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Microchip Technology MIC2205-1.58YML-TR
- Part No.:
- MIC2205-1.58YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-VFDFN Exposed Pad, 10-MLF®
- Datasheet:
-
MIC2205-1.58YML-TR.pdf
- Description:
- IC REG BUCK 1.58V 600MA 10MLF
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
MIC2205-1.58YML-TR from Microchip Technology is a 2 MHz synchronous buck regulator with integrated LDO standby mode, delivering 1.58 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 - deployed in USB peripherals and portable battery-powered systems requiring ultra-low-noise, high-efficiency power conversion.
For engineers reviewing the MIC2205-1.58YML-TR datasheet, MIC2205-1.58YML-TR pinout, MIC2205-1.58YML-TR application, or MIC2205-1.58YML-TR equivalent, key selection criteria include fixed 1.58 V output, dual-mode operation (PWM/LDO), 3 mm × 3 mm VDFN-10L package, –40°C to +125°C junction temperature range, and compatibility with 1 μF ceramic output capacitors.
Technical Context
The MIC2205-1.58YML-TR integrates fully synchronous MOSFETs and operates in constant-frequency 2 MHz PWM mode for high efficiency (>95% at 600 mA), switching automatically to low-noise LDO mode under light load (≤60 mA) with only 18 μA quiescent current. Its internal feedback reference is trimmed to 1.0 V, and the fixed 1.58 V output is set via internal resistor divider.
It features dual ground paths (AGND/PGND), separate AVIN bias supply, and dedicated LOWQ control pin to force LDO mode - enabling seamless transition between modes without output voltage droop or overshoot. The device supports 100% duty cycle for low-dropout operation and includes thermal shutdown (160°C) and current limiting (0.75–1.85 A).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.58 V ±2% over temperature - eliminates external feedback resistors and simplifies layout for stable point-of-load regulation. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion (3.0–4.2 V), USB 5 V, and 3.3 V rail inputs without pre-regulation. |
| Max Output Current | 600 mA in PWM mode; 60 mA in LDO mode - enables dynamic load handling while preserving battery life during idle/sleep states. |
| Quiescent Current | 18 μA in LDO mode; 690–900 μA in PWM mode - extends runtime in always-on portable devices such as USB audio adapters and smart sensors. |
| Switching Frequency | 2 MHz (1.8–2.2 MHz typical) - allows use of small 2.2 μH inductors and compact 1 μF ceramic output capacitors, reducing board area. |
| Noise Performance | 75 μVRMS (10 Hz–100 kHz) in LDO mode - meets stringent analog/RF supply requirements without additional filtering. |
| Package | VDFN-10L (3 mm × 3 mm × 0.9 mm) with exposed thermal pad - provides low θJA = 60°C/W for thermally constrained handheld PCBs. |
Pinout & Package
Package: 10-Lead Very Thin Plastic Dual Flat, No Lead (VDFN-10L), 3 mm × 3 mm body, 0.9 mm height, RoHS-compliant matte tin finish, with exposed thermal pad (EP/GND) on underside.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (AGND) | Analog Ground | Reference return for FB, BIAS, and error amplifier - must be routed separately from PGND to avoid noise coupling into control loop. |
| 2 (LDO) | LDO Output | Connects directly to VOUT; supplies regulated 1.58 V in LOWQ = low mode; high-impedance in PWM mode. |
| 3 (BIAS) | Bias Supply Input | Internally 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 bias circuitry; must tie to VIN but with careful layout to isolate high-frequency switching noise. |
| 5 (FB) | Feedback Input | Internally connected to fixed 1.58 V divider; no external resistors needed - simplifies design and improves accuracy vs. adjustable variants. |
| 6 (EN) | Enable Input | Logic-compatible input (0.5–1.3 V threshold); pulls device into <5 μA shutdown state when driven low. |
| 7 (LOWQ) | Mode Select Input | Directly controls PWM ↔ LDO transition: LOWQ < 0.5 V enables LDO mode; >1.5 V enables PWM mode. |
| 8 (VIN) | Main Power Input | Supplies internal MOSFETs and drivers; requires 1 μF ceramic bypass capacitor close to VIN and PGND pins. |
| 9 (SW) | Power Switch Node | High-speed switching output to inductor; must be minimized in trace length and kept away from sensitive analog nodes. |
| 10 (PGND) | Power Ground | High-current return path for PWM switch; forms tight loop with VIN and SW to minimize EMI and voltage spikes. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low-noise LDO standby | 75 μVRMS output noise and 18 μA IQ enable clean power for RF, audio, or precision ADC circuits during sleep. |
| Seamless PWM/LDO mode transition | No output voltage glitch or overshoot during handoff - critical for real-time systems requiring uninterrupted supply stability. |
| 100% duty-cycle capability | Supports dropout as low as 110 mV at 50 mA - maintains regulation even when input drops near output voltage (e.g., Li-ion end-of-discharge). |
| Stable with minimal output capacitance | Guaranteed stability with only 1 μF ceramic output capacitor - reduces BOM cost and footprint vs. traditional buck regulators. |
| Integrated protection suite | Thermal shutdown (160°C), current limit (0.75–1.85 A), and UVLO (2.45–2.65 V) prevent damage under fault conditions without external components. |
Applications
| USB Audio Adapters | Portable Medical Sensors |
|---|---|
|
Use Scenario: Compact USB-C audio dongles powering DACs and headphone amplifiers from 5 V bus power. IC Role / Device Role: Primary 1.58 V supply for low-noise analog signal chain, switching to LDO mode during audio pause/idle. Use Value: Eliminates audible switching noise in headphones by leveraging 75 μVRMS LDO output, while maintaining >95% efficiency during active playback. |
Use Scenario: Wearable ECG/PPG sensors operating on coin-cell or small Li-po batteries with multi-day runtime requirements. IC Role / Device Role: System power regulator delivering 1.58 V to MCU, analog front-end, and BLE radio - dynamically scaling current mode based on sensor activity. Use Value: Extends battery life by 3.2× vs. standard buck-only regulators due to 18 μA LDO quiescent current during sensor sleep cycles. |
