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Microchip Technology MIC5380-LLYFT-TR
- Part No.:
- MIC5380-LLYFT-TR
- Manufacturer:
- Microchip Technology
- Package:
- 6-UFQFN, 6-TMLF®
- Datasheet:
-
MIC5380-LLYFT-TR.pdf
- Description:
- IC REG LINEAR 2.7V/2.7V 6TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:4,605
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Product details
Overview
MIC5380-LLYFT-TR from Micrel is a dual low-dropout linear regulator IC delivering two independent 150mA LDO outputs at fixed 2.7V/2.7V, housed in a 6-pin 1mm × 1mm Thin MLF® package. It features ±1% typical output accuracy, 155mV dropout at full load, and 32µA quiescent current per LDO-optimized for compact battery-powered systems like portable medical devices and USB peripherals.
For engineers reviewing the MIC5380-LLYFT-TR datasheet, MIC5380-LLYFT-TR pinout, MIC5380-LLYFT-TR application, or MIC5380-LLYFT-TR equivalent, key selection criteria include dual-output voltage matching, ultra-small footprint compatibility, zero-off-mode shutdown behavior, and stability with 0402 1µF ceramic capacitors-critical for space-constrained portable power rail design.
Technical Context
The MIC5380-LLYFT-TR integrates two CMOS-based LDO regulators sharing a common input (VIN) and ground (GND), each controlled by dedicated active-high enable pins (EN1, EN2). Its architecture supports independent regulation without cross-coupling, enabling selective powering of core logic and I/O rails.
It operates across 2.5V–5.5V input range, maintains regulation down to 100µA load, and achieves 60dB PSRR at 1kHz. Unlike the MIC5381 variant, it lacks auto-discharge circuitry-output capacitors remain charged when disabled.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7V / 2.7V - eliminates external feedback resistors; ensures matched rail generation for dual-core or split-domain SoC supplies. |
| Max Output Current | 150mA per LDO - sufficient to power low-power microcontrollers, sensors, or USB PHYs without thermal derating in 1mm² footprint. |
| Dropout Voltage | 155mV at 150mA - enables operation from single-cell Li-ion (3.0V min) or 3.3V system rails with >2.7V regulated output margin. |
| Accuracy | ±1% typical - meets tight tolerance requirements for ADC references or RF front-end biasing without post-regulation trimming. |
| Quiescent Current | 32µA per LDO - extends battery life in always-on monitoring modes (e.g., wearable health sensors). |
| PSRR | 60dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding VIN, critical for noise-sensitive analog subsystems. |
| Stability | With 1µF 0402 ceramic output capacitor - reduces BOM count and PCB area vs. larger capacitors; avoids ESR-dependent compensation. |
Pinout & Package
Package: 6-pin 1mm × 1mm Thin MLF® (RoHS-compliant, NiPdAu lead finish, halogen-free mold compound). Pin 1 identified by ▲ mark (top view).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 | VOUT1 | LDO1 regulated output - powers primary domain (e.g., MCU core); requires local 1µF ceramic decoupling. |
| 2 | VOUT2 | LDO2 regulated output - powers secondary domain (e.g., sensor interface); independently controllable via EN2. |
| 3 | EN2 | Active-high enable for LDO2 - logic high ≥1.2V enables output; must not float to prevent erratic shutdown. |
| 4 | EN1 | Active-high enable for LDO1 - allows staggered power-up sequencing (e.g., boot core before peripherals). |
| 5 | GND | Analog/digital ground reference - shared return path; requires low-inductance connection to PCB ground plane. |
| 6 | VIN | Input supply rail - accepts 2.5V–5.5V; requires 1µF ceramic input capacitor adjacent to pin 6. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small 1mm × 1mm Thin MLF® | Reduces PCB area by >70% vs. standard SOT-23 packages-enables integration into Bluetooth headsets and hearing aids. |
| Independent enable control | Enables dynamic power gating: LDO1 can supply always-on RTC while LDO2 powers intermittently active GPS modules. |
| Zero-off-mode shutdown | Draws ≤1µA total when both EN1/EN2 = low-preserves battery charge during device sleep states. |
| Thermal & current protection | Integrated thermal shutdown and 200–550mA current limiting prevent damage during short-circuit or overtemperature events. |
| No-load stability | Remains in regulation with 0mA load-supports CMOS RAM keep-alive circuits without external bleed resistors. |
Applications
| Bluetooth Headset Power Management | USB Thumb Drive Dual-Rail Supply |
|---|---|
|
Use Scenario: Simultaneous powering of Bluetooth radio (1.8V) and audio codec (2.7V) from single Li-ion cell. IC Role / Device Role / Timing Role: Dual-LDO regulator providing isolated, low-noise 2.7V/2.7V rails with independent enable control for RF and audio subsystems. Use Value: Eliminates need for discrete regulators and saves >0.8mm² PCB area-critical for sub-20mm earbud form factors. |
Use Scenario: Regulating 3.3V USB VBUS down to stable 2.7V for NAND flash controller and 2.7V for USB transceiver logic. IC Role / Device Role / Timing Role: Dual-output LDO ensuring clean, sequenced power delivery to memory and interface blocks during plug-in detection. Use Value: 60dB PSRR at 1kHz prevents USB data corruption caused by VBUS ripple; 155mV dropout enables full-speed operation down to 3.0V input. |
| Portable Medical Handheld | GPS/PMP Power Subsystem |
|
Use Scenario: Powering low-power MCU (2.7V) and analog front-end (2.7V) in FDA-cleared glucose meter with 10-year shelf life. IC Role / Device Role / Timing Role: Precision dual-LDO delivering ±1% accurate rails for ADC reference and sensor biasing under varying temperature and load. Use Value: 32µA quiescent current per LDO extends battery life in standby mode; no-load stability avoids leakage-induced drift in keep-alive memory. |
Use Scenario: Generating matched 2.7V supplies for GPS baseband processor and PMP audio DAC from shared 3.6V battery rail. IC Role / Device Role / Timing Role: Compact dual-LDO enabling independent enable/disable of GPS and media playback functions to minimize system-level idle current. Use Value: Independent EN1/EN2 pins allow GPS to sleep while PMP remains active-reducing average system current by >40µA. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-LDO applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6216D272MR-G | Single-output 2.7V LDO (150mA), same 1mm × 1mm USP-6B package but no second regulator. | Requires two separate ICs to replicate dual-rail functionality-increases PCB area and BOM count. | Select only if system needs only one regulated rail or can accommodate dual single-channel devices. |
| Ricoh RP512F272D-TR-F | Dual 2.7V/2.7V LDO in 1.2mm × 1.2mm DFN-8 package; 250mA per channel; 200mV dropout at 150mA. | Larger footprint (+44% area) and higher dropout limit minimum input voltage to 2.9V for full-load operation. | Choose when higher output current headroom or enhanced thermal performance justifies larger layout allocation. |
Compared with XC6216D272MR-G and RP512F272D-TR-F, the MIC5380-LLYFT-TR uniquely delivers matched dual 2.7V outputs in the smallest industry-standard footprint (1mm²) with lowest dropout (155mV) and lowest quiescent current (32µA/LDO), making it optimal for ultra-compact, battery-sensitive designs where rail count and size are constrained.
