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Microchip Technology MIC5366-2.9YC5-TR
- Part No.:
- MIC5366-2.9YC5-TR
- Manufacturer:
- Microchip Technology
- Package:
- 5-TSSOP, SC-70-5, SOT-353
- Datasheet:
-
MIC5366-2.9YC5-TR.pdf
- Description:
- IC REG LINEAR 2.9V 150MA SC70-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,650
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Product details
Overview
MIC5366-2.9YC5-TR from Micrel is a fixed-output 2.9V, 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-optimized for space-constrained portable electronics requiring fast transient response and ultra-low shutdown current.
For engineers reviewing the MIC5366-2.9YC5-TR datasheet, MIC5366-2.9YC5-TR pinout, MIC5366-2.9YC5-TR application, or MIC5366-2.9YC5-TR equivalent, key selection criteria include its 2.5V–5.5V input range, SC-70-5 thermal resistance (256.5°C/W), auto-discharge NFET (30Ω), and guaranteed stability with 1µF ceramic output capacitors.
Technical Context
The MIC5366-2.9YC5-TR integrates a CMOS-based active-high enable circuit and an internal NFET discharge path tied to the EN pin. When EN is pulled low, the output is actively discharged through a 30Ω path, preventing residual voltage hold-up in battery-powered systems.
Its bandgap reference and error amplifier deliver ±2% output accuracy over –40°C to +125°C, while high PSRR (70dB @ 1kHz) and low noise (200µVRMS, 10Hz–100kHz) support noise-sensitive analog and RF subsystems. Input voltage regulation is maintained across 2.5V–5.5V with <0.3% line regulation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9V ±2% initial accuracy; ensures stable core voltage for 2.8–3.0V logic rails without external feedback. |
| Max Output Current | 150mA guaranteed; supports moderate-power microcontrollers, sensors, and RF transceivers in compact designs. |
| Dropout Voltage | 155mV @ 150mA; enables operation from 3.05V input when VOUT = 2.9V-critical for single-cell Li-ion or Li-poly systems. |
| Quiescent Current | 29µA typical; minimizes battery drain during active operation in always-on sensor nodes or standby modes. |
| Shutdown Current | 0.05–1µA; achieves near-zero power state when EN = low, extending shelf life and sleep-mode battery runtime. |
| PSRR | 70dB @ 1kHz; suppresses switching noise from DC-DC converters feeding the LDO input, preserving signal integrity. |
| Auto-Discharge | 30Ω NFET path enabled only when EN = low; discharges output capacitor rapidly (<1ms for 1µF), eliminating floating voltage risks. |
Pinout & Package
SC-70-5 package (5-pin, 2.0mm × 1.25mm footprint, 0.65mm pitch), RoHS-compliant, Pb-free NiPdAu lead finish, exposed heatsink pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Supply Input | Accepts 2.5V–5.5V input; requires 1µF X5R/X7R ceramic capacitor to ground for stability and high-frequency noise filtering. |
| 2 (GND) | Ground Reference | Primary return path for load and quiescent current; must be low-impedance connection to minimize ground bounce. |
| 3 (EN) | Enable Input | CMOS-compatible active-high control: ≥1.2V = ON, ≤0.2V = OFF with auto-discharge activation; must not float. |
| 4 (VOUT) | Regulated Output | Delivers 2.9V ±2% to load; stable with ≥1µF ceramic output capacitor; no minimum load required. |
| 5 (NC) | No Connect | Internally unconnected; no electrical function-must remain unconnected per design specification. |
Key Features
| Feature | Design Value |
|---|---|
| Auto-Discharge Circuit | 30Ω NFET path activated only during EN = low state-ensures rapid, controlled output discharge without external components. |
| Ultra-Small SC-70-5 Package | 2.0mm × 1.25mm footprint with 0.65mm pitch-reduces PCB area by >75% vs. standard SOT-23, enabling high-density portable layouts. |
| Stable with 1µF Ceramic Capacitors | Eliminates need for large or specialized output capacitance-supports cost-effective, miniature X5R/X7R 0402 MLCCs. |
| High PSRR & Low Noise | 70dB PSRR @ 1kHz and 200µVRMS integrated noise (10Hz–100kHz)-preserves ADC reference stability and RF receiver sensitivity. |
| Thermal & Current Protection | Internal thermal shutdown and foldback current limiting prevent damage under overload or high ambient temperature conditions. |
Applications
| Mobile Phone Power Management | Digital Camera Sensor Biasing |
|---|---|
|
Use Scenario: Supplying 2.9V bias to CMOS image sensor analog front-end and ISP core in slim smartphone modules. IC Role / Device Role / Timing Role: Primary low-noise post-regulator delivering clean, stable voltage after main PMIC buck converter. Use Value: 70dB PSRR rejects switching noise from upstream DC-DC; 155mV dropout enables operation down to 3.05V input-extending usable battery range. |
Use Scenario: Providing regulated 2.9V to high-speed image signal processor (ISP) and flash memory interface in compact digital cameras. IC Role / Device Role / Timing Role: Fixed-output LDO ensuring precise voltage for timing-critical ISP clock domains and memory I/O buffers. Use Value: ±2% accuracy maintains signal-to-noise ratio in analog pixel processing; 29µA quiescent current reduces standby power in instant-on mode. |
| GPS Receiver Front-End | Handheld PDA Core Logic |
|
Use Scenario: Powering GPS RF front-end LNA and baseband IC in battery-operated navigation devices. IC Role / Device Role / Timing Role: Ultra-low-noise local regulator isolating sensitive RF stages from noisy system power rails. Use Value: 200µVRMS output noise prevents phase noise degradation in GPS LO synthesis; auto-discharge clears residual voltage before cold start. |
