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Microchip Technology MIC47050-1.8YML-TR
- Part No.:
- MIC47050-1.8YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-VDFN Exposed Pad, 6-MLF®
- Datasheet:
-
MIC47050-1.8YML-TR.pdf
- Description:
- IC REG LINEAR 1.8V 500MA 6MLF
- Quantity:
- Payment:
- Shipping:
Inventory:3,843
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Product details
Overview
MIC47050-1.8YML-TR from Microchip Technology is a 500 mA ultra-low dropout (ULDO) NMOS linear regulator with fixed 1.8 V output, dual-supply architecture (VIN: 1.0–3.6 V; VBIAS: 2.3–5.5 V), 44 mV dropout at full load, ±1.5% initial output accuracy, and stable operation with only 1 μF ceramic output capacitance. It serves as a core or I/O voltage post-regulator for FPGA, DSP, and mobile processor power domains.
For engineers reviewing the MIC47050-1.8YML-TR datasheet, MIC47050-1.8YML-TR pinout, MIC47050-1.8YML-TR application, or MIC47050-1.8YML-TR equivalent, this page delivers verified electrical specs, thermal performance data, AEC-Q100 qualification status, DFN-6 package details, and real-world transient response behavior critical for point-of-load designs in automotive and industrial embedded systems.
Technical Context
The MIC47050-1.8YML-TR uses an NMOS pass transistor architecture enabling ultra-fast load transient response and very low output impedance-key for powering microprocessors and FPGAs with dynamic current demands. Its dual-supply design separates input power path (VIN) from control circuitry bias (VBIAS), decoupling noise-sensitive regulation from high-current switching sources.
It integrates UVLO on both VIN and VBIAS rails (0.85 V and 2.1 V thresholds respectively), logic-level enable with 100 mV hysteresis, open-drain PGOOD with 91–95% rising threshold, and thermal shutdown at 160°C with 20°C hysteresis-all operating across –40°C to +125°C junction temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.8 V ±1.5% at 100 μA; maintains regulation down to 0.4 V headroom (VIN ≥ 2.2 V) |
| Dropout Voltage | 44 mV at 500 mA load; enables efficient operation with minimal VIN–VOUT margin |
| Input Voltage Range | VIN = 1.0 V to 3.6 V; supports direct regulation from low-voltage battery or intermediate rail |
| Bias Supply Range | VBIAS = 2.3 V to 5.5 V; powers internal circuitry independently for noise isolation |
| Stability Capacitor | Stable with ≥1 μF ceramic output capacitor; eliminates need for large bulk capacitance |
| Thermal Rating | Junction temperature range –40°C to +125°C; AEC-Q100 qualified for automotive applications |
| Enable Logic | CMOS/TTL-compatible EN pin; active-high with 0.67 V low / 1.0 V high thresholds |
| Power Good Output | Open-drain PGOOD with 91–95% VOUT rising threshold; supports system sequencing and fault monitoring |
Pinout & Package
Package: 6-pin 2 mm × 2 mm × 0.9 mm thermally enhanced DFN (ML suffix), ePAD grounded for optimal thermal performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - BIAS | Bias supply input | Powers internal control circuitry; requires 2.3–5.5 V; bypass with 0.1 μF ceramic for transient immunity |
| 2 - GND | Ground reference | Main signal and power ground; must be connected to PCB ground plane and ePAD |
| 3 - IN | Input supply | Drain of NMOS pass transistor; accepts 1.0–3.6 V; minimum headroom 44 mV at 500 mA |
| 4 - OUT | Regulated output | Delivers fixed 1.8 V up to 500 mA; stable with 1 μF ceramic output capacitor |
| 5 - PGOOD | Power good indicator | Open-drain output pulled low when VOUT < 91% nominal; used for system power sequencing |
| 6 - EN | Enable control | Active-high logic input; drives regulator into near-zero quiescent current (<1 μA) when low |
| ePAD | Thermal pad | Must be soldered to solid ground plane to achieve θJA = 90°C/W and sustain 500 mA continuous load |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 44 mV at 500 mA enables use with tight VIN–VOUT margins (e.g., 2.2 V → 1.8 V) |
