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Microchip Technology MIC5366-2.7YC5-TR
- Part No.:
- MIC5366-2.7YC5-TR
- Manufacturer:
- Microchip Technology
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MIC5366-2.7YC5-TR.pdf
- Description:
- IC REG LINEAR 2.7V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,388
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Product details
Overview
MIC5366-2.7YC5-TR from Micrel is a fixed-output 2.7V, 150mA low-dropout linear regulator in SC-70-5 package with auto-discharge functionality activated on enable pin deactivation. It delivers ±2% initial output accuracy, 155mV dropout at full load, and 29µA quiescent current-enabling stable power for ultra-low-power portable systems such as GPS receivers and handheld PMPs.
For engineers reviewing the MIC5366-2.7YC5-TR datasheet, MIC5366-2.7YC5-TR pinout, MIC5366-2.7YC5-TR application, or MIC5366-2.7YC5-TR equivalent, key selection criteria include its 2.5V–5.5V input range, zero-off-mode shutdown current (<1µA), high PSRR (70dB), and compatibility with 1µF ceramic output capacitors without external compensation.
Technical Context
The MIC5366-2.7YC5-TR integrates a CMOS-based control circuit with active-high enable logic and an internal NFET auto-discharge path tied to the VOUT pin. Its architecture supports fast turn-on time (50–125µs) and maintains regulation down to zero load while rejecting supply ripple up to 10kHz.
It operates across –40°C to +125°C junction temperature and includes thermal shutdown and foldback current limiting. The SC-70-5 package provides θJA = 256.5°C/W, enabling 150mA continuous output under defined ambient conditions when VIN ≤ 5.5V and dropout margin ≥155mV.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.7V ±2% initial accuracy ensures precise biasing for 2.7V I/O domains or low-voltage microcontrollers. |
| Max Output Current | 150mA guaranteed-supports power delivery to single-core MCUs, RF transceivers, or sensor signal chains. |
| Dropout Voltage | 155mV @ 150mA-enables operation from 2.855V minimum input, critical for battery-powered systems near end-of-life. |
| Quiescent Current | 29µA typical-minimizes standby power loss in always-on subsystems like real-time clocks or wake-up controllers. |
| PSRR | 70dB @ DC–1kHz-suppresses switching noise from adjacent DC/DC converters in mixed-signal PCB layouts. |
| Enable Threshold | Logic high ≥1.2V, logic low ≤0.2V-compatible with 1.8V/3.3V GPIO without level-shifting. |
| Auto-Discharge | Active when EN = low; 30Ω NFET discharges VOUT-prevents residual voltage hold-up in power sequencing. |
Pinout & Package
SC-70-5 package: 1.25mm × 1.75mm footprint, 0.65mm pitch, exposed pad not electrically connected. Pin 1 = VIN, Pin 2 = GND, Pin 3 = EN, Pin 4 = VOUT, Pin 5 = NC (no internal connection).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Supply Input | Accepts 2.5V–5.5V input; requires 1µF X5R/X7R ceramic decoupling capacitor to ground for stability. |
| GND (Pin 2) | Ground Reference | Primary return path for load and quiescent current; must connect directly to low-impedance ground plane. |
| EN (Pin 3) | Enable Control | CMOS-compatible active-high input; floating state prohibited-must be pulled high via resistor or driven by host MCU GPIO. |
| VOUT (Pin 4) | Regulated Output | Delivers fixed 2.7V; connects to 1µF ceramic output capacitor and load; auto-discharged when EN = low. |
| NC (Pin 5) | No Connect | Internally unconnected; no electrical function-may remain unconnected or tied to GND for mechanical stability. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-Discharge Circuit | 30Ω internal NFET actively pulls VOUT to GND during shutdown-eliminates need for external bleed resistors in power-gated rails. |
| Ultra-Low Quiescent Current | 29µA typical operating current enables >1-year battery life in coin-cell–powered devices at 100µA average load. |
| Stable with 1µF Ceramic Cap | No ESR requirements or external compensation needed-reduces BOM count and PCB area vs. legacy LDOs requiring 10µF tantalum. |
| High PSRR at Low Frequencies | 70dB rejection up to 1kHz-preserves analog sensor signal integrity in proximity to noisy digital supplies. |
| Thermal & Current Protection | Integrated foldback current limit and thermal shutdown prevent damage during overload or poor heatsinking. |
Applications
| GPS Receivers | Digital Cameras |
|---|---|
Use Scenario: Powering GNSS baseband ICs and RF front-end LNA stages in compact handheld navigation units. IC Role / Device Role / Timing Role: Primary 2.7V supply rail regulator with fast transient response to handle burst-mode GPS acquisition current spikes. Use Value: 155mV dropout allows operation down to 2.855V input-extending usable battery voltage range by ~120mV versus higher-dropout alternatives. | Use Scenario: Supplying image sensor interface circuitry and ISP core logic in sub-50mm-thick consumer cameras. IC Role / Device Role / Timing Role: Low-noise 2.7V bias source for analog pixel readout paths and ADC reference buffers. Use Value: 70dB PSRR suppresses switching noise from camera flash DC/DC converters, reducing image sensor pattern noise. |
| Handheld PMPs | Portable Medical Monitors |
Use Scenario: Regulating power to audio CODEC and touch controller in palm-sized media players. IC Role / Device Role / Timing Role: Always-on 2.7V rail with zero-off-mode shutdown-enabling instant wake-from-sleep without boot delay. Use Value: 29µA quiescent current minimizes standby drain, supporting multi-week playback battery life. | Use Scenario: Providing clean 2.7V supply to ECG front-end amplifiers and low-power Bluetooth LE radio in wearable vital sign monitors. IC Role / Device Role / Timing Role: Precision voltage source with ±2% accuracy ensuring consistent analog gain calibration across temperature. Use Value: Auto-discharge prevents unintended sensor bias retention after power-down-critical for clinical measurement repeatability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5365-2.7YC5-TR | No auto-discharge; identical pinout, specs, and package-same footprint but lacks VOUT discharge path. | Suitable where rapid VOUT decay is unnecessary; lower cost where discharge not required. | Select when system-level power sequencing handles VOUT discharge externally. |
| Torex XC6206P272MR-G | 2.7V fixed, 150mA, 120mV dropout @ 100mA, 1µA IQ, no enable pin-requires external ON/OFF control. | Lacks enable and auto-discharge; used in simpler, non-sequenced power rails. | Choose for ultra-low-IQ designs without enable control or discharge needs. |
Compared with MIC5365-2.7YC5-TR, the MIC5366-2.7YC5-TR adds essential auto-discharge for controlled power-down in sequenced systems, while the XC6206P272MR-G trades enable functionality for lower quiescent current-making each optimal for distinct power architecture priorities.
