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Microchip Technology MIC5205-3.1YM5-TR
- Part No.:
- MIC5205-3.1YM5-TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5205-3.1YM5-TR.pdf
- Description:
- IC REG LINEAR 3.1V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:2,554
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Product details
Overview
MIC5205-3.1YM5-TR from Microchip Technology is a fixed-output 3.1 V, 150 mA ultra-low-noise LDO regulator in SOT-23-5 package, featuring 17 mV dropout at light load, ±1% output voltage accuracy over –40°C to +125°C, and 260 nV/√Hz output noise with 470 pF BYP capacitor. It delivers stable power to noise-sensitive analog circuitry in portable battery-powered systems.
For engineers reviewing the MIC5205-3.1YM5-TR datasheet, MIC5205-3.1YM5-TR pinout, MIC5205-3.1YM5-TR application, or MIC5205-3.1YM5-TR equivalent, key selection criteria include dropout performance under 150 mA load, enable logic compatibility (CMOS/TTL), reverse-battery protection, zero off-mode current, and stability with ceramic or tantalum output capacitors ≥2.2 µF when using reference bypass.
Technical Context
The MIC5205-3.1YM5-TR integrates a bandgap reference with dedicated BYP pin for external 470 pF capacitor connection-reducing output noise by improving reference stability. Its internal current and thermal limiting protect against fault conditions while maintaining tight line regulation (0.004%/V) and load regulation (0.02% over 0.1–150 mA).
Designed for hand-held devices, it features logic-controlled EN input (VIH = 2.0 V, VIL = 0.4 V), reverse-battery protection, and ground current that increases only slightly in dropout-extending battery life. The regulator remains stable with no load and supports dual-supply operation with optional diode clamping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.1 V ±1% over –40°C to +125°C - ensures precise biasing of RF front-ends and ADC references without external feedback. |
| Max Output Current | 150 mA continuous - sufficient to power microcontroller cores, sensors, or RF transceivers in compact portable designs. |
| Dropout Voltage | 165 mV at 150 mA - enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline (3.2 V min) with margin. |
| Output Noise | 260 nV/√Hz (with 470 pF BYP + 2.2 µF COUT) - meets stringent requirements for PLLs, audio codecs, and precision ADCs. |
| PSRR | 75 dB at 100 Hz - suppresses ripple from upstream switching regulators in hybrid SMPS/LDO power architectures. |
| Quiescent Current | 600 µA at 100 mA load - minimizes standby power loss in always-on subsystems such as real-time clocks or sensor hubs. |
| Enable Threshold | VIL ≤ 0.4 V (shutdown), VIH ≥ 2.0 V (enable) - compatible with 3.3 V and 5 V logic families without level-shifting. |
Pinout & Package
Package: 5-Lead SOT-23 (M5), Pb-free, surface-mount, 2.9 mm × 1.6 mm footprint with 0.95 mm height and 0.95 mm pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Supply Input | Accepts 2.5 V to 16 V input; requires ≥1 µF input capacitor if >10" wire length or battery source. |
| 2 (GND) | Ground Reference | Common return for IN, OUT, BYP, and EN; must be low-impedance for noise control and thermal dissipation. |
| 3 (EN) | Enable/Shutdown Input | CMOS/TTL-compatible control: high ≥2.0 V enables regulation; low ≤0.4 V disables with near-zero quiescent current. |
| 4 (BYP) | Reference Bypass | Connects to internal bandgap reference; 470 pF to GND reduces output noise but requires ≥2.2 µF COUT for stability. |
| 5 (OUT) | Regulated Output | Delivers 3.1 V ±1% to load; requires ≥2.2 µF output capacitor (tantalum or low-ESR electrolytic) when BYP is used. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-Low Noise Operation | 260 nV/√Hz output noise with 470 pF BYP capacitor - enables clean power for RF ICs and high-resolution data converters. |
| Reverse-Battery Protection | Withstands –20 V on IN pin - prevents damage during battery insertion error in consumer handhelds. |
| Tight Load Regulation | 0.02% variation from 0.1 mA to 150 mA load - maintains voltage integrity across dynamic processor sleep/wake cycles. |
| Zero Off-Mode Current | ≤1 µA shutdown current - eliminates battery drain in storage or deep-sleep modes of IoT edge nodes. |
