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Microchip Technology MIC2205-1.3YML-TR
- Part No.:
- MIC2205-1.3YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-VFDFN Exposed Pad, 10-MLF®
- Datasheet:
-
MIC2205-1.3YML-TR.pdf
- Description:
- IC REG BUCK 1.3V 600MA 10MLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,308
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Product details
Overview
MIC2205-1.3YML-TR from Microchip Technology is a 2 MHz synchronous buck regulator with integrated LDO standby mode, delivering 1.3 V fixed output at up to 600 mA in PWM mode and 60 mA in LDO mode, with 18 μA quiescent current and 75 μVRMS output noise. It operates from 2.7 V to 5.5 V input and supports ultra-fast load transients in portable power systems such as USB peripherals and cellular handsets.
For engineers reviewing the MIC2205-1.3YML-TR datasheet, MIC2205-1.3YML-TR pinout, MIC2205-1.3YML-TR application, or MIC2205-1.3YML-TR equivalent, key selection criteria include its dual-mode operation (PWM + LDO), 100% duty cycle capability for low-dropout conditions, stability with 1 μF ceramic output capacitor, thermal shutdown protection, and VDFN-10L package compatibility with high-density PCB layouts.
Technical Context
The MIC2205-1.3YML-TR integrates two independent regulation paths: a 2 MHz constant-frequency synchronous buck converter with internal MOSFETs and a parallel low-noise LDO activated via LOWQ pin control. Its type III compensation enables stable operation with small output capacitance (≥1 μF), while the 100% duty cycle allows operation down to VIN = VOUT + dropout (110 mV @ 50 mA).
Switching and analog sections are isolated via separate ground pins (PGND/AGND) and supply rails (VIN/AVIN), with BIAS decoupled by 0.1 μF. The FB pin uses an internal 1.0 V reference; for the fixed 1.3 V variant, no external resistor divider is required-only a 100 pF feed-forward capacitor between FB and VOUT is specified.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.3 V ±2% over temperature - eliminates need for external feedback resistors and reduces BOM count. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion, Li-polymer, and 3.3 V/5 V system rails. |
| PWM Output Current | Up to 600 mA - sufficient for powering core logic, I/O, or RF subsystems in portable devices. |
| LDO Mode IQ | 16–29 μA typical - extends battery life during system sleep without introducing switching noise. |
| Output Noise | 75 μVRMS (10 Hz–100 kHz) - meets low-noise requirements for ADC references and RF bias supplies. |
| Thermal Protection | 160°C shutdown with 20°C hysteresis - prevents permanent damage under sustained overload or poor heatsinking. |
| Package | VDFN-10L (3 mm × 3 mm × 0.9 mm) - exposes thermal pad for efficient heat transfer and supports automated reflow assembly. |
Pinout & Package
Package: 10-Lead Very Thin Plastic Dual Flat, No Lead (VDFN-10L), 3 mm × 3 mm body, 0.9 mm height, exposed thermal pad (EP/GND). RoHS-compliant matte tin finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND | Analog ground reference | Return path for FB, BIAS, AVIN, and internal error amplifier - must be routed separately from PGND to avoid noise coupling. |
| 2 LDO | LDO output node | Connects directly to VOUT; provides regulated 1.3 V in LOWQ = low mode; high-impedance in PWM mode. |
| 3 BIAS | Internal bias supply | Powered from AVIN via 6 Ω resistor; requires 0.1 μF bypass to AGND to stabilize control loop reference. |
| 4 AVIN | Analog supply input | Supplies LDO and bias circuitry; must tie to VIN but be physically isolated to suppress switching noise from VIN. |
| 5 FB | Feedback input | Internally referenced to 1.0 V; for 1.3 V fixed version, connect 100 pF capacitor from FB to VOUT - no resistor divider needed. |
| 6 EN | Enable input | Logic-low (<0.5 V) disables entire device, reducing IQ to <5 μA; open-drain compatible with 1.8 V/3.3 V GPIO. |
| 7 LOWQ | Mode select input | Logic-low enables LDO mode (18 μA IQ, 60 mA drive); logic-high enables PWM mode (600 mA, 2 MHz). |
| 8 VIN | Main power input | Supplies high-current switches; requires ≥1 μF X5R/X7R ceramic capacitor placed near VIN–PGND loop. |
