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Microchip Technology MIC5305-2.7YML-TR
- Part No.:
- MIC5305-2.7YML-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-VDFN Exposed Pad, 6-MLF®
- Datasheet:
-
MIC5305-2.7YML-TR.pdf
- Description:
- IC REG LINEAR 2.7V 150MA 6MLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,137
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Product details
Overview
MIC5305-2.7YML-TR from Micrel is a fixed-output 2.7V, 150mA ultra-low-dropout linear regulator in a 6-pin 2mm × 2mm MLF® package, featuring 60mV dropout at full load, ±1.0% initial output accuracy, and 20µVrms output noise - deployed in portable audio codec power supplies and fiber optic modules where low-noise, space-constrained biasing is critical.
For engineers reviewing the MIC5305-2.7YML-TR datasheet, MIC5305-2.7YML-TR pinout, MIC5305-2.7YML-TR application, or MIC5305-2.7YML-TR equivalent, key selection criteria include dropout voltage under 150mA load, PSRR performance up to 85dB at 1kHz, thermal shutdown behavior, enable pin logic compatibility, and ceramic capacitor stability with no minimum load requirement.
Technical Context
The MIC5305-2.7YML-TR integrates a CMOS-based LDO core with quick-start reference bypass circuitry and internal thermal shutdown. Its error amplifier drives a low-RDS(on) pass element optimized for 2.25V–5.5V input range and 2.7V fixed output.
It employs an active-high enable input with 0.2V logic-low threshold and 1.0V logic-high threshold, and uses a dedicated BYP pin for external 0.1µF capacitor connection to reduce reference noise - directly lowering output voltage noise to 20µVrms (10Hz–100kHz) without degrading turn-on time beyond 30µs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7V ±1.0% initial accuracy ensures stable bias for 2.7V-tolerant analog circuits like audio DACs. |
| Dropout Voltage | 60mV @ 150mA enables operation down to VIN = 2.76V - critical for single-cell Li-ion or Li-poly systems near end-of-discharge. |
| PSRR | 85dB @ 1kHz with 0.1µF BYP capacitor suppresses switching noise from upstream DC/DC converters in mixed-signal PCBs. |
| Ground Current | 90µA typical at light load minimizes quiescent drain in always-on keep-alive circuits such as RTC or SRAM backup rails. |
| Output Noise | 20µVrms (10Hz–100kHz) supports low-noise analog signal chains in audio codecs and precision sensors. |
| Enable Threshold | Logic-compatible EN pin activates above 1.0V and shuts down below 0.2V - interfaces directly with 1.8V/3.3V GPIO without level-shifting. |
| Thermal Protection | Internal thermal shutdown triggers at TJ ≥ 125°C and recovers autonomously - prevents permanent damage during sustained overload or poor heatsinking. |
Pinout & Package
The MIC5305-2.7YML-TR is housed in a Pb-free, RoHS-compliant 6-pin 2mm × 2mm MLF® (MicroLeadFrame) package with exposed ground pad (EPAD), offering 93°C/W junction-to-ambient thermal resistance and footprint compatibility with standard MLF reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - EN | Enable Input | Active-high digital control: >1.0V enables regulation; <0.2V forces zero-off-mode current (<0.5µA); must not float. |
| 2 - GND | Power Ground | Main return path for load and quiescent current; connects internally to EPAD for thermal conduction and noise reduction. |
| 3 - VIN | Input Supply | Accepts 2.25V–5.5V; requires 1µF ceramic input capacitor close to pin for high-frequency stability. |
| 4 - VOUT | Regulated Output | Delivers 2.7V ±1.0% to load; stable with ≥1µF X7R/X5R ceramic output capacitor; no minimum load required. |
| 5 - NC | No Connection | Internally unconnected; left floating on PCB - no routing or soldering required. |
| 6 - BYP | Reference Bypass | Connects to 0.1µF ceramic capacitor to GND to reduce output noise by 20µVrms and improve PSRR by up to 20dB. |
Key Features
| Feature | Design Value |
|---|---|
| µCap Ceramic Stability | Stable with only 1µF output capacitor - eliminates need for tantalum or large electrolytics, reducing board area and cost. |
| Zero-Off-Mode Current | Draws <0.5µA when EN ≤ 0.2V - ideal for battery-backed subsystems requiring nanowatt shutdown states. |
| Ultra-Fast Turn-On | 30µs typical startup with 1µF COUT and 0.1µF CBYP - meets timing requirements in wake-from-sleep power sequencing. |
| High Accuracy Over Temp | ±2.0% total output variation across –40°C to +125°C - suitable for industrial-grade portable instrumentation. |
| Integrated Protection | Combines current limit (300–900mA) and thermal shutdown - eliminates need for external fault-handling circuitry. |
Applications
| Cellular Phone Power Rails | Fiber Optic Transceiver Bias |
|---|---|
Use Scenario: Providing clean 2.7V supply to baseband processor I/O banks and RF front-end bias circuits in slim-profile smartphones. IC Role / Device Role / Timing Role: Primary LDO delivering regulated, low-noise voltage to sensitive analog and mixed-signal blocks during dynamic load transients. Use Value: 60mV dropout extends battery runtime by enabling operation down to 2.76V input; 20µVrms noise prevents SNR degradation in RF receivers. | Use Scenario: Powering laser diode drivers and photodiode amplifiers in SFP+ and QSFP optical modules operating in telecom infrastructure. IC Role / Device Role / Timing Role: Low-noise post-regulator stabilizing intermediate rail derived from a noisy DC/DC converter. Use Value: 85dB PSRR at 1kHz suppresses switching artifacts from upstream converters, ensuring BER compliance in 10Gbps data links. |
| Audio Codec Analog Supply | Notebook PC Subsystem Rail |
Use Scenario: Generating 2.7V analog supply for stereo DACs, headphone amplifiers, and microphone preamps in ultraportable laptops. IC Role / Device Role / Timing Role: Dedicated low-noise LDO isolating analog signal chain from noisy digital domains. Use Value: 20µVrms output noise preserves THD+N performance; ±1.0% accuracy maintains consistent gain calibration across temperature. | Use Scenario: Powering embedded controller (EC), touchpad IC, or smart battery fuel gauge in Windows-based notebooks. IC Role / Device Role / Timing Role: Always-on auxiliary LDO maintaining system management functions during S3/S4 sleep states. Use Value: 90µA quiescent current and zero-off-mode capability minimize standby power; no-load stability avoids brownout during idle periods. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2702E/TT | 250mA rated, 1.6µA quiescent current, 170mV dropout @ 250mA, SOT-23-3 package | Lacks enable pin and BYP pin; lower noise spec not published; unsuitable for noise-sensitive audio paths | Select when ultra-low IQ dominates over noise and PSRR requirements, and enable control is unnecessary. |
| Torex XC6206P272MR-G | 150mA rated, 3.5µA IQ, 300mV dropout @ 150mA, SOT-25 package, no BYP pin | Higher dropout limits usable input range; no bypass option limits noise performance; lacks thermal shutdown | Choose for cost-sensitive, non-critical bias rails where 2.7V tolerance is loose and thermal margin is ample. |
Compared with MCP1700T-2702E/TT and XC6206P272MR-G, the MIC5305-2.7YML-TR uniquely delivers 20µVrms noise + 85dB PSRR + 60mV dropout + enable + BYP in a 2mm × 2mm footprint - making it the only choice for compact, high-fidelity analog power in portable systems.
