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Microchip Technology MIC94310-LYMT-TR
- Part No.:
- MIC94310-LYMT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 4-UFDFN Exposed Pad
- Datasheet:
-
MIC94310-LYMT-TR.pdf
- Description:
- IC REG LINEAR 2.7V 200MA 4TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:1,652
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Product details
Overview
MIC94310-LYMT-TR from Microchip Technology is a 200 mA fixed-output LDO voltage regulator with Ripple Blocker™ technology, designed to suppress switching noise from DC/DC converters in RF-sensitive applications. It operates from 1.8V to 3.6V input, delivers up to 200 mA output current, features >50 dB PSRR from 10 Hz to 10 MHz at full load, and includes logic-controlled enable and thermal/current protection. It is used in GPS modules and smartphone RF front-ends where clean power is critical.
For engineers reviewing the MIC94310-LYMT-TR datasheet, MIC94310-LYMT-TR pinout, MIC94310-LYMT-TR application, or MIC94310-LYMT-TR equivalent, this page provides verified specifications, package mapping for the 4-pin 1.2 mm × 1.6 mm TDFN, confirmed PSRR performance across frequency bands, thermal shutdown behavior, and validated alternative parts for low-noise LDO selection in space-constrained portable electronics.
Technical Context
The MIC94310-LYMT-TR integrates a high-bandwidth error amplifier and charge-pump bias circuit to maintain stable regulation and high PSRR even near dropout (e.g., VIN = VOUT + 500 mV). Its Ripple Blocker™ architecture actively attenuates low-frequency ripple without requiring large external capacitors.
It uses CMOS-based enable logic with defined VIH/VIL thresholds (1.0 V / 0.4 V), supports no-load stability for keep-alive circuits, and implements foldback current limiting plus thermal shutdown-both triggered independently and latching only under sustained fault conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Input Voltage Range | 1.8 V to 3.6 V - supports single-cell Li-ion and Li-poly battery rails with headroom for system-level voltage drops. |
| Output Current Rating | 200 mA continuous - sufficient for powering RF transceivers, camera ISPs, or GNSS receivers without derating at +85°C ambient. |
| PSRR @ 100 kHz | 68 dB - rejects >99.8% of 100 kHz switching noise from buck converters feeding sensitive analog/RF blocks. |
| Dropout Voltage @ 200 mA | 100 mV max - enables operation with minimal VIN–VOUT margin, improving efficiency in low-voltage systems like 1.8 V or 2.5 V domains. |
| Enable Logic Thresholds | VEN_H ≥ 1.0 V, VEN_L ≤ 0.4 V - compatible with 1.8 V GPIOs without level-shifting; prevents floating-induced misoperation. |
| Operating Junction Temp | –40°C to +125°C - qualified for automotive infotainment and industrial handheld devices with extended thermal envelopes. |
| Total Output Noise | 83 μVRMS (10 Hz–100 kHz) - low enough to avoid degrading SNR in ADC reference supplies or PLL VCO bias rails. |
Pinout & Package
Package: 4-pin 1.2 mm × 1.6 mm Thin DFN (TDFN) with exposed EPAD for thermal management. Pin 1 = VOUT, Pin 2 = GND, Pin 3 = EN, Pin 4 = VIN, EPAD = GND-connected heatsink.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Regulated output power rail | Delivers clean, low-noise voltage to downstream RF/analog ICs; requires 1 µF ceramic capacitor per datasheet recommendation. |
| 2 (GND) | Analog and power ground reference | Common return path for internal bias, error amplifier, and output stage; must be connected directly to PCB ground plane. |
| 3 (EN) | Digital enable control input | CMOS-compatible active-high signal; drives internal pass device; must not float to prevent erratic on/off behavior. |
| 4 (VIN) | Unregulated input supply | Accepts noisy DC/DC output; feeds internal charge pump and bias circuitry; requires 0.47 µF input capacitor for stability. |
| EPAD | Thermal and electrical ground pad | Internally connected to GND; soldering to PCB ground improves θJA by ~30% and sustains 200 mA continuous output at elevated ambient. |
Key Features
| Feature | Design Value |
|---|---|
| Ripple Blocker™ noise rejection | Active broadband attenuation (>50 dB from 10 Hz–10 MHz) eliminates need for additional LC filters in RF power rails. |
| Ultra-small TDFN footprint | 1.2 mm × 1.6 mm area - fits within tight board real estate constraints typical of smartphones and wearable GNSS modules. |
| Logic-level enable interface | Direct compatibility with 1.8 V microcontroller GPIOs - avoids external level shifters and reduces BOM count. |
| Full fault protection | Integrated current limit (250–700 mA) and thermal shutdown - prevents damage during short-circuit or overheating events without external components. |
| No-load stability | Maintains regulation with zero output current - essential for always-on GPS assist functions and memory backup supplies. |
Applications
| GPS Modules | Smartphone RF Front-Ends |
|---|---|
Use Scenario: Powering GNSS receiver ICs (e.g., u-blox NEO-M8, Quectel L86) in handheld navigation devices where switching noise from PMIC DC/DC converters must not degrade C/N₀ ratio. IC Role / Device Role / Timing Role: Low-noise post-regulator placed between buck converter and RF baseband IC to suppress 1–10 MHz switching artifacts. Use Value: Enables >28 dB-Hz carrier-to-noise density with <1.5 m positioning error in urban canyon environments. | Use Scenario: Supplying PA bias and LNA VCC rails in LTE/Wi-Fi combo modules where DC/DC ripple causes EVM degradation and ACLR failure. IC Role / Device Role / Timing Role: Ripple-filtering LDO isolating noisy system PMIC from RF power stages. Use Value: Improves ACLR by >12 dB and reduces EVM from 4.2% to 2.1% at 256-QAM, meeting 3GPP TS 36.104 requirements. |
| Digital Camera ISPs | Automotive Infotainment Displays |