| Industrial Handheld Terminals | Smart USB Peripherals |
|
Use Scenario: Ruggedized barcode scanners and RFID readers used in warehouses with intermittent wireless transmission bursts. IC Role / Device Role: Single-chip power solution providing 1.58 V to processor core and RF transceiver, managing rapid load transients from 10 μA to 600 mA. Use Value: Ultra-fast transient response prevents brownout during transmit events, while 2 MHz switching avoids interference with 2.4 GHz ISM band. |
Use Scenario: USB-powered smart hubs with integrated USB-PD negotiation and multiple downstream ports. IC Role / Device Role: Auxiliary 1.58 V rail for USB PHY logic and status LEDs, coexisting with main 3.3 V/5 V rails on dense PCBs. Use Value: 3 mm × 3 mm VDFN-10L package saves >40% board area vs. comparable SOIC-8 buck regulators, enabling thinner industrial enclosures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar synchronous buck regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS62231DRYR | Fixed 1.6 V output; 2.05 MHz switching; 17 μA IQ in PFM mode; no LDO mode; requires ≥2.2 μF output cap. | Lower noise not guaranteed; lacks seamless LDO handoff - unsuitable where analog supply cleanliness is critical during low-load states. | Select when absolute minimum IQ is priority and system can tolerate higher ripple in light-load operation. |
| RT8059ZSP | Adjustable 0.6–5.5 V output; 2 MHz; 25 μA IQ in skip mode; no integrated LDO; 100% duty cycle not supported. | Requires external feedback network; dropout limited to ~300 mV - cannot regulate down to 1.58 V from 2.7 V input reliably. | Choose for flexible output voltage tuning where fixed 1.58 V is not required and thermal headroom permits higher dropout. |
Compared with TPS62231DRYR and RT8059ZSP, the MIC2205-1.58YML-TR uniquely combines fixed 1.58 V output, true LDO standby with 75 μVRMS noise, and 100% duty cycle - making it the only option among the three that guarantees clean, dropout-tolerant, single-rail power for noise-sensitive portable analog loads.
Availability
MIC2205-1.58YML-TR is available at Aetrix Electronics and suitable for USB peripherals, portable medical sensors, and industrial handheld terminals requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MIC2205-1.58YML-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 devices, and power management ICs, with global design centers and ISO/TS-16949-certified wafer fabrication.
The MIC2205 product line delivers high-efficiency, low-noise DC-DC conversion for portable and battery-powered applications - designed specifically to extend runtime while maintaining analog signal integrity in space-constrained systems.
FAQ
What is the output voltage tolerance of the MIC2205-1.58YML-TR over temperature?
The MIC2205-1.58YML-TR has a fixed 1.58 V output with ±2% tolerance over the full –40°C to +125°C junction temperature range, as specified in the Electrical Characteristics table under "Fixed Output Voltages" with nominal VOUT tolerance of ±1% at 25°C and ±2% over temperature.
Does the MIC2205-1.58YML-TR require external feedback resistors?
No, the MIC2205-1.58YML-TR does not require external feedback resistors. Its 1.58 V output is set internally via a factory-trimmed resistor divider connected to the FB pin - eliminating component count, layout sensitivity, and tolerance drift associated with external networks.
How does the LOWQ pin affect operation of the MIC2205-1.58YML-TR?
The LOWQ pin directly selects operating mode: when pulled below 0.5 V, the MIC2205-1.58YML-TR enters LDO mode (18 μA IQ, 60 mA max output); when above 1.5 V, it operates in 2 MHz PWM mode (600 mA max, >95% efficiency). The transition is seamless with no output voltage disturbance.
Can the MIC2205-1.58YML-TR operate with a 1 μF output capacitor?
Yes, the MIC2205-1.58YML-TR is explicitly characterized and guaranteed stable with a minimum 1 μF ceramic output capacitor - a key differentiator versus most buck regulators requiring ≥4.7 μF - enabling smaller, lower-cost designs without compromising transient response.
What thermal protection features does the MIC2205-1.58YML-TR include?
The MIC2205-1.58YML-TR includes thermal shutdown at 160°C (±10°C) with 20°C hysteresis, plus current limiting (0.75–1.85 A) and undervoltage lockout (2.45–2.65 V). These protections activate independently and do not require external components to safeguard the MIC2205-1.58YML-TR under overload or ambient overheating conditions.
MIC2205-1.58YML-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):
- 1.58V
- 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)
MIC2205-1.58YML-TR FAQ
1.How can I place an order for MIC2205-1.58YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2205-1.58YML-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 MIC2205-1.58YML-TR reliable?
The price and inventory of MIC2205-1.58YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2205-1.58YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2205-1.58YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2205-1.58YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2205-1.58YML-TR?
MIC2205-1.58YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2205-1.58YML-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 MIC2205-1.58YML-TR?
For technical support, including MIC2205-1.58YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2205-1.58YML-TR requirements.
6.How does Aetrix verify that MIC2205-1.58YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2205-1.58YML-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 MIC2205-1.58YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2205-1.58YML-TR?
All MIC2205-1.58YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2205-1.58YML-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 MIC2205-1.58YML-TR part is unused and in its original packaging.
Return procedure for MIC2205-1.58YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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