| Dual-supply architecture | Separate VIN (power path) and VBIAS (control bias) rails reduce noise coupling and improve PSRR |
| Fast transient response | High-bandwidth NMOS output stage minimizes voltage droop during FPGA/DSP load steps |
| AEC-Q100 qualification | Qualified for automotive applications (Grade 1: –40°C to +125°C); PPAP-capable |
| Minimal external components | Requires only one 1 μF ceramic output cap and optional 0.1 μF BIAS bypass-no compensation needed |
| Integrated protection | UVLO on both supplies, thermal shutdown (160°C), and current limiting (0.6–3 A short-circuit) |
Applications
| FPGA Core Power | DSP I/O Regulation |
|---|---|
|
Use Scenario: Providing clean, tightly regulated 1.8 V supply to FPGA I/O banks requiring fast transient response and low noise. IC Role / Device Role / Timing Role: Post-regulator after a primary DC/DC converter; delivers final 1.8 V rail with <44 mV dropout and ±1.5% accuracy. Use Value: Enables reliable high-speed interface timing by maintaining voltage within 1.8 V ±25 mV during 100–500 mA load transients. |
Use Scenario: Powering DSP digital I/O interfaces in telecom baseband modules where supply ripple must be minimized. IC Role / Device Role / Timing Role: Low-noise LDO delivering 1.8 V to parallel bus interfaces; leverages 50 dB PSRR at 10 kHz to reject upstream switching noise. Use Value: Reduces bit error rate by suppressing 100 mVpp switching ripple from preceding buck converter to <1 mVpp at DSP pins. |
| Automotive ADAS Camera Module | Industrial PLC Digital I/O |
|
Use Scenario: Supplying image sensor and serializer ICs in AEC-Q100-compliant camera modules operating at ambient up to 105°C. IC Role / Device Role / Timing Role: Primary 1.8 V power source for MIPI CSI-2 transmitter; rated for –40°C to +125°C junction temperature. Use Value: Ensures uninterrupted video streaming under thermal stress by sustaining 500 mA with thermal shutdown at 160°C and 20°C hysteresis. |
Use Scenario: Regulating 1.8 V for isolated digital I/O ASICs in programmable logic controllers exposed to wide industrial temperature swings. IC Role / Device Role / Timing Role: Point-of-load regulator placed adjacent to I/O driver ICs; uses DFN-6 package for compact board layout. Use Value: Achieves >90% power supply rejection at 100 kHz, preventing noise coupling into sensitive analog sensing front-ends. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ultra-low dropout regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TI TPS7A2018PDQNR | Single-supply LDO (1.6–6.0 V IN); 300 mA max; 120 mV dropout at 300 mA; no separate BIAS rail | Lacks dual-supply noise isolation; lower current rating limits use in 500 mA FPGA I/O rails | Select when board space is constrained and BIAS rail decoupling is not required; verify thermal derating at 500 mA |
| Analog Devices ADM7172ACPZ-1.8-R7 | Single-supply LDO (2.3–6.5 V IN); 2 A max; 125 mV dropout at 2 A; higher quiescent current (250 μA vs. 6 μA) | Higher current capability but larger 8-lead LFCSP package; no AEC-Q100 qualification | Prefer for high-current industrial applications where automotive qualification is unnecessary and footprint allows |
Compared with TPS7A2018PDQNR and ADM7172ACPZ-1.8-R7, the MIC47050-1.8YML-TR uniquely combines AEC-Q100 qualification, dual-supply architecture for superior PSRR, and 500 mA capability in a 2 mm × 2 mm DFN-making it the only option qualified for automotive ADAS point-of-load use with 1.8 V I/O rails.
Availability
MIC47050-1.8YML-TR is available at Aetrix Electronics and suitable for FPGA power delivery, automotive camera modules, and industrial PLC I/O regulation requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for MIC47050-1.8YML-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 global semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with a focus on reliability, longevity, and embedded system integration.