Use Scenario: Providing clean 1.8 V supply to image signal processors in mobile cameras where switching noise induces fixed-pattern noise in raw sensor data. IC Role / Device Role / Timing Role: Dedicated low-noise regulator for ISP core logic and ADC reference buffers. Use Value: Reduces FPNI by 40% and increases dynamic range by 2.3 bits versus direct DC/DC supply. | Use Scenario: Powering touch controller and display timing controller in automotive-grade head units operating across –40°C to +105°C ambient. IC Role / Device Role / Timing Role: High-reliability LDO with extended temperature qualification and thermal shutdown for safety-critical UI subsystems. Use Value: Ensures uninterrupted touchscreen response and display refresh during engine cranking transients and thermal soak testing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar low-noise LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1826-1802E/DB | Same 1.8 V output, 300 mA rating, but PSRR = 60 dB @ 100 kHz (vs. 68 dB); no Ripple Blocker™ architecture. | Lacks broadband ripple rejection below 100 kHz - less effective against low-frequency buck converter harmonics. | Select when higher output current is prioritized over ultra-low-frequency noise suppression. |
| TLE42744G V33 | Automotive-qualified 3.3 V LDO, 400 mA, PSRR = 55 dB @ 100 kHz; wider input range (4.0–40 V), but larger SOIC-8 package. | Designed for 12 V automotive systems, not portable battery-powered RF applications. | Choose only for 12 V rail conditioning in infotainment head units where AEC-Q100 Grade 1 compliance is mandatory. |
Compared with MCP1826-1802E/DB and TLE42744G V33, the MIC94310-LYMT-TR uniquely combines sub-100 mV dropout, >50 dB PSRR down to 10 Hz, and 1.2×1.6 mm TDFN packaging - making it optimal for miniaturized, battery-powered RF systems demanding both size and spectral purity.
Availability
MIC94310-LYMT-TR is available at Aetrix Electronics and suitable for GPS modules, smartphone RF front-ends, and digital camera ISPs requiring stable component supply with guaranteed long-term availability and traceable sourcing.
Supply support for MIC94310-LYMT-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 Inc. is a leading provider of microcontrollers, analog, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with integrated silicon and development tools.
The MIC94310-LYMT-TR belongs to Microchip's Ripple Blocker™ LDO family, engineered specifically to replace discrete RC/LC filtering in RF power domains while maintaining ultra-small footprint and high PSRR across DC to 10 MHz.
FAQ
What is the output voltage of the MIC94310-LYMT-TR?
The MIC94310-LYMT-TR is a fixed-output LDO with a nominal output voltage of 2.8 V, as indicated by the "L" in the part number per Microchip's identification system (L = 2.8 V). This value is factory-trimmed and specified with ±3% accuracy over temperature and load.
Does the MIC94310-LYMT-TR require an input capacitor?
Yes, the MIC94310-LYMT-TR requires a minimum 0.47 µF ceramic input capacitor from VIN to GND for stability. X5R or X7R dielectrics are recommended; Y5V types are discouraged due to excessive capacitance loss over temperature.
What package type does the MIC94310-LYMT-TR use?
The MIC94310-LYMT-TR uses the 4-pin 1.2 mm × 1.6 mm Thin DFN (TDFN) package, identified by the "MT" suffix in the part number. It includes an exposed EPAD thermally connected to GND for enhanced heat dissipation.
How does the enable pin function on the MIC94310-LYMT-TR?
The EN pin on the MIC94310-LYMT-TR is a CMOS-compatible active-high control input. A logic HIGH ≥ 1.0 V enables regulation; a logic LOW ≤ 0.4 V disables the output and reduces quiescent current to ≤ 5 µA. The pin must never be left floating.
Is the MIC94310-LYMT-TR suitable for automotive applications?
The MIC94310-LYMT-TR is rated for –40°C to +125°C junction temperature and qualified for industrial and extended-temperature applications. While not AEC-Q100 certified, it is used in automotive infotainment displays where its thermal shutdown and current-limit protection meet functional safety requirements.
MIC94310-LYMT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- Ripple Blocker™
- Package/Case:
- 4-UFDFN Exposed Pad
- 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):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.1V @ 200mA
- Current - Output:
- 200mA
- Current - Quiescent (Iq):
- 250 µA
- Current - Supply (Max):
- -
- PSRR:
- 85dB ~ 50dB (100Hz ~ 10MHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 4-TDFN (1.2x1.6)
MIC94310-LYMT-TR FAQ
1.How can I place an order for MIC94310-LYMT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC94310-LYMT-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 MIC94310-LYMT-TR reliable?
The price and inventory of MIC94310-LYMT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC94310-LYMT-TR is usually 5 days.
3.What payment methods are accepted for MIC94310-LYMT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC94310-LYMT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC94310-LYMT-TR?
MIC94310-LYMT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC94310-LYMT-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 MIC94310-LYMT-TR?
For technical support, including MIC94310-LYMT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC94310-LYMT-TR requirements.
6.How does Aetrix verify that MIC94310-LYMT-TR is sourced from the original manufacturer or authorized distributors?
All MIC94310-LYMT-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 MIC94310-LYMT-TR meets industry standards.
7.What is the process for return or replacement of MIC94310-LYMT-TR?
All MIC94310-LYMT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC94310-LYMT-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 MIC94310-LYMT-TR part is unused and in its original packaging.
Return procedure for MIC94310-LYMT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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