My Inquiry
My Account
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:
- IC REG DL BUCK/LNR 2MHZ 10TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,781
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC2225-4KYMT-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 1.2V (buck) and 2.6V (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 MIC2225-4KYMT-TR datasheet, MIC2225-4KYMT-TR pinout, MIC2225-4KYMT-TR application, or MIC2225-4KYMT-TR equivalent, key selection criteria include its dual-rail output configuration, 2MHz constant-frequency PWM operation, ultra-low noise LDO with 470µVRMS output noise, thermal shutdown protection, and compatibility with 2.2µF ceramic output capacitors.
Technical Context
The MIC2225-4KYMT-TR implements independent enable control for each regulator: EN drives the buck section, while ENLDO controls the LDO. Its buck stage uses internal P-channel and N-channel MOSFETs with 100% duty cycle capability and 0.4Ω typical ON-resistance, enabling high-efficiency step-down conversion up to 600mA at 2MHz switching frequency.
The integrated LDO features 210mV dropout at 300mA, 43dB PSRR at 1kHz, and 470µVRMS integrated output noise (10Hz–100kHz). Both regulators share a common 2.7V–5.5V input range but use separate ground paths-PGND for power switching and AGND/SGND for analog control-to minimize noise coupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7V to 5.5V - supports single-cell Li-ion and USB-powered systems without external pre-regulation. |
| Buck Output | Fixed 1.2V @ 600mA - supplies processor core rails with >95% efficiency and stable operation using only 2.2µF ceramic output capacitance. |
| LDO Output | Fixed 2.6V @ 300mA - provides low-noise I/O supply with 210mV dropout and 470µVRMS noise for sensitive analog circuitry. |
| Switching Frequency | 2MHz ±10% - enables compact external components (2.2µH inductor, 2.2µF capacitors) and minimizes EMI in space-constrained portable designs. |
| Protection Features | Thermal shutdown (160°C), current limit (0.675A min), UVLO (2.55V typ), and logic-level enable inputs - ensures robust operation under fault conditions. |
| Package & Temp Range | 10-pin 2mm × 2mm Thin MLF® (Pb-free, NiPdAu finish); –40°C to +125°C junction temperature - suitable for automotive infotainment and industrial handheld applications. |
Pinout & Package
Package: 10-pin 2mm × 2mm Thin MLF® (MT), RoHS-compliant, halogen-free mold compound, NiPdAu lead finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND | Analog Ground | Reference return for feedback, bias, and LDO control circuits; must be isolated from PGND to prevent switching noise injection. |
| 2 LDO | LDO Output | Delivers regulated 2.6V; requires direct connection to 2.2µF ceramic capacitor for stability and low-noise performance. |
| 3 BIAS | Bias Supply Input | Powers internal reference and control circuitry via internal 6Ω resistor; bypassed with 0.1µF capacitor to AGND for noise suppression. |
| 4 AVIN | Analog Supply Input | Supplies LDO and bias blocks; tied directly to VIN but routed separately to reduce high-frequency switching noise coupling. |
| 5 FB | Feedback Input | Monitors buck output voltage; internally connected to 1.2V divider for fixed-output variant, eliminating external resistor network. |
| 6 EN | Buck Enable | Active-high logic input; <0.2V disables buck stage, reducing quiescent current to <5µA and placing SW in high-impedance state. |
| 7 ENLDO | LDO Enable | Active-high logic input; <0.2V disables LDO, reducing quiescent current to <5µA and disconnecting LDO output. |
| 8 VIN | Main Power Input | Supplies buck switch MOSFETs and current sensing; requires local 1µF ceramic bypass capacitor between VIN and PGND. |
| 9 SW | Switch Node | Connects to external inductor; carries high di/dt PWM current; must be routed short and away from sensitive analog traces. |
| 10 PGND | Power Ground | High-current return path for buck switching loop; must be partitioned from AGND/SGND to avoid ground bounce and noise coupling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent regulation | Simultaneous 1.2V/600mA buck and 2.6V/300mA LDO outputs with separate enable pins enable flexible power sequencing in multi-rail systems. |
| Ultra-low noise LDO | 470µVRMS output noise (10Hz–100kHz) and 43dB PSRR at 1kHz support noise-sensitive analog peripherals like camera sensors and ADCs. |
| 2MHz constant-frequency PWM | Enables use of small 2.2µH inductors and 2.2µF ceramic capacitors, reducing board area by >40% versus 500kHz solutions. |
| Integrated MOSFETs & protection | Internal P/N-channel switches eliminate external FETs; thermal shutdown, current limit, and UVLO ensure safe operation across industrial temperature range. |
| Optimized for ceramic capacitors | Stable with 2.2µF X5R/X7R output capacitors on both rails-no tantalum or electrolytic required-reducing cost and improving reliability. |
Applications
| Smartphone Application Processor Core | Camera Module DSP Power |
|---|---|
Use Scenario: Powers ARM-based application processor core requiring tightly regulated 1.2V at up to 600mA with fast transient response during burst-mode operation. IC Role / Device Role / Timing Role: Primary buck regulator delivering core voltage; operates at 2MHz to minimize inductor size and improve load-step response time. Use Value: Enables compact PCB layout with 2.2µH inductor and eliminates need for external MOSFETs or compensation components. | Use Scenario: Supplies clean 2.6V power to image signal processor (ISP) and CMOS sensor interface in mobile camera modules. IC Role / Device Role / Timing Role: Low-noise LDO providing I/O rail; decouples switching noise from sensitive analog imaging circuitry. Use Value: 470µVRMS output noise and 43dB PSRR at 1kHz prevent image artifacts and color distortion in high-resolution video capture. |
