My Inquiry
My Account
Microchip Technology MIC2205-1.8YML-TR
- Part No.:
- MIC2205-1.8YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 10-VFDFN Exposed Pad, 10-MLF®
- Datasheet:
-
MIC2205-1.8YML-TR.pdf
- Description:
- IC REG BUCK 1.8V 600MA 10MLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,854
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MIC2205-1.8YML-TR from Microchip Technology is a 2 MHz synchronous buck regulator with integrated LDO standby mode, delivering 1.8 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 MIC2205-1.8YML-TR datasheet, MIC2205-1.8YML-TR pinout, MIC2205-1.8YML-TR application, or MIC2205-1.8YML-TR equivalent, key selection criteria include its dual-mode operation (PWM/LDO), 100% duty cycle capability for low-dropout use, stability with 1 μF ceramic output capacitor, thermal shutdown protection, and VDFN-10L package compatibility with space-constrained PCB layouts.
Technical Context
The MIC2205-1.8YML-TR integrates synchronous MOSFETs and operates in constant-frequency 2 MHz PWM mode above ~60 mA load, switching automatically to LDO mode below that threshold via LOWQ control. Its internal 1.0 V reference and fixed 1.8 V output are set by factory-trimmed resistors - no external feedback divider required.
It features separate analog (AGND/AVIN) and power (PGND/VIN/SW) domains, with dedicated BIAS pin for control circuitry biasing and independent LDO output pin (LDO) tied directly to VOUT in standby. The device supports 100% duty cycle operation and includes overtemperature shutdown at 160°C with 20°C hysteresis.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±2% over temperature - eliminates need for external resistor divider and simplifies layout. |
| Input Voltage Range | 2.7 V to 5.5 V - compatible with single-cell Li-ion, Li-poly, and 3.3 V/5 V system rails. |
| PWM Output Current | Up to 600 mA - sufficient for powering core logic, I/O, or RF sections in portable devices. |
| LDO Mode Quiescent Current | 18 μA typical - extends battery life during sleep/standby without introducing switching noise. |
| Output Noise (LDO mode) | 75 μVRMS (10 Hz–100 kHz) - enables clean supply for noise-sensitive analog circuits or PLLs. |
| Switching Frequency | 2 MHz ±10% - allows use of small 2.2 μH inductors and reduces EMI filtering burden. |
| Maximum Duty Cycle | 100% - supports operation with VIN as low as VOUT + dropout (110 mV @ 50 mA), critical for battery end-of-life. |
| Junction Temperature Range | –40°C to +125°C - qualified for industrial and extended-temperature embedded applications. |
Pinout & Package
Package: 10-lead 3 mm × 3 mm × 0.9 mm Very Thin Plastic Dual Flat No-Lead (VDFN-10L), RoHS-compliant, with exposed thermal pad (EP/GND) for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 AGND | Analog ground reference | Return path for FB, EN, LOWQ, BIAS - must be isolated from PGND to prevent noise coupling into control loop. |
| 2 LDO | LDO output node | Connects directly to VOUT; provides regulated 1.8 V in LOWQ = low mode; high-impedance in PWM mode. |
| 3 BIAS | Internal bias supply input | Bypassed with 0.1 μF capacitor to AGND; powers error amplifier and reference - not loadable. |
| 4 AVIN | Analog supply input | Supplies LDO and bias circuitry via internal 6 Ω resistor; must tie to VIN but routed separately to avoid SW noise injection. |
| 5 FB | Feedback input | Internally connected to fixed 1.8 V divider; no external components needed for this variant - simplifies design validation. |
| 6 EN | Enable control input | Logic-high (>0.85 V) enables regulation; logic-low (<0.5 V) shuts down device to <5 μA - supports system-level power sequencing. |
| 7 LOWQ | Mode select input | Logic-low (<0.5 V) forces LDO mode (18 μA IQ); logic-high (>1.5 V) enables PWM mode (600 mA capability). |
| 8 VIN | Main power input | Supplies high-side/low-side MOSFETs; requires 1 μF ceramic bypass to PGND close to pin. |
| 9 SW | Switch node output | Drives external inductor; high dv/dt node - must minimize trace area and avoid routing near sensitive analog signals. |