| 9 SW | Power switch output | Drives external 2.2 μH inductor; high dv/dt node - minimize trace area and distance to reduce EMI. |
| 10 PGND | Power ground return | High-current return path for PWM switch; must form tight loop with VIN and SW to limit radiated emissions. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode regulation | Seamless transition between 600 mA PWM and 60 mA LDO modes via LOWQ pin - eliminates output voltage glitch during mode change. |
| Ultra-low-noise LDO mode | 75 μVRMS noise and 18 μA quiescent current - preserves signal integrity in noise-sensitive analog/RF stages during standby. |
| 100% duty cycle operation | Supports dropout as low as 110 mV @ 50 mA - enables regulation when input falls near output voltage (e.g., battery discharge). |
| Minimal external components | Stable with only 1 μF output capacitor and no external compensation - reduces footprint and design validation effort. |
| Robust protection suite | Integrated thermal shutdown, current limiting (0.75–1.85 A), and UVLO (2.55 V typ.) - ensures safe operation across voltage and load extremes. |
Applications
| USB Peripheral Power | Cellular Phone Core Rail |
|---|---|
Use Scenario: Powering USB-C audio adapters, HID devices, or flash drives where host port current is limited and noise must not interfere with data lines. IC Role / Device Role / Timing Role: Primary DC-DC converter supplying clean 1.3 V to microcontroller or USB PHY; LDO mode maintains regulation during suspend states. Use Value: 75 μVRMS noise prevents bit errors on USB differential pairs; 18 μA IQ extends adapter battery life >3× versus PWM-only regulators. | Use Scenario: Supplying application processor I/O or memory interface rails in smartphones operating from single-cell Li-ion batteries. IC Role / Device Role / Timing Role: Point-of-load regulator delivering stable 1.3 V under dynamic load steps (e.g., camera activation, LTE transmit bursts). Use Value: Ultra-fast transient response minimizes voltage droop; 100% duty cycle sustains regulation down to 1.41 V input during deep battery discharge. |
| PDA Application Processor | Low-Power IoT Sensor Hub |
Use Scenario: Powering ARM-based application processors in handheld PDAs requiring low-noise, high-efficiency conversion from 3.7 V battery. IC Role / Device Role / Timing Role: Main system regulator enabling both active compute (PWM mode) and deep-sleep monitoring (LDO mode). Use Value: Dual-mode architecture reduces average system IQ by >90% during idle periods without sacrificing wake-up speed or output accuracy. | Use Scenario: Regulating power for BLE/Wi-Fi SoCs and environmental sensors in battery-powered edge nodes. IC Role / Device Role / Timing Role: Single-chip solution replacing discrete buck + LDO combo; LOWQ pin synchronized to MCU sleep/wake signals. Use Value: Eliminates 3–5 passive components per rail; 60°C/W θJA enables full 600 mA output in compact 3 mm × 3 mm footprint without heatsink. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar buck regulator with LDO standby applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62260DRVR | 2.25 MHz fixed-frequency buck; no integrated LDO mode - relies on PFM for light-load efficiency; 25 μA IQ in PFM. | Lacks true low-noise LDO path - introduces ~20 mVPP ripple in light-load mode, unsuitable for RF/analog supplies. | Select when absolute lowest IQ is secondary to cost and board space; avoid for noise-critical rails. |
| RT8059ZSP | 2 MHz buck with separate LDO enable; LDO IQ = 35 μA, output noise = 120 μVRMS; requires external LDO pass element. | Discrete LDO implementation increases component count and layout complexity; higher noise degrades ADC SNR. | Choose only if 1.3 V output tolerance tighter than ±2% is required - RT8059 offers ±1%. |
Compared with TPS62260DRVR and RT8059ZSP, the MIC2205-1.3YML-TR uniquely combines true LDO-level noise performance with buck-level current delivery in one monolithic IC, enabling simpler, quieter, and more reliable power architecture for portable electronics.