Use Scenario: Delivering 2.9V to ARM-based application processor core and SRAM keep-alive circuitry in legacy PDAs. IC Role / Device Role / Timing Role: Always-on LDO maintaining real-time clock and memory retention during deep-sleep states. Use Value: Zero-off-mode current (<1µA) eliminates battery leakage; no-load stability ensures reliable RAM retention without dummy loads. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5365-2.9YC5-TR | No auto-discharge; identical pinout, package, and electrical specs except EN-driven discharge path. | Suitable where output discharge is handled externally or unnecessary-lower BOM count in non-critical hold-up scenarios. | Select when auto-discharge adds no value and cost minimization is prioritized. |
| Torex XC6206P292MR-G | Same 2.9V output, 150mA rating, SC-70-5 package, but lacks auto-discharge and has higher 35µA quiescent current. | Compatible in footprint and function for basic regulation; not suitable for systems requiring rapid output discharge on disable. | Choose for legacy compatibility where Micrel supply chain constraints exist-verify thermal performance (θJA = 280°C/W). |
Compared with MIC5365-2.9YC5-TR and XC6206P292MR-G, the MIC5366-2.9YC5-TR uniquely provides integrated 30Ω auto-discharge without external FETs or resistors-reducing component count and PCB area while ensuring deterministic output collapse during power sequencing.
Availability
MIC5366-2.9YC5-TR is available at Aetrix Electronics and suitable for mobile phones, digital cameras, GPS receivers, and handheld PDAs requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant packaging.
Supply support for MIC5366-2.9YC5-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, analog, and RF solutions before its acquisition by Microchip Technology in 2015.
The MIC5365/6 family was designed specifically for ultra-compact, battery-powered portable electronics demanding high PSRR, low quiescent current, and rapid enable/disable control-targeting space- and power-constrained applications like smartphones and wearables.
FAQ
What is the auto-discharge behavior of the MIC5366-2.9YC5-TR?
The MIC5366-2.9YC5-TR activates an internal 30Ω NFET discharge path between VOUT and GND only when the EN pin is driven low. This rapidly discharges the output capacitor-typically clearing 2.9V to <100mV within 1ms for a 1µF load-eliminating residual voltage that could cause latch-up or unintended wake-up in downstream circuitry. The discharge path is disabled when EN is high, and no external components are required.
Can the MIC5366-2.9YC5-TR operate with input voltages below 2.9V?
No-the MIC5366-2.9YC5-TR requires a minimum input voltage of 2.5V, but its dropout voltage is 155mV at 150mA. To maintain regulation at 2.9V output, VIN must be ≥3.055V. Below this threshold, the output drops linearly with input; operation below 2.5V violates Absolute Maximum Ratings and may cause undefined behavior or damage.
Is the MIC5366-2.9YC5-TR stable with ceramic capacitors smaller than 1µF?
No-the MIC5366-2.9YC5-TR is characterized and guaranteed stable only with ≥1µF ceramic output capacitance (X5R/X7R dielectric). Using smaller values-such as 0.47µF-may cause oscillation or poor transient response due to insufficient phase margin. Input capacitance also requires 1µF minimum for stability and high-frequency noise suppression.
What is the thermal performance of the MIC5366-2.9YC5-TR in SC-70-5 package?
The MIC5366-2.9YC5-TR in SC-70-5 has a junction-to-ambient thermal resistance (θJA) of 256.5°C/W. At 150mA load with 3.6V input and 2.9V output, power dissipation is ~105mW. Under these conditions, the maximum allowable ambient temperature is ~97°C before reaching the 125°C junction limit-assuming standard JEDEC 2-layer board layout without copper pour enhancement.
Does the MIC5366-2.9YC5-TR require a minimum load current to maintain regulation?
No-the MIC5366-2.9YC5-TR remains stable and in regulation with zero load current. This "no-load stability" is explicitly verified and critical for applications such as CMOS RAM keep-alive circuits, real-time clocks, or sensor biasing where output must remain accurate even when downstream circuitry is powered off.
MIC5366-2.9YC5-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):
- 2.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.31V @ 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
MIC5366-2.9YC5-TR FAQ
1.How can I place an order for MIC5366-2.9YC5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5366-2.9YC5-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 MIC5366-2.9YC5-TR reliable?
The price and inventory of MIC5366-2.9YC5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5366-2.9YC5-TR is usually 5 days.
3.What payment methods are accepted for MIC5366-2.9YC5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5366-2.9YC5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5366-2.9YC5-TR?
MIC5366-2.9YC5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5366-2.9YC5-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 MIC5366-2.9YC5-TR?
For technical support, including MIC5366-2.9YC5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5366-2.9YC5-TR requirements.
6.How does Aetrix verify that MIC5366-2.9YC5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5366-2.9YC5-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 MIC5366-2.9YC5-TR meets industry standards.
7.What is the process for return or replacement of MIC5366-2.9YC5-TR?
All MIC5366-2.9YC5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5366-2.9YC5-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 MIC5366-2.9YC5-TR part is unused and in its original packaging.
Return procedure for MIC5366-2.9YC5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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