| 10 PGND | Power ground return | High-current return path for PWM loop; must be short, low-inductance connection to VIN capacitor and inductor. |
Key Features
| Feature | Design Value |
|---|---|
| Dual-mode regulation (PWM + LDO) | Enables seamless transition between high-efficiency 600 mA PWM and ultra-low-noise 60 mA LDO - no external mode-switching circuitry required. |
| Stable with 1 μF ceramic output capacitor | Reduces bill-of-materials cost and board area versus traditional buck regulators requiring ≥4.7 μF tantalum or polymer caps. |
| 100% duty cycle operation | Permits regulation down to VIN = VOUT + 110 mV, extending usable battery voltage range in single-cell Li-ion applications. |
| Integrated MOSFET switches | Eliminates need for external high-side/low-side FETs and gate drivers - reduces component count and layout complexity. |
| Thermal shutdown & current limit | Protects against sustained overload or poor heatsinking; trips at 160°C with 20°C hysteresis and limits peak switch current to 1.85 A. |
| Micropower shutdown | Draws <5 μA when EN = low - suitable for always-on monitoring circuits or battery-backed real-time clocks. |
Applications
| USB Peripheral Power Supply | Portable Audio DAC Supply |
|---|---|
Use Scenario: Powering USB HID devices (keyboards, mice) or bus-powered hubs from 5 V USB host port with tight ripple and noise requirements. IC Role / Device Role: Primary 1.8 V rail generator for microcontroller core and USB transceiver logic. Use Value: LDO mode delivers 75 μVRMS noise during idle, preventing USB packet errors; PWM mode sustains 600 mA for firmware updates or enumeration bursts. | Use Scenario: Providing clean 1.8 V bias to high-resolution audio DACs in Bluetooth headphones or portable DAC/amp units. IC Role / Device Role: Low-noise post-regulator after primary DC/DC converter, isolating analog section from digital switching noise. Use Value: 18 μA quiescent current in LDO mode preserves battery runtime; 100% duty cycle maintains regulation as battery discharges from 4.2 V to 3.0 V. |
| Cellular Phone Baseband Core | PDA Application Processor I/O Rail |
Use Scenario: Supplying 1.8 V core voltage to baseband SoC in legacy 2G/3G feature phones operating across wide temperature ranges. IC Role / Device Role: Efficient, thermally robust step-down regulator supporting dynamic voltage scaling during call vs. standby states. Use Value: –40°C to +125°C junction rating ensures reliability in automotive-integrated handsets; thermal shutdown prevents damage during prolonged transmit bursts. | Use Scenario: Delivering stable 1.8 V to PDA application processor I/O banks interfacing with touch controllers and display drivers. IC Role / Device Role: High-transient-response power stage handling rapid load steps from LCD backlight enable/disable events. Use Value: Ultra-fast transient response minimizes output droop/surge; 2 MHz switching avoids interference with touch sensing frequencies (100–200 kHz). |
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 output; 2.25 MHz switching; 300 mA max output; no dedicated LDO mode - uses PFM for light-load efficiency. | Lacks true LDO mode - introduces 100–500 kHz ripple in light-load conditions, unsuitable for noise-sensitive analog rails. | Select when board space is tighter (2 mm × 2 mm WSON) and noise sensitivity is low; avoid where PSRR >60 dB at 100 kHz is required. |
| RT8059ZSP | Fixed 1.8 V output; 1.5 MHz switching; 600 mA output; light-load mode draws 35 μA - higher than MIC2205-1.8YML-TR's 18 μA. | Higher quiescent current reduces battery life in long-duration standby; no 100% duty cycle support limits low-VIN headroom. | Choose if cost is primary constraint and thermal performance at 125°C is not required; verify dropout margin with aging battery. |
Compared with TPS62260DRVR and RT8059ZSP, the MIC2205-1.8YML-TR uniquely combines true LDO standby (18 μA, zero switching noise) with full 600 mA PWM capability and 100% duty cycle - making it the only option among the three qualified for simultaneous high-efficiency and ultra-low-noise operation in battery-critical portable designs.
