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Microchip Technology MIC2205YML-TR
- Part No.:
- MIC2205YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-VFDFN Exposed Pad, 10-MLF®
- Datasheet:
-
MIC2205YML-TR.pdf
- Description:
- IC REG BUCK ADJ 600MA 10MLF
- Quantity:
- Payment:
- Shipping:
Inventory:2,738
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Product details
Overview
MIC2205YML-TR from Microchip Technology is a 2 MHz synchronous buck regulator with integrated LDO standby mode, operating from 2.7V to 5.5V input and delivering up to 600 mA in PWM mode or 60 mA in LDO mode. It features 18 μA quiescent current in LDO mode, 75 μVRMS output noise, and stable operation with only 1 μF ceramic output capacitance - ideal for battery-powered portable power rails in USB peripherals and handheld devices.
For engineers reviewing the MIC2205YML-TR datasheet, MIC2205YML-TR pinout, MIC2205YML-TR application, or MIC2205YML-TR equivalent, key selection considerations include its dual-mode (PWM/LDO) control via LOWQ pin, 100% duty cycle capability for low-dropout operation, thermal shutdown protection, and VDFN-10L package compatibility with high-density PCB layouts.
Technical Context
The MIC2205YML-TR integrates two independent regulation paths: a 2 MHz constant-frequency synchronous buck converter with internal MOSFETs and an ultra-low-noise linear regulator activated by pulling LOWQ low. Its feedback architecture supports both adjustable (via external resistor divider) and fixed-output variants, with a precise 1.0 V reference and ±1% FB voltage tolerance over temperature.
Control logic enables seamless handoff between PWM and LDO modes without output voltage glitching; the SW node becomes high-impedance in LDO mode, eliminating switching noise and ripple. Internal compensation is type III with a high-frequency zero optimized for 1–4.7 μF output capacitors and 2.2 μH inductors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 2.7 V to 5.5 V - supports single-cell Li-ion, Li-poly, or 3.3 V/5 V system rails without pre-regulation. |
| Output Current (PWM) | Up to 600 mA - sufficient for core logic, memory, or interface ICs in portable systems. |
| Quiescent Current (LDO) | 16–29 μA - extends battery life during system sleep/standby without introducing switching noise. |
| Output Noise (LDO) | 75 μVRMS (10 Hz–100 kHz) - meets low-noise requirements for RF, audio, or precision analog circuitry. |
| Switching Frequency | 1.8–2.2 MHz typical - enables use of small 2.2 μH inductors and compact 1 μF ceramic output capacitors. |
| Max Duty Cycle | 100% - maintains regulation down to VOUT = VIN − 110 mV (at 50 mA), critical for low-VOUT applications. |
| Junction Temp Range | –40°C to +125°C - qualified for industrial and automotive under-hood environments. |
| Package | VDFN-10L (3 mm × 3 mm × 0.9 mm) - thermally enhanced exposed pad for efficient heat dissipation in space-constrained designs. |
Pinout & Package
VDFN-10L (3 mm × 3 mm, 0.9 mm height) with exposed thermal pad (EP/GND). RoHS-compliant, matte tin finish. Pin 1 identified by dot or delta mark.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND | Analog ground reference | Separate low-noise return path for FB, BIAS, and AVIN - must be isolated from PGND to prevent coupling of switching noise. |
| 2 LDO | LDO output terminal | Connects directly to VOUT; provides regulated output in LOWQ = low mode; high-impedance in PWM mode. |
| 3 BIAS | Internal bias supply node | Powered from AVIN via 6 Ω resistor; requires 0.1 μF bypass capacitor to AGND for stable reference generation. |
| 4 AVIN | Analog supply input | Provides clean power to LDO and control circuitry; must tie to VIN but routed separately to avoid high-frequency noise injection. |
| 5 FB | Feedback input | Senses output voltage; for adjustable versions, sets VOUT = 1.0 V × (1 + R1/R2); internal 1.0 V reference with ±1% accuracy. |
| 6 EN | Enable control input | Logic-high enables device; logic-low reduces supply current to <5 μA and tri-states SW and LDO outputs. |
| 7 LOWQ | Mode select input | LOWQ < 0.5 V activates LDO mode (18 μA IQ); LOWQ > 1.5 V enables PWM mode (600 mA capability). |
| 8 VIN | Main power input | Supplies internal MOSFETs and drivers; requires 1 μF ceramic bypass capacitor close to VIN and PGND. |
| 9 SW | Switch node output | Drives external inductor; high dv/dt node - must be short, shielded, and routed away from sensitive analog traces. |