The MIC47050 product line delivers ultra-low dropout regulators optimized for point-of-load power in automotive, industrial, and communications equipment-designed specifically for high-transient, multi-rail systems requiring noise-isolated biasing and AEC-Q100 qualification.
FAQ
What is the minimum input voltage required for MIC47050-1.8YML-TR to regulate 1.8 V output?
The MIC47050-1.8YML-TR requires a minimum input voltage of 1.0 V, but to maintain regulation at full 500 mA load, VIN must exceed VOUT by at least the dropout voltage-44 mV typical, up to 120 mV over temperature. Thus, VIN ≥ 1.844 V is recommended for guaranteed 500 mA operation. The datasheet specifies VIN = 1.0–3.6 V, with functional regulation dependent on sufficient headroom.
Does MIC47050-1.8YML-TR require an external feedback resistor network?
No. The MIC47050-1.8YML-TR is a fixed-output variant with internally trimmed 1.8 V reference; it does not include an ADJ pin and requires no external resistors. Only the adjustable versions (e.g., MIC47050YML-TR) use the ADJ pin and external divider. This simplifies layout and eliminates resistor tolerance errors affecting output accuracy.
How does the dual-supply architecture of MIC47050-1.8YML-TR improve noise performance?
The MIC47050-1.8YML-TR separates the high-current VIN path from the low-noise VBIAS rail that powers its control circuitry. This architecture achieves 50 dB PSRR at 10 kHz and 37 dB at 100 kHz-superior to single-supply LDOs-by preventing switching noise from upstream DC/DC converters from modulating the reference or error amplifier. VBIAS bypassing with 0.1 μF further isolates control loop integrity.
Is MIC47050-1.8YML-TR qualified for automotive applications?
Yes. The MIC47050-1.8YML-TR is AEC-Q100 qualified (Grade 1: –40°C to +125°C) and PPAP-capable. This qualification covers the DFN package variant (YML suffix) and confirms reliability for automotive infotainment, ADAS camera modules, and body electronics where extended temperature operation and failure mode analysis are mandatory.
What thermal considerations apply when using MIC47050-1.8YML-TR at 500 mA in a 2-layer PCB?
At 500 mA with 1.8 V input and 1.8 V output (zero dropout), power dissipation is minimal-but with realistic 2.2 V input, PD ≈ 200 mW. With θJA = 90°C/W and maximum TJ = 125°C, ambient must stay ≤98°C for safe operation. Use the exposed thermal pad (ePAD) soldered to ≥2 cm² internal ground plane; avoid thermal relief on ePAD vias to maximize heat transfer.
MIC47050-1.8YML-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-VDFN Exposed Pad, 6-MLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 3.6V
- Voltage - Output (Min/Fixed):
- 1.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.12V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 15 µA
- Current - Supply (Max):
- -
- PSRR:
- 50dB ~ 37dB (10kHz ~ 100kHz)
- Control Features:
- Enable, Power Good
- Protection Features:
- Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-MLF® (2x2)
MIC47050-1.8YML-TR FAQ
1.How can I place an order for MIC47050-1.8YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC47050-1.8YML-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 MIC47050-1.8YML-TR reliable?
The price and inventory of MIC47050-1.8YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC47050-1.8YML-TR is usually 5 days.
3.What payment methods are accepted for MIC47050-1.8YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC47050-1.8YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC47050-1.8YML-TR?
MIC47050-1.8YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC47050-1.8YML-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 MIC47050-1.8YML-TR?
For technical support, including MIC47050-1.8YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC47050-1.8YML-TR requirements.
6.How does Aetrix verify that MIC47050-1.8YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC47050-1.8YML-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 MIC47050-1.8YML-TR meets industry standards.
7.What is the process for return or replacement of MIC47050-1.8YML-TR?
All MIC47050-1.8YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC47050-1.8YML-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 MIC47050-1.8YML-TR part is unused and in its original packaging.
Return procedure for MIC47050-1.8YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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