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Microchip Technology MIC5366-2.9YMT-TZ
- Part No.:
- MIC5366-2.9YMT-TZ
- Manufacturer:
- Microchip Technology
- Package:
- 4-UDFN Exposed Pad, 4-TMLF®
- Datasheet:
-
MIC5366-2.9YMT-TZ.pdf
- Description:
- IC REG LINEAR 2.9V 150MA 4TMLF
- Quantity:
- Payment:
- Shipping:
Inventory:1,373
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Product details
Overview
MIC5366-2.9YMT-TZ from Micrel is a fixed-output 2.9V, 150mA low-dropout linear regulator in a 4-pin 1mm × 1mm Thin MLF package, featuring auto-discharge on disable, ±2% initial output accuracy, 155mV dropout at full load, and 29µA quiescent current - optimized for space-constrained portable electronics requiring stable low-noise biasing of RF ICs or memory retention circuits.
For engineers reviewing the MIC5366-2.9YMT-TZ datasheet, MIC5366-2.9YMT-TZ pinout, MIC5366-2.9YMT-TZ application, or MIC5366-2.9YMT-TZ equivalent, key selection criteria include enable-active-high logic compatibility, ultra-low off-state current (<1µA), thermal shutdown protection, and guaranteed stability with 1µF ceramic output capacitors across –40°C to +125°C.
Technical Context
The MIC5366-2.9YMT-TZ implements a CMOS-based LDO architecture with internal P-channel pass transistor, enabling low dropout and high PSRR (70dB @ 1kHz). Its auto-discharge function integrates an NFET between VOUT and GND, activated only when EN is low, ensuring rapid output voltage decay without external components.
It operates within 2.5V–5.5V input range and delivers regulated 2.9V output with line regulation ≤0.3% and load regulation ≤1% across 100µA–150mA. Thermal shutdown triggers at TJ ≥150°C, and current limiting activates at ≥200mA under short-circuit conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9V ±2% initial accuracy; maintains regulation over –40°C to +125°C junction temperature. |
| Max Output Current | 150mA guaranteed; supports sustained loads in compact battery-powered systems without thermal derating at ambient ≤95°C (YMT package). |
| Dropout Voltage | 155mV @ 150mA (VOUT ≥2.8V); enables operation from single Li-ion cell (3.0V min) while maintaining regulation. |
| Quiescent Current | 29µA typical @ 100µA load; reduces standby power in always-on subsystems such as real-time clocks or sensor wake-up circuits. |
| PSRR | 70dB @ 1kHz; suppresses ripple from noisy switchers or shared PMIC rails feeding sensitive analog/RF blocks. |
| Auto-Discharge | 30Ω NFET path enabled only when EN = low; discharges 1µF output cap to <100mV in <1ms, preventing unintended back-powering. |
| Enable Logic | Active-high CMOS input; VIH ≥1.2V, VIL ≤0.2V; requires no pull-up for default-off behavior in battery-critical designs. |
Pinout & Package
Package: 4-pin 1mm × 1mm Thin MLF (RoHS-compliant, NiPdAu lead finish, exposed heatsink pad).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VOUT) | Regulated output node | Delivers 2.9V to load; requires 1µF X5R/X7R ceramic capacitor to ground for stability. |
| 2 (GND) | Analog/digital reference return | Must be connected directly to low-impedance ground plane; ties to exposed heatsink pad for thermal performance. |
| 3 (EN) | Digital enable control input | CMOS-compatible active-high signal; floating state prohibited - must be pulled high or low via external resistor. |
| 4 (VIN) | Unregulated input supply | Accepts 2.5V–5.5V; requires 1µF ceramic decoupling capacitor placed adjacent to pin. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-small footprint | 1mm² PCB area (75% smaller than SC-70), enabling placement in tight spaces near RF transceivers or microcontrollers. |
| Auto-discharge circuit | Integrated 30Ω NFET eliminates need for external discharge resistor, reducing BOM count and board area in power-gated domains. |
| Low-noise regulation | 200µVRMS output noise (10Hz–100kHz); suitable for powering PLLs, ADC references, or low-phase-noise oscillators. |
| Zero-off-mode current | <1µA shutdown current; extends battery life in devices with long sleep intervals (e.g., IoT sensors, wearables). |
| Full fault protection | Thermal shutdown + foldback current limiting prevent damage during overload or poor heatsinking in sealed enclosures. |
Applications
| Mobile Phone Baseband Power | Digital Camera Image Sensor Bias |
|---|---|
Use Scenario: Supplying clean 2.9V bias to baseband processor I/O banks during LTE/Wi-Fi coexistence testing. IC Role / Device Role / Timing Role: Low-noise LDO providing isolated, ripple-free VIO rail independent of noisy PMIC switching outputs. Use Value: 70dB PSRR prevents digital switching noise from modulating RF receiver sensitivity, preserving EVM performance. | Use Scenario: Powering CMOS image sensor analog front-end during high-speed burst capture mode. IC Role / Device Role / Timing Role: Stable 2.9V source with fast turn-on (<125µs) and minimal load transient droop. Use Value: 155mV dropout ensures regulation even as battery sags to 3.05V, maintaining consistent pixel response and SNR. |
| GPS Module RTC Keep-Alive | Handheld PDA Memory Retention |
Use Scenario: Maintaining real-time clock operation during main system shutdown in automotive GPS loggers. IC Role / Device Role / Timing Role: Always-on LDO delivering 2.9V to RTC circuitry with zero-load stability and <1µA shutdown current. Use Value: 29µA quiescent current enables >10-year coin-cell lifetime; auto-discharge prevents backfeed into disabled GPS RF section. | Use Scenario: Preserving SRAM contents during suspend-to-RAM in legacy PDA platforms with 2.9V memory interface. IC Role / Device Role / Timing Role: Low-drift, low-noise 2.9V supply ensuring data integrity across wide temperature (-40°C to +85°C). Use Value: ±2% initial accuracy and ±3% over temperature guarantee valid memory read/write margins without recalibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MIC5365-2.9YMT | No auto-discharge circuit; otherwise identical electrical specs, package, and pinout. | Not suitable where rapid VOUT discharge is required to prevent back-powering or meet safety standards. | Select MIC5365-2.9YMT only if discharge is handled externally or unnecessary in the system architecture. |
| Torex XC6206P292MR-G | Same 2.9V output, 150mA rating, SOT-23-5 package; lacks enable pin and auto-discharge; higher 35µA IQ. | Requires external enable logic and discharge path; less flexible for dynamic power sequencing in multi-rail systems. | Choose XC6206P292MR-G only for cost-sensitive, static-bias applications without sequencing or shutdown requirements. |
Compared with MIC5365-2.9YMT and XC6206P292MR-G, the MIC5366-2.9YMT-TZ uniquely combines integrated auto-discharge, enable control, and ultra-low quiescent current in the smallest possible footprint - making it optimal for portable systems demanding both power efficiency and controlled power-down behavior.