Availability
MIC5366-2.7YC5-TR is available at Aetrix Electronics and suitable for GPS receivers, digital cameras, handheld PMPs, and portable medical monitors requiring stable component supply, long-lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5366-2.7YC5-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 high-performance analog and power management ICs before its acquisition by Microchip Technology in 2015.
The MIC5365/6 family was designed specifically for space-constrained, battery-operated portable electronics demanding ultra-small footprint, low IQ, and robust transient performance-targeting mobile handsets, wearables, and IoT edge sensors.
FAQ
What is the maximum input voltage rating for the MIC5366-2.7YC5-TR?
The MIC5366-2.7YC5-TR has an absolute maximum input voltage of 6V, but its specified operating input range is 2.5V to 5.5V. Operation above 5.5V risks permanent damage even if within absolute max limits, and performance is only guaranteed within the 2.5V–5.5V range per the datasheet's Electrical Characteristics table. The MIC5366-2.7YC5-TR must be used with input filtering and clamping if exposed to transient overvoltage events.
Does the MIC5366-2.7YC5-TR require an external pull-up resistor on the EN pin?
Yes-the EN pin of the MIC5366-2.7YC5-TR is CMOS-compatible and must not be left floating. A pull-up resistor to VIN (typically 100kΩ–1MΩ) ensures reliable startup and prevents indeterminate output states. The MIC5366-2.7YC5-TR draws only 0.01–1µA through EN, so the resistor introduces negligible current loss. Direct GPIO drive from 1.8V or 3.3V logic is also valid per the enable threshold specification.
Can the MIC5366-2.7YC5-TR operate stably with no load connected to VOUT?
Yes-the MIC5366-2.7YC5-TR remains stable and in regulation with zero load, a feature explicitly validated in the Application Information section. This makes it suitable for CMOS RAM keep-alive circuits and other ultra-low-power standby functions where load current drops to 0µA. No minimum load requirement exists, unlike many older LDO architectures.
What is the purpose of the NC pin (Pin 5) on the MIC5366-2.7YC5-TR SC-70-5 package?
The NC (No Connect) pin on the MIC5366-2.7YC5-TR is internally unconnected and serves no electrical function. It may be left unconnected or tied to GND solely for mechanical reinforcement of the SC-70-5 package during reflow soldering. Connecting it to any voltage rail or signal violates the pin description and risks undefined behavior, as confirmed in the Pin Description table on page 5 of the datasheet.
How does the auto-discharge feature of the MIC5366-2.7YC5-TR behave during shutdown?
When the EN pin of the MIC5366-2.7YC5-TR is driven low, the internal 30Ω NFET connects VOUT to GND, actively discharging the output capacitor. This occurs only during shutdown-not during normal operation-and reduces VOUT to <100mV within milliseconds depending on COUT value. The MIC5366-2.7YC5-TR's auto-discharge eliminates external discharge circuitry, simplifying power sequencing in multi-rail systems.
MIC5366-2.7YC5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 5-TSSOP, SC-70-5, SOT-353
- 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):
- 0.38V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 39 µA
- Current - Supply (Max):
- -
- PSRR:
- 80dB ~ 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:
- SC-70-5
MIC5366-2.7YC5-TR FAQ
1.How can I place an order for MIC5366-2.7YC5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5366-2.7YC5-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 MIC5366-2.7YC5-TR reliable?
The price and inventory of MIC5366-2.7YC5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5366-2.7YC5-TR is usually 5 days.
3.What payment methods are accepted for MIC5366-2.7YC5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5366-2.7YC5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5366-2.7YC5-TR?
MIC5366-2.7YC5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5366-2.7YC5-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 MIC5366-2.7YC5-TR?
For technical support, including MIC5366-2.7YC5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5366-2.7YC5-TR requirements.
6.How does Aetrix verify that MIC5366-2.7YC5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5366-2.7YC5-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 MIC5366-2.7YC5-TR meets industry standards.
7.What is the process for return or replacement of MIC5366-2.7YC5-TR?
All MIC5366-2.7YC5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5366-2.7YC5-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 MIC5366-2.7YC5-TR part is unused and in its original packaging.
Return procedure for MIC5366-2.7YC5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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