Availability
MIC2205-1.8YML-TR is available at Aetrix Electronics and suitable for USB peripherals, portable audio systems, and cellular baseband power supplies requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MIC2205-1.8YML-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 power management ICs, with broad industrial, automotive, and consumer market reach.
The MIC2205 product line delivers highly integrated, dual-mode DC/DC converters optimized for portable battery-powered equipment where both high efficiency and ultra-low-noise operation are mandatory.
FAQ
What is the output voltage tolerance of the MIC2205-1.8YML-TR over temperature?
The MIC2205-1.8YML-TR provides a fixed 1.8 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 test condition "±2% (over temperature)". This tolerance is achieved using factory-trimmed internal resistors and does not require external calibration.
Can the MIC2205-1.8YML-TR operate with input voltage equal to output voltage?
Yes - the MIC2205-1.8YML-TR supports 100% maximum duty cycle operation, enabling regulation with VIN as low as VOUT plus dropout voltage (110 mV typical at 50 mA). This allows functional operation down to VIN ≈ 1.91 V, making it suitable for deep battery discharge scenarios in single-cell Li-ion systems.
How does the LOWQ pin control mode switching in the MIC2205-1.8YML-TR?
The LOWQ pin on the MIC2205-1.8YML-TR is a logic-controlled input: pulling LOWQ below 0.5 V enables LDO mode (18 μA IQ, 60 mA output), while driving it above 1.5 V activates PWM mode (2 MHz, 600 mA output). The transition is automatic and output-voltage seamless - no external sequencing or timing constraints are required for reliable mode handoff.
Is an external feedback resistor network required for the MIC2205-1.8YML-TR?
No - the MIC2205-1.8YML-TR is the fixed 1.8 V output variant; its feedback divider is fully internal and factory-trimmed. Pin 5 (FB) is internally connected to the 1.0 V reference and output divider, so no external resistors or feed-forward capacitors are needed, unlike the adjustable MIC2205 versions.
What thermal protection features does the MIC2205-1.8YML-TR include?
The MIC2205-1.8YML-TR incorporates thermal shutdown that activates at +160°C junction temperature with 20°C hysteresis, plus current limiting that caps peak switch current at 1.85 A. These protections are fully internal and require no external components - they safeguard the MIC2205-1.8YML-TR during overload, short-circuit, or inadequate PCB thermal relief conditions.
MIC2205-1.8YML-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):
- 1.8V
- 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)
MIC2205-1.8YML-TR FAQ
1.How can I place an order for MIC2205-1.8YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2205-1.8YML-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 MIC2205-1.8YML-TR reliable?
The price and inventory of MIC2205-1.8YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2205-1.8YML-TR is usually 5 days.
3.What payment methods are accepted for MIC2205-1.8YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2205-1.8YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2205-1.8YML-TR?
MIC2205-1.8YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2205-1.8YML-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 MIC2205-1.8YML-TR?
For technical support, including MIC2205-1.8YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2205-1.8YML-TR requirements.
6.How does Aetrix verify that MIC2205-1.8YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC2205-1.8YML-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 MIC2205-1.8YML-TR meets industry standards.
7.What is the process for return or replacement of MIC2205-1.8YML-TR?
All MIC2205-1.8YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC2205-1.8YML-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 MIC2205-1.8YML-TR part is unused and in its original packaging.
Return procedure for MIC2205-1.8YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC2205-1.8YML-TR Tags
-
TPS562201DDCR
Texas Instruments
-
MC34063ABD-TR
STMicroelectronics
-
TPS561201DDCR
Texas Instruments
-
MC33063ADR
Texas Instruments
-
MC34063ADR
Texas Instruments
-
TPS560200DBVR
Texas Instruments
-
AP3012KTR-G1
Diodes Incorporated
-
TLV61048DBVR
Texas Instruments
-
AZ34063UMTR-G1
Diodes Incorporated
-
TPS562200DDCR
Texas Instruments
-
AP62300TWU-7
Diodes Incorporated
-
MC34063EBD-TR
STMicroelectronics
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…
