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Microchip Technology MIC5205-2.9YM5-TR
- Part No.:
- MIC5205-2.9YM5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5205-2.9YM5-TR.pdf
- Description:
- IC REG LINEAR 2.9V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:1,855
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Product details
Overview
MIC5205-2.9YM5-TR from Microchip Technology is a fixed-output 2.9 V, 150 mA ultra-low-noise low-dropout (LDO) linear voltage regulator in a 5-lead SOT-23 package. It delivers ±1% output voltage accuracy, 165 mV dropout at full load, 260 nV/√Hz output noise with bypass capacitor, and features logic-controlled enable, reverse-battery protection, and thermal/current limiting - optimized for battery-powered portable electronics requiring clean, stable power.
For engineers reviewing the MIC5205-2.9YM5-TR datasheet, MIC5205-2.9YM5-TR pinout, MIC5205-2.9YM5-TR application, or MIC5205-2.9YM5-TR equivalent, key selection criteria include guaranteed 150 mA output under 165 mV dropout, sub-1% initial accuracy across –40°C to +125°C, ultra-low ground current (600 µA at 100 mA), and 470 pF reference bypass support for noise-sensitive analog/RF subsystems.
Technical Context
The MIC5205-2.9YM5-TR integrates a bandgap reference with dedicated BYP pin for external 470 pF capacitor connection, reducing output noise by improving reference stability. Its CMOS/TTL-compatible EN input enables shutdown with near-zero off-mode current (≤5 µA).
Regulator operation maintains tight line regulation (0.012%/V) and load regulation (0.2% over 0.1–150 mA), while thermal shutdown and current limiting protect against fault conditions. Ground current rises only slightly in dropout, extending battery life in handheld devices.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9 V ±1% at 25°C; ensures precise biasing for 2.8–3.0 V logic rails and RF front-end ICs |
| Max Output Current | 150 mA continuous; supports moderate-power microcontrollers, sensors, and analog signal chains |
| Dropout Voltage | 165 mV at 150 mA; enables regulation from 3.065 V input, critical for single-cell Li-ion or Li-poly systems |
| Output Noise | 260 nV/√Hz (with 470 pF BYP cap); meets stringent requirements for ADC references and low-phase-noise oscillators |
| PSRR | 75 dB at 100 Hz; suppresses switching noise from upstream DC/DC converters in hybrid power architectures |
| Quiescent Current | 600 µA at 100 mA load; balances efficiency and transient response in always-on subsystems |
| Operating Temp | –40°C to +125°C junction; qualified for automotive infotainment and industrial edge nodes |
Pinout & Package
Package: 5-Lead SOT-23 (M5), surface-mount, Pb-free, 2.2 mm × 1.35 mm footprint with 0.95 mm height and 0.95 mm pin pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - IN | Supply Input | Accepts 2.5 V to 16 V input; requires ≥1 µF ceramic or tantalum capacitor to GND for stability |
| 2 - GND | Ground Reference | Common return path for load, bypass, and enable circuits; must be low-impedance PCB plane |
| 3 - EN | Enable/Shutdown Input | CMOS-compatible control: ≥2.0 V enables regulator; ≤0.4 V shuts down with ≤5 µA quiescent current |
| 4 - BYP | Reference Bypass | Connects to internal bandgap reference; 470 pF to GND reduces output noise by >20 dB |
| 5 - OUT | Regulated Output | Delivers 2.9 V ±1%; requires ≥2.2 µF output capacitor when BYP is used for stability |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Noise Operation | 260 nV/√Hz output noise with 470 pF BYP capacitor - enables high-resolution ADCs and low-jitter clock buffers |
| Reverse-Battery Protection | Withstands –20 V on IN pin without damage - eliminates need for external series diode in battery-reversal-prone designs |
| Tight Load Regulation | 0.2% variation from 0.1 mA to 150 mA load - maintains consistent voltage for mixed-signal SoCs with dynamic current draw |
| Zero Off-Mode Current | ≤5 µA shutdown current - preserves battery charge during extended sleep modes in IoT endpoints |
| Thermal Shutdown | Activates at +125°C junction temperature - prevents permanent damage during sustained overload or poor heatsinking |
Applications
| Portable Medical Sensors | Wearable Health Monitors |
|---|---|
Use Scenario: Continuous ECG/PPG signal acquisition in compact patch-style devices powered by coin-cell or thin-film batteries. IC Role / Device Role / Timing Role: Provides ultra-low-noise 2.9 V supply to analog front-end (AFE) and precision ADC, minimizing quantization error. Use Value: 260 nV/√Hz noise floor ensures <1 LSB noise contribution at 16-bit resolution, enabling clinical-grade waveform fidelity. | Use Scenario: Always-on heart rate and SpO₂ monitoring with Bluetooth LE connectivity and multi-day battery life. IC Role / Device Role / Timing Role: Powers MCU core, optical sensor array, and BLE radio subsystem with tight voltage tolerance and low quiescent current. Use Value: ±1% accuracy and 600 µA ground current at 100 mA sustain 7+ day runtime on CR2032 while maintaining RF link stability. |
| Industrial Handheld Terminals | Automotive Infotainment Accessories |
Use Scenario: Rugged barcode scanners and RFID readers operating in warehouses with wide ambient temperature swings. IC Role / Device Role / Timing Role: Regulates 2.9 V for microcontroller, display driver, and communication interface (UART/USB) from 3.3–12 V input rails. Use Value: –40°C to +125°C operation and 165 mV dropout ensure reliable boot and function across cold storage and hot vehicle cabins. | Use Scenario: Aftermarket dashcams and HUD adapters drawing power from 12 V automotive bus with high ripple and transients. IC Role / Device Role / Timing Role: Post-regulates switched 5 V rail to clean 2.9 V for image sensor and video processor cores. Use Value: 75 dB PSRR at 100 Hz rejects alternator ripple; reverse-battery protection survives jump-start misconnections. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-2902E/TO | 2.9 V fixed, 250 mA, 6 µA IQ, but no BYP pin or ultra-low-noise capability (45 µV RMS) | Lacks reference bypass support; unsuitable for noise-critical analog/RF loads | Select when lowest quiescent current is primary requirement and noise <500 nV/√Hz is acceptable |
| NCP1117ST2.9T3G | 2.9 V fixed, 1 A, 6 mA IQ, TO-220/SOT-223 package, higher dropout (1.2 V typical) | Higher thermal mass and larger footprint; not viable for space-constrained portable designs | Select when higher output current and robust thermal handling outweigh size/noise constraints |
Compared with MCP1700-2902E/TO and NCP1117ST2.9T3G, the MIC5205-2.9YM5-TR uniquely combines ultra-low noise (260 nV/√Hz), miniature SOT-23-5 packaging, and integrated reverse-battery protection - making it the only choice for compact, battery-powered systems demanding both precision analog performance and fault resilience.