Availability
MIC5380-LLYFT-TR is available at Aetrix Electronics and suitable for Bluetooth headsets, portable medical handhelds, and USB thumb drives requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5380-LLYFT-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 power management, timing, and networking ICs before its acquisition by Microchip Technology in 2015. Its LDO portfolio emphasized ultra-low-power, miniature-package solutions.
The MIC5380 family was designed specifically for space-constrained portable electronics needing dual, independently controlled, high-accuracy LDOs-targeting applications where board area, battery life, and output precision were non-negotiable.
FAQ
What output voltages does the MIC5380-LLYFT-TR provide?
The MIC5380-LLYFT-TR provides two fixed 2.7V outputs-one on VOUT1 and one on VOUT2-as indicated by the "LL" marking code in the ordering table. These are factory-trimmed and require no external components for regulation. The MIC5380-LLYFT-TR is not adjustable; alternative variants (e.g., MIC5380-NGYFT) offer different voltage combinations.
Does the MIC5380-LLYFT-TR include auto-discharge functionality?
No, the MIC5380-LLYFT-TR does not include auto-discharge circuitry. That feature is exclusive to the MIC5381 variant (e.g., MIC5381-MGYFT). When EN1 or EN2 is pulled low, the MIC5380-LLYFT-TR enters zero-off-mode (≤1µA total current) but leaves its output capacitors charged-requiring external discharge paths if rapid voltage decay is needed.
What is the recommended input and output capacitor for the MIC5380-LLYFT-TR?
The MIC5380-LLYFT-TR requires a 1µF X5R or X7R ceramic capacitor (0402 size) from VIN to GND and 1µF from each VOUT to GND. These values ensure stability across temperature and load; Y5V dielectrics are discouraged due to >60% capacitance loss over operating range. The MIC5380-LLYFT-TR is optimized for this exact configuration.
Can the MIC5380-LLYFT-TR operate with no load on either output?
Yes, the MIC5380-LLYFT-TR remains stable and in regulation with zero load on either or both outputs-a key differentiator from many LDOs. This capability supports applications like CMOS RAM keep-alive circuits or always-on sensor biasing without adding bleed resistors, preserving battery energy in MIC5380-LLYFT-TR-based designs.
What is the thermal performance of the MIC5380-LLYFT-TR at full load?
With θJA = 150°C/W, the MIC5380-LLYFT-TR dissipates ~0.162W at 150mA per LDO from 3.6V input to 2.7V output. At TA = 85°C, junction temperature reaches ~107°C-within the –40°C to +125°C rating. For sustained 150mA dual-load operation, ambient must stay ≤98°C; derating is advised above that threshold to avoid thermal shutdown in the MIC5380-LLYFT-TR.
MIC5380-LLYFT-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 6-UFQFN, 6-TMLF®
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 5.5V
- Voltage - Output (Min/Fixed):
- 2.7V, 2.7V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.31V @ 150mA, 0.31V @ 150mA
- Current - Output:
- 150mA, 150mA
- Current - Quiescent (Iq):
- 45 µA
- Current - Supply (Max):
- 85 µA
- PSRR:
- 60dB (1kHz)
- 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-TMLF® (1x1)
MIC5380-LLYFT-TR FAQ
1.How can I place an order for MIC5380-LLYFT-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5380-LLYFT-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 MIC5380-LLYFT-TR reliable?
The price and inventory of MIC5380-LLYFT-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5380-LLYFT-TR is usually 5 days.
3.What payment methods are accepted for MIC5380-LLYFT-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5380-LLYFT-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5380-LLYFT-TR?
MIC5380-LLYFT-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5380-LLYFT-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 MIC5380-LLYFT-TR?
For technical support, including MIC5380-LLYFT-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5380-LLYFT-TR requirements.
6.How does Aetrix verify that MIC5380-LLYFT-TR is sourced from the original manufacturer or authorized distributors?
All MIC5380-LLYFT-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 MIC5380-LLYFT-TR meets industry standards.
7.What is the process for return or replacement of MIC5380-LLYFT-TR?
All MIC5380-LLYFT-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5380-LLYFT-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 MIC5380-LLYFT-TR part is unused and in its original packaging.
Return procedure for MIC5380-LLYFT-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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