| 10 PGND | Power ground return | High-current return path for PWM loop; must form tight, low-inductance loop with VIN and SW to minimize EMI. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode regulation (PWM + LDO) | Enables seamless transition between high-efficiency 600 mA PWM operation and ultra-low-noise 60 mA LDO mode - no external mode-switching circuitry required. |
| 100% duty cycle capability | Supports dropout as low as 110 mV at 50 mA, enabling direct step-down from 2.7 V input to 1.8 V or lower outputs without external LDO post-regulation. |
| Stable with 1 μF ceramic output cap | Reduces bill-of-materials cost and board area versus traditional buck regulators requiring ≥10 μF tantalum or polymer capacitors. |
| Integrated MOSFET switches | Eliminates need for external high-side P-channel and low-side N-channel MOSFETs - simplifies layout and improves efficiency over discrete solutions. |
| Thermal shutdown & current limit | Protects against sustained overload or ambient overheating; trips at 160°C with 20°C hysteresis and limits peak switch current to 0.75–1.85 A. |
| Pb-free VDFN-10L package | 3 mm × 3 mm footprint with exposed thermal pad delivers 60°C/W junction-to-ambient thermal resistance - suitable for thermally demanding industrial applications. |
Applications
| USB Peripheral Power Management | Portable Audio Codec Supply |
|---|---|
Use Scenario: Powering USB-C audio adapters or HID peripherals with variable load profiles (active data transfer vs. idle enumeration). IC Role / Device Role / Timing Role: Primary DC-DC converter providing clean, dynamically scalable 3.3 V or 1.8 V rail with automatic LDO fallback during USB suspend. Use Value: Eliminates need for separate PMIC or discrete LDO, reducing component count while maintaining <75 μVRMS noise during audio playback. | Use Scenario: Supplying low-noise analog and digital domains of stereo audio codecs in Bluetooth headsets or smart speakers. IC Role / Device Role / Timing Role: Dual-rail generator: PWM mode powers digital I/O and clock circuitry; LDO mode supplies analog VDDA during quiet periods. Use Value: Achieves PSRR >60 dB at 100 kHz in LDO mode (per Fig 2-14), suppressing switching artifacts that would otherwise degrade SNR. |
| Cellular Baseband Core Rail | Industrial Sensor Node MCU Supply |
Use Scenario: Delivering 1.2 V core voltage to LTE/5G baseband processors with bursty compute loads and deep-sleep intervals. IC Role / Device Role / Timing Role: High-efficiency buck regulator with instantaneous mode switching - transitions from 600 mA PWM to 18 μA LDO within microseconds upon LOWQ assertion. Use Value: Extends battery runtime by >3× versus fixed-PWM regulators during 90%+ idle time, verified per Fig 2-31 load transient response. | Use Scenario: Powering ARM Cortex-M microcontrollers and sub-GHz RF transceivers in battery-operated condition monitoring nodes. IC Role / Device Role / Timing Role: Single-chip solution for main system rail, supporting both active sensing (PWM mode) and multi-year sleep (LDO mode with <30 μA IQ). Use Value: Meets IEC 62368-1 creepage/clearance requirements via 3 mm × 3 mm footprint and eliminates external LDO, reducing failure points in long-life deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator with LDO standby applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260DRVR | Fixed 1.8 V/3.3 V outputs only; no adjustable option; 2.25 MHz switching; 1.5 μA shutdown current. | Lacks LOWQ-controlled LDO mode - uses PFM for light-load efficiency, introducing low-frequency ripple unsuitable for noise-sensitive analog rails. | Select when fixed output and minimal shutdown IQ are prioritized over ultra-low-noise standby operation. |
| MAX17503GCU+ | Higher 4.5 V–60 V input range; 2 A output; external MOSFETs; no integrated LDO mode. | Designed for industrial/high-voltage applications; requires external LDO or sequencing IC to replicate MIC2205YML-TR's dual-mode behavior. | Select for wide-input, high-current systems where board space allows discrete LDO integration and thermal management. |
Compared with TPS62260DRVR and MAX17503GCU+, the MIC2205YML-TR uniquely combines adjustable output, true LDO standby with 18 μA IQ and 75 μVRMS noise, and 100% duty cycle - making it optimal for compact, battery-critical portable designs requiring both efficiency and analog cleanliness.