Availability
MIC5305-2.7YML-TR is available at Aetrix Electronics and suitable for cellular phone power rails, fiber optic transceiver bias, and audio codec analog supply requiring stable component supply across industrial temperature ranges and long production lifecycles.
Supply support for MIC5305-2.7YML-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
Micrel Inc. was a U.S.-based semiconductor company specializing in analog, power management, and timing solutions before its acquisition by Microchip Technology in 2015.
The MIC5305 product line was designed for ultra-compact, high-PSRR LDO applications in battery-powered portable electronics - emphasizing ceramic capacitor compatibility, zero-off-mode current, and sub-100µA quiescent operation.
FAQ
What is the maximum input voltage rating for the MIC5305-2.7YML-TR?
The MIC5305-2.7YML-TR has an absolute maximum input voltage of 6V, but its recommended operating input range is 2.25V to 5.5V. Exceeding 5.5V may trigger internal protection or cause reliability issues. The device achieves optimal PSRR and dropout performance within this specified range, and operation at 6V is strictly limited to transient conditions per the Absolute Maximum Ratings table.
Does the MIC5305-2.7YML-TR require an external bypass capacitor to function?
No, the MIC5305-2.7YML-TR operates stably without an external bypass capacitor on the BYP pin. However, connecting a 0.1µF ceramic capacitor from BYP to GND reduces output noise from unspecified baseline to 20µVrms and improves PSRR by up to 20dB at 1kHz. Omitting the BYP capacitor retains full regulation but sacrifices low-noise performance critical for audio and RF applications.
Can the MIC5305-2.7YML-TR be used with no load connected to VOUT?
Yes, the MIC5305-2.7YML-TR remains stable and in regulation with zero load - a feature explicitly confirmed in the Application Information section. This no-load stability supports applications like CMOS RAM keep-alive rails and always-on microcontroller backup supplies where output current may drop to 0µA during deep sleep modes without risking oscillation or dropout.
What is the thermal shutdown behavior of the MIC5305-2.7YML-TR?
The MIC5305-2.7YML-TR enters thermal shutdown when junction temperature reaches +125°C and automatically recovers once die temperature falls below the hysteresis threshold (~115°C). During shutdown, output is disabled and ground current drops to <0.5µA. This protection is fully integrated - no external components or configuration are needed, and recovery is seamless without requiring an enable cycle reset.
Is the MIC5305-2.7YML-TR pin-compatible with other variants in the MIC5305 family?
Yes, all MIC5305 fixed-output variants in the 6-pin 2mm × 2mm MLF® package - including MIC5305-2.7YML-TR, MIC5305-3.0YML-TR, and MIC5305-3.3YML-TR - share identical pinout, footprint, and thermal characteristics. Only the output voltage and top-side marking differ; no PCB redesign is needed when substituting between fixed-voltage versions within the same package type.
MIC5305-2.7YML-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):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- -
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- -
- PSRR:
- 85dB ~ 65dB (1kHz ~ 10kHz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 6-DFN (2x2)
MIC5305-2.7YML-TR FAQ
1.How can I place an order for MIC5305-2.7YML-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5305-2.7YML-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 MIC5305-2.7YML-TR reliable?
The price and inventory of MIC5305-2.7YML-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5305-2.7YML-TR is usually 5 days.
3.What payment methods are accepted for MIC5305-2.7YML-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5305-2.7YML-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5305-2.7YML-TR?
MIC5305-2.7YML-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5305-2.7YML-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 MIC5305-2.7YML-TR?
For technical support, including MIC5305-2.7YML-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5305-2.7YML-TR requirements.
6.How does Aetrix verify that MIC5305-2.7YML-TR is sourced from the original manufacturer or authorized distributors?
All MIC5305-2.7YML-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 MIC5305-2.7YML-TR meets industry standards.
7.What is the process for return or replacement of MIC5305-2.7YML-TR?
All MIC5305-2.7YML-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5305-2.7YML-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 MIC5305-2.7YML-TR part is unused and in its original packaging.
Return procedure for MIC5305-2.7YML-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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