Availability
MIC5205-2.9YM5-TR is available at Aetrix Electronics and suitable for portable medical sensors, wearable health monitors, industrial handheld terminals, and automotive infotainment accessories requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MIC5205-2.9YM5-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
Microchip Technology is a leading provider of microcontrollers, analog components, and Flash-IP solutions, serving automotive, industrial, consumer, and communications markets with high-reliability silicon and development tools.
The MIC5205 product line delivers ultra-low-noise, low-dropout linear regulators specifically engineered for battery-powered portable electronics where power integrity, size, and thermal efficiency are critical design constraints.
FAQ
What is the maximum input voltage rating for MIC5205-2.9YM5-TR?
The MIC5205-2.9YM5-TR has an absolute maximum input voltage rating of +20 V, but its recommended operating range is +2.5 V to +16 V. Exceeding +16 V risks exceeding thermal limits under load; for example, at 150 mA output and 2.9 V, VIN must remain ≤6.23 V on a standard SOT-23-5 layout to avoid thermal shutdown per Microchip's thermal calculations in DS20005785A-page 11.
Does MIC5205-2.9YM5-TR require an external bypass capacitor for stable operation?
Yes - MIC5205-2.9YM5-TR requires an output capacitor (≥2.2 µF tantalum or ≥1 µF ceramic if BYP is unused) between OUT and GND to prevent oscillation. Additionally, a 470 pF capacitor from BYP to GND is required to achieve the specified 260 nV/√Hz output noise; omitting it degrades noise performance but maintains basic regulation.
How does the EN pin function on MIC5205-2.9YM5-TR?
The EN pin on MIC5205-2.9YM5-TR is a CMOS/TTL-compatible enable input: applying ≥2.0 V enables regulation, while ≤0.4 V places MIC5205-2.9YM5-TR in shutdown mode with ≤5 µA quiescent current. If enable functionality is unnecessary, EN may be tied directly to IN (pin 1) per Figure 4-1 in the datasheet.
What is the dropout voltage specification for MIC5205-2.9YM5-TR at full load?
The dropout voltage for MIC5205-2.9YM5-TR is 165 mV (typical) at 150 mA load and 25°C, defined as the input-to-output differential at which VOUT drops 2% below nominal. At –40°C, dropout increases to 275 mV; at +125°C, it reaches 350 mV - all values confirmed in Table 1-1 of DS20005785A.
Is MIC5205-2.9YM5-TR compatible with ceramic output capacitors?
Yes - MIC5205-2.9YM5-TR is stable with ceramic output capacitors ≥1 µF when the BYP pin is left open, or ≥2.2 µF when a 470 pF capacitor is connected from BYP to GND. Microchip explicitly validates stability with ceramic, tantalum, and aluminum electrolytic types, noting that ESR should be ≤5 Ω and resonant frequency >1 MHz to avoid oscillation.
MIC5205-2.9YM5-TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 2.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.35V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 150 µA
- Current - Supply (Max):
- 2.5 mA
- PSRR:
- 75dB (100Hz)
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC5205-2.9YM5-TR FAQ
1.How can I place an order for MIC5205-2.9YM5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5205-2.9YM5-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 MIC5205-2.9YM5-TR reliable?
The price and inventory of MIC5205-2.9YM5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5205-2.9YM5-TR is usually 5 days.
3.What payment methods are accepted for MIC5205-2.9YM5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5205-2.9YM5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5205-2.9YM5-TR?
MIC5205-2.9YM5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5205-2.9YM5-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 MIC5205-2.9YM5-TR?
For technical support, including MIC5205-2.9YM5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5205-2.9YM5-TR requirements.
6.How does Aetrix verify that MIC5205-2.9YM5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5205-2.9YM5-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 MIC5205-2.9YM5-TR meets industry standards.
7.What is the process for return or replacement of MIC5205-2.9YM5-TR?
All MIC5205-2.9YM5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5205-2.9YM5-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 MIC5205-2.9YM5-TR part is unused and in its original packaging.
Return procedure for MIC5205-2.9YM5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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