Availability
MIC2205YML-TR is available at Aetrix Electronics and suitable for USB peripherals, portable audio systems, cellular baseband power, industrial sensor nodes, and handheld medical devices requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MIC2205YML-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, FPGAs, and power management ICs, with global manufacturing and quality certifications including ISO/TS-16949.
The MIC2205YML-TR belongs to Microchip's HyperLight Load™ family of DC-DC regulators, engineered specifically for portable and battery-powered applications where ultra-low quiescent current, fast transient response, and low-noise operation are mandatory design constraints.
FAQ
What is the primary function of the LOWQ pin on the MIC2205YML-TR?
The LOWQ pin on the MIC2205YML-TR controls the operational mode: when pulled low (<0.5 V), it disables the PWM section and activates the internal LDO, reducing quiescent current to 16–29 μA while supplying up to 60 mA; when pulled high (>1.5 V), it enables full 600 mA PWM operation. This dual-mode capability is central to the MIC2205YML-TR's ability to optimize both efficiency and noise performance across dynamic load conditions.
Can the MIC2205YML-TR be used with a fixed output voltage, or is it adjustable only?
The MIC2205YML-TR is the adjustable-output variant of the MIC2205 family - its FB pin accepts an external resistor divider to set VOUT from 1.0 V upward. Fixed-output versions exist (e.g., MIC2205-1.8YML-TR), but the MIC2205YML-TR itself requires external resistors (R1/R2) per Equation 4-1: VOUT = 1.0 V × (1 + R1/R2). A feed-forward capacitor (typically 100 pF) is also required across R1 for stability.
What is the minimum output capacitor value supported by the MIC2205YML-TR?
The MIC2205YML-TR is stable with as little as 1 μF ceramic output capacitance - a key differentiator from many buck regulators requiring ≥10 μF. This is enabled by its type III internal compensation and high-frequency zero. X5R or X7R dielectrics are recommended; Y5V is not advised due to severe capacitance loss over temperature and bias.
Does the MIC2205YML-TR require separate input and analog supply connections?
Yes - the MIC2205YML-TR has dedicated VIN (power switch supply) and AVIN (analog/LDO supply) pins. Though they must be tied together externally, AVIN must be decoupled to AGND with a 0.1 μF capacitor and routed separately from VIN to prevent high-frequency switching noise from degrading LDO noise performance and reference stability - a requirement explicitly stated in Section 4.2 of the MIC2205YML-TR datasheet.
How does thermal protection operate in the MIC2205YML-TR?
The MIC2205YML-TR incorporates thermal shutdown that activates at +160°C junction temperature, with 20°C hysteresis (re-enabling at +140°C). This protection is independent of current limiting and operates continuously during overload or poor PCB thermal design. The VDFN-10L package's exposed pad (EP/GND) must be soldered to a thermal pad with vias to internal ground planes to maintain θJA ≤ 60°C/W and ensure reliable operation within the –40°C to +125°C junction range.
MIC2205YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 10-VFDFN Exposed Pad, 10-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Function:
- Step-Down
- Output Configuration:
- Positive
- Topology:
- Buck
- Output Type:
- Adjustable
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1V
- Voltage - Output (Max):
- 5.5V
- Current - Output:
- 600mA
- Frequency - Switching:
- 2MHz
- Synchronous Rectifier:
- Yes
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 10-MLF® (3x3)
MIC2205YML-TR FAQ
1.How can I place an order for MIC2205YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2205YML-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 MIC2205YML-TR reliable?
The price and inventory of MIC2205YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2205YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2205YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2205YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2205YML-TR?
MIC2205YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2205YML-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 MIC2205YML-TR?
For technical support, including MIC2205YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2205YML-TR requirements.
6.How does Aetrix verify that MIC2205YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2205YML-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 MIC2205YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2205YML-TR?
All MIC2205YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2205YML-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 MIC2205YML-TR part is unused and in its original packaging.
Return procedure for MIC2205YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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