| USB-Powered Peripheral | Industrial Handheld Terminal |
Use Scenario: Powers microcontroller and interface ICs in USB-powered barcode scanners or HID devices drawing up to 300mA from 5V USB bus. IC Role / Device Role / Timing Role: Dual-rail regulator converting 5V USB input to 1.2V core and 2.6V I/O voltages with independent enable control. Use Value: 2.7V–5.5V input range accepts full USB voltage tolerance (4.75V–5.25V); 100% duty cycle allows operation down to 2.7V during brownout. | Use Scenario: Provides reliable power to MCU, display driver, and wireless transceiver in ruggedized handheld terminals operating from 3.7V Li-ion battery. IC Role / Device Role / Timing Role: Dual-output PMIC supporting wide input range and extended temperature operation (–40°C to +125°C). Use Value: Junction temperature rating and thermal shutdown protect against overheating in sealed enclosures with limited airflow. |
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 |
|---|---|---|---|
| TPS62231DRYR | Single 600mA buck only (no integrated LDO); requires external LDO for second rail; 3MHz switching frequency. | Lacks monolithic dual-rail integration; increases BOM count and layout complexity for two-rail systems. | Select when higher switching frequency (3MHz) and smaller inductors are prioritized over integration and noise performance. |
| RT8070ZSP | Dual buck (not buck+LDO); 600mA/300mA outputs; no LDO noise filtering; 2.5MHz operation. | Higher switching noise on both rails; unsuitable for noise-sensitive analog loads requiring clean LDO output. | Choose for cost-sensitive applications where both rails can tolerate switching noise and discrete LDO addition is acceptable. |
Compared with TPS62231DRYR and RT8070ZSP, the MIC2225-4KYMT-TR uniquely integrates a low-noise LDO alongside the buck regulator in one package, eliminating external LDO components while delivering 470µVRMS noise and 43dB PSRR-critical for camera and audio subsystems where noise coupling degrades signal integrity.
Availability
MIC2225-4KYMT-TR is available at Aetrix Electronics and suitable for smartphone power management, camera module design, and USB peripheral development requiring stable component supply across production volumes.
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
Micrel Inc. was a U.S.-based semiconductor company specializing in power management, analog, and mixed-signal ICs before its acquisition by Microchip Technology in 2015.
The MIC2225 product line was designed for ultra-compact, low-noise dual-rail power delivery in portable consumer electronics-including cellular handsets, PDAs, and USB peripherals-emphasizing integration, efficiency, and noise immunity.
FAQ
What are the fixed output voltages of the MIC2225-4KYMT-TR?
The MIC2225-4KYMT-TR provides fixed 1.2V from its synchronous buck regulator and fixed 2.6V from its integrated LDO. These values are factory-trimmed and do not require external feedback resistors-pin 5 (FB) is internally connected to the 1.2V output for regulation. The marking code "4TK" on the device confirms this specific voltage combination.
Can the MIC2225-4KYMT-TR operate with a 2.7V input supply?
Yes, the MIC2225-4KYMT-TR supports input voltages from 2.7V to 5.5V. At 2.7V input, it maintains regulation for both outputs: the buck delivers 1.2V with 100% duty cycle capability, and the LDO sustains 2.6V with 210mV dropout (requiring minimum 2.86V input for full 300mA load). This makes MIC2225-4KYMT-TR suitable for single-cell Li-ion systems nearing end-of-discharge.
What is the recommended output capacitor for the LDO section of the MIC2225-4KYMT-TR?
The MIC2225-4KYMT-TR LDO requires a 2.2µF X5R or X7R ceramic capacitor connected directly between pin 2 (LDO) and AGND. This value ensures stability, low output impedance, and optimal noise performance-verified across –40°C to +125°C. A 0.1µF capacitor on pin 3 (BIAS) is also mandatory for internal bias circuit stability.
Does the MIC2225-4KYMT-TR support independent enable control for each regulator?
Yes, the MIC2225-4KYMT-TR features fully independent enable control: pin 6 (EN) toggles the buck regulator, and pin 7 (ENLDO) toggles the LDO. Each input accepts standard logic levels (VIH ≥ 1.0V, VIL ≤ 0.2V), and asserting either low reduces its respective quiescent current to <5µA while tri-stating the output. This enables precise power sequencing in multi-rail systems.
What package type and thermal characteristics does the MIC2225-4KYMT-TR use?
The MIC2225-4KYMT-TR is housed in a 10-pin 2mm × 2mm Thin MLF® (MT) package with Pb-free NiPdAu finish. Its junction-to-ambient thermal resistance (θJA) is 90°C/W, and it operates across –40°C to +125°C junction temperature. Thermal shutdown activates at 160°C with 23°C hysteresis, protecting MIC2225-4KYMT-TR during sustained overload or poor PCB heat sinking.
MIC2225-4KYMT-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:
- 2.6V, 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)
MIC2225-4KYMT-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.
MIC2225-4KYMT-TR Tags
-
TPS6521905RHBR
Texas Instruments
-
MIC3385YHL-TR
Microchip Technology
-
A4402ELPTR-T
Allegro MicroSystems
-
LM26480SQ-AA/NOPB
Texas Instruments
-
A4402KLPTR-T
Allegro MicroSystems
-
BD71847AMWV-E2
ROHM Semiconductor
-
ADP5040ACPZ-1-R7
Analog Devices Inc.
-
LT3048IDC#TRPBF
Analog Devices Inc.
-
ADP5037ACPZ-R7
Analog Devices Inc.
-
XRP7714ILB-F
MaxLinear, Inc.
-
LTC3260EDE#TRPBF
Analog Devices Inc.
-
LTC3260EMSE#PBF
Analog Devices Inc.
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…