| Thermal Shutdown | Activates at +125°C junction temperature - protects device and PCB during sustained overload or poor heatsinking. |
Applications
| Wireless Sensor Node Power | Portable Medical Device Bias |
|---|---|
Use Scenario: Powering BLE SoC, MEMS accelerometer, and 12-bit SAR ADC from coin cell or LiPo in wearable health monitor. IC Role / Device Role / Timing Role: Primary 3.1 V LDO delivering regulated rail to mixed-signal subsystem with minimal noise coupling into analog front-end. Use Value: 260 nV/√Hz noise and ±1% accuracy ensure <0.5 LSB error in ADC conversion; 165 mV dropout extends usable battery range by >12% vs. standard LDOs. | Use Scenario: Supplying ECG amplifier, op-amp signal chain, and low-power MCU in handheld diagnostic tool. IC Role / Device Role / Timing Role: Low-noise post-regulator cleaning switching converter output for analog signal conditioning path. Use Value: 75 dB PSRR at 100 Hz rejects SMPS ripple; reverse-battery protection prevents field-repair damage during battery replacement. |
| Industrial Handheld Terminal | Smart Meter Real-Time Clock |
Use Scenario: Providing stable 3.1 V rail to barcode scanner ASIC, display driver, and secure element in ruggedized PDA. IC Role / Device Role / Timing Role: Main system LDO with logic-controlled enable synchronizing power-up to host processor command. Use Value: CMOS-compatible EN pin allows direct GPIO control; 150 mA capacity supports burst-mode scanning without brownout. | Use Scenario: Maintaining RTC, SRAM backup, and tamper-detection circuit during main power failure in utility meter. IC Role / Device Role / Timing Role: Always-on low-quiescent LDO sustaining critical functions from supercapacitor or backup battery. Use Value: 1 µA shutdown current preserves backup energy for >5 years; no-load stability prevents regulation loss during extended mains outage. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3102E/TO | 300 mA rated, 6 µA quiescent current, no BYP pin, 170 mV dropout at 250 mA | Lacks ultra-low-noise capability; better for cost-sensitive, non-analog applications | Select when noise <300 nV/√Hz is not required and higher output current is needed. |
| NCP1117ST31T3G | 1 A rated, 6 mA quiescent, no enable or BYP, 1.2 V dropout at 800 mA | Higher dropout and noise; intended for higher-current industrial rails, not portable low-noise use | Choose only for legacy 1 A designs where board space and noise are secondary concerns. |
Compared with MCP1700-3102E/TO and NCP1117ST31T3G, the MIC5205-3.1YM5-TR uniquely combines sub-200 mV dropout, 260 nV/√Hz noise, and logic-enable in SOT-23-5-making it irreplaceable for space-constrained, battery-powered analog-intensive systems.
Availability
MIC5205-3.1YM5-TR is available at Aetrix Electronics and suitable for wireless sensor nodes, portable medical diagnostics, industrial handheld terminals, and smart meter RTC backup requiring stable component supply across automotive-grade temperature ranges.
Supply support for MIC5205-3.1YM5-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 U.S.-based semiconductor company specializing in microcontrollers, analog devices, and power management ICs, with ISO/TS-16949 certified manufacturing.
The MIC5205 product line delivers ultra-low-noise, low-dropout linear regulators optimized for battery-powered portable electronics where precision, efficiency, and small size are critical.
FAQ
What is the maximum input voltage rating for MIC5205-3.1YM5-TR?
The absolute maximum input voltage for MIC5205-3.1YM5-TR is +20 V, but the recommended operating range is +2.5 V to +16 V. Exceeding +16 V risks exceeding thermal limits-especially at 150 mA load-due to its 220°C/W θJA. At room temperature and 150 mA output, VIN must stay ≤6.23 V to avoid thermal shutdown per Microchip's Equation 4-6.
Does MIC5205-3.1YM5-TR require an external bypass capacitor for basic operation?
No, MIC5205-3.1YM5-TR operates stably without the BYP capacitor. The 470 pF capacitor on pin 4 is optional and only required to achieve ultra-low-noise performance (260 nV/√Hz). When omitted, minimum output capacitance drops to 1.0 µF (vs. 2.2 µF with BYP), simplifying BOM for non-noise-critical applications.
Can MIC5205-3.1YM5-TR be used with ceramic output capacitors?
Yes, MIC5205-3.1YM5-TR is stable with ceramic output capacitors-but only if ESR is ≥1 Ω and resonant frequency is above 1 MHz. Ultra-low-ESR