Availability
MIC2205-1.3YML-TR is available at Aetrix Electronics and suitable for USB peripherals, cellular handsets, and PDA application processors requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC2205-1.3YML-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 manufacturer specializing in microcontrollers, analog, and power management ICs, with broad industrial, automotive, and consumer market reach.
The MIC2205 product line delivers highly integrated, low-noise DC-DC solutions optimized for battery-powered portable electronics where efficiency, size, and electromagnetic compatibility are critical design constraints.
FAQ
What is the output voltage tolerance of the MIC2205-1.3YML-TR across temperature?
The MIC2205-1.3YML-TR has a fixed 1.3 V output with ±2% tolerance over the full –40°C to +125°C junction temperature range, as confirmed in the Electrical Characteristics table (DS20006177A, page 3). This specification applies to the factory-trimmed internal feedback network and does not require external calibration. The MIC2205-1.3YML-TR achieves this accuracy using a precision 1.0 V bandgap reference and laser-trimmed resistive divider.
Can the MIC2205-1.3YML-TR operate with input voltage equal to its 1.3 V output?
Yes - the MIC2205-1.3YML-TR supports 100% maximum duty cycle, enabling operation with VIN as low as VOUT + dropout voltage (110 mV typical at 50 mA load). At 1.3 V output, this allows functional regulation down to ~1.41 V input, making it suitable for deeply discharged Li-ion cells. The MIC2205-1.3YML-TR maintains regulation without foldback or shutdown until VIN drops below the 2.45 V UVLO threshold.
What is the recommended output capacitor for the MIC2205-1.3YML-TR?
The MIC2205-1.3YML-TR is optimized for a 2.2 μF X5R or X7R ceramic output capacitor, but remains stable with values from 1 μF to 4.7 μF. Y5V dielectrics are explicitly discouraged due to severe capacitance loss over temperature. A 10 nF ceramic capacitor is also recommended close to the load for high-frequency noise filtering. The MIC2205-1.3YML-TR's type III compensation eliminates need for ESR tuning.
How does the LOWQ pin affect the MIC2205-1.3YML-TR's output behavior?
When LOWQ is pulled low (<0.5 V), the MIC2205-1.3YML-TR disables PWM switching and activates its internal LDO, sourcing up to 60 mA at 1.3 V with 18 μA quiescent current and 75 μVRMS noise. When LOWQ is high (>1.5 V), it enables 2 MHz PWM mode for up to 600 mA. The MIC2205-1.3YML-TR transitions between modes with no output voltage glitch or overshoot.
Is thermal derating required for the MIC2205-1.3YML-TR at 600 mA continuous load?
Yes - with θJA = 60°C/W, the MIC2205-1.3YML-TR dissipates ~0.36 W at 600 mA (assuming 0.4 Ω high-side RDS(on) and 5 V input), resulting in ~22°C rise above ambient. Full 600 mA output is sustainable at +105°C ambient if PCB layout includes the exposed thermal pad soldered to ≥1 in² copper pour with ≥4 thermal vias. Derating is required above +105°C ambient to stay within +125°C TJ limit.
MIC2205-1.3YML-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:
- Fixed
- Number of Outputs:
- 1
- Voltage - Input (Min):
- 2.7V
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 1.3V
- Voltage - Output (Max):
- -
- 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)
MIC2205-1.3YML-TR FAQ
1.How can I place an order for MIC2205-1.3YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2205-1.3YML-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 MIC2205-1.3YML-TR reliable?
The price and inventory of MIC2205-1.3YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2205-1.3YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2205-1.3YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2205-1.3YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2205-1.3YML-TR?
MIC2205-1.3YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2205-1.3YML-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 MIC2205-1.3YML-TR?
For technical support, including MIC2205-1.3YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2205-1.3YML-TR requirements.
6.How does Aetrix verify that MIC2205-1.3YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2205-1.3YML-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 MIC2205-1.3YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2205-1.3YML-TR?
All MIC2205-1.3YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2205-1.3YML-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 MIC2205-1.3YML-TR part is unused and in its original packaging.
Return procedure for MIC2205-1.3YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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