Availability
MIC5366-2.9YMT-TZ is available at Aetrix Electronics and suitable for mobile phones, digital cameras, GPS modules, and handheld PDAs requiring stable component supply with guaranteed long-term manufacturability and RoHS compliance.
Supply support for MIC5366-2.9YMT-TZ 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 mixed-signal ICs before its acquisition by Microchip Technology in 2015.
The MIC5365/6 family was designed specifically for ultra-compact, battery-powered portable electronics needing high PSRR, low IQ, and robust thermal protection in sub-1mm² packages.
FAQ
What is the maximum input voltage rating for the MIC5366-2.9YMT-TZ?
The MIC5366-2.9YMT-TZ has an absolute maximum input voltage of 6V, but its specified operating range is 2.5V to 5.5V. Exceeding 5.5V may cause permanent damage or violate safe operating area limits, especially under load. The device's thermal shutdown activates at 150°C junction temperature, providing protection during transient overvoltage events within the absolute max rating.
Does the MIC5366-2.9YMT-TZ require external capacitors, and what type is recommended?
Yes, the MIC5366-2.9YMT-TZ requires both input and output capacitors: 1µF X5R or X7R ceramic (0402 size) for each, placed as close as possible to VIN/GND and VOUT/GND pins. Y5V or Z5U dielectrics are not recommended due to excessive capacitance loss over temperature. The regulator remains stable with no load and does not require ESR tuning, unlike older LDO architectures.
How does the auto-discharge feature of the MIC5366-2.9YMT-TZ operate?
The MIC5366-2.9YMT-TZ activates its internal 30Ω NFET discharge path only when the EN pin is driven low (≤0.2V). This pulls VOUT to GND, discharging a 1µF output capacitor to <100mV in under 1ms. The NFET is fully disabled when EN is high, eliminating leakage paths during normal operation - a key differentiator from MIC5365-2.9YMT, which lacks this function.
What is the thermal resistance (θJA) of the MIC5366-2.9YMT-TZ in its 1mm × 1mm Thin MLF package?
The MIC5366-2.9YMT-TZ in the YMT package has a junction-to-ambient thermal resistance (θJA) of 240°C/W under standard JEDEC 2-layer board conditions. With 150mA load and 0.8V input-output differential, power dissipation is ~120mW, allowing a maximum ambient temperature of ~95°C before reaching the 125°C junction limit - assuming proper PCB copper pour under the exposed pad.
Is the MIC5366-2.9YMT-TZ pin-compatible with other members of the MIC5365/6 family?
Yes, all MIC5366 variants in the 4-pin 1mm × 1mm Thin MLF (YMT) package share identical pinout: Pin 1 = VOUT, Pin 2 = GND, Pin 3 = EN, Pin 4 = VIN. This allows direct substitution across output voltages (e.g., MIC5366-2.8YMT → MIC5366-2.9YMT) without layout changes, provided the application tolerates the voltage difference and thermal profile remains acceptable.
MIC5366-2.9YMT-TZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 4-UDFN Exposed Pad, 4-TMLF®
- 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:
- 4-TMLF® (1x1)
MIC5366-2.9YMT-TZ FAQ
1.How can I place an order for MIC5366-2.9YMT-TZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5366-2.9YMT-TZ 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 MIC5366-2.9YMT-TZ reliable?
The price and inventory of MIC5366-2.9YMT-TZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5366-2.9YMT-TZ is usually 5 days.
3.What payment methods are accepted for MIC5366-2.9YMT-TZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5366-2.9YMT-TZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5366-2.9YMT-TZ?
MIC5366-2.9YMT-TZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5366-2.9YMT-TZ 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 MIC5366-2.9YMT-TZ?
For technical support, including MIC5366-2.9YMT-TZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5366-2.9YMT-TZ requirements.
6.How does Aetrix verify that MIC5366-2.9YMT-TZ is sourced from the original manufacturer or authorized distributors?
All MIC5366-2.9YMT-TZ 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 MIC5366-2.9YMT-TZ meets industry standards.
7.What is the process for return or replacement of MIC5366-2.9YMT-TZ?
All MIC5366-2.9YMT-TZ units undergo pre-shipment inspection (PSI). If there is an issue with MIC5366-2.9YMT-TZ, 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 MIC5366-2.9YMT-TZ part is unused and in its original packaging.
Return procedure for MIC5366-2.9YMT-TZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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