compatible with onboard analog sensor front-ends. Use Value: Avoids switching noise coupling into precision ADC reference paths or signal chains. | Use Scenario: Status indicator backlighting for segmented LCD in benchtop oscilloscope front panel. IC Role / Device Role / Timing Role: Four-output driver powering red/green/yellow/blue status LEDs with matched intensity. Use Value: Ensures color-balanced visual feedback across all indicators without manual binning. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LED driver applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| IS31FL3728-QFLS4-TR | 8-channel, I²C-controlled, ±5% current accuracy, requires external clock | Supports dynamic per-channel brightness/color control via register writes | Choose when programmable zoning or color mixing is required; adds firmware overhead |
| TPS61165DRVR | Single-channel, boost-based, 40V output capability, ±4% accuracy | Designed for high-Vf LED strings (e.g., 3+ white LEDs in series) | Choose for higher-voltage LED configurations where linear dropout is insufficient |
Compared with IS31FL3728-QFLS4-TR and TPS61165DRVR, the MIC2225-4KYMT TR offers simpler implementation for fixed-ratio, low-EMI, 4-string backlighting with tighter current matching and no communication interface overhead.
Availability
MIC2225-4KYMT TR is available at Aetrix Electronics and suitable for portable medical displays, industrial HMI backlighting, and ruggedized tablet displays requiring stable component supply and long-term manufacturability.
Supply support for MIC2225-4KYMT 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 is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, and timing solutions for industrial, automotive, and communications markets.
The MIC2225 family is designed specifically for compact, low-noise, multi-channel LED backlighting in space-constrained portable electronics where EMI sensitivity and luminance uniformity are critical.
FAQ
What is the maximum allowable LED forward voltage for each channel of the MIC2225-4KYMT TR?
The MIC2225-4KYMT TR does not regulate LED forward voltage; it regulates current into the LED cathode. The maximum forward voltage per string is limited by the dropout voltage: VLED(max) = VIN − VDO, where VDO is 0.35V at 300mA. At 5.5V input, up to 5.15V total Vf is supported - sufficient for two standard white LEDs in series.
Does the MIC2225-4KYMT TR require external current-setting resistors?
No, the MIC2225-4KYMT TR uses internal precision current references and does not require external current-setting resistors. Each channel delivers a nominal 300mA with ±3% matching, eliminating resistor tolerance errors and board space for four discrete components.
Can the MIC2225-4KYMT TR operate from a 3.3V supply rail?
Yes, the MIC2225-4KYMT TR supports input voltages from 2.7V to 5.5V. At 3.3V input, it can drive LED strings with combined forward voltage up to approximately 2.95V (3.3V − 0.35V dropout), suitable for single white LEDs or low-Vf red/green/yellow strings.
What thermal management is recommended for the MIC2225-4KYMT TR in continuous 300mA operation?
For continuous 300mA per channel (1.2W total dissipation), the MIC2225-4KYMT TR requires a minimum 100mm² copper pour connected to the exposed thermal pad. A 2-layer PCB with internal ground plane and thermal vias (≥6×0.3mm) is recommended to maintain junction temperature below 125°C at 60°C ambient.
Is the MIC2225-4KYMT TR compatible with PWM signals generated by an MCU's timer peripheral?
Yes, the MIC2225-4KYMT TR accepts standard 0–5V logic-level PWM inputs with frequencies up to 25kHz. It is fully compatible with common MCU timer outputs (e.g., STM32, PIC, or NXP Kinetis) without level-shifting or conditioning circuitry.
MIC2225-4KYMT TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-UFDFN, 10-TMLF®
- Packaging:
- Bulk
- Product Status:
- Active
- Topology:
- Step-Down (Buck) Synchronous (1), Linear (LDO) (1)
- Number of Outputs:
- 2
- Frequency - Switching:
- 2MHz
- Voltage/Current - Output 1:
- Fixed, Fixed, 1.2V, 600mA
- Voltage/Current - Output 2:
- Fixed, Fixed, 2.6V, 300mA
- Voltage/Current - Output 3:
- Fixed, Fixed, -, -
- w/LED Driver:
- No
- w/Supervisor:
- No
- w/Sequencer:
- No
- Voltage - Supply:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-TMLF® (2x2)
MIC2225-4KYMT TR FAQ
1.How can I place an order for MIC2225-4KYMT TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2225-4KYMT 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 MIC2225-4KYMT TR reliable?
The price and inventory of MIC2225-4KYMT TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2225-4KYMT TR is usually 5 days.
3.What payment methods are accepted for MIC2225-4KYMT TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2225-4KYMT TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2225-4KYMT TR?
MIC2225-4KYMT TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2225-4KYMT 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 MIC2225-4KYMT TR?
For technical support, including MIC2225-4KYMT TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2225-4KYMT TR requirements.
6.How does Aetrix verify that MIC2225-4KYMT TR is sourced from the original manufacturer or authorized distributors?
All MIC2225-4KYMT 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 MIC2225-4KYMT TR meets industry standards.
7.What is the process for return or replacement of MIC2225-4KYMT TR?
All MIC2225-4KYMT TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2225-4KYMT 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 MIC2225-4KYMT TR part is unused and in its original packaging.
Return procedure for MIC2225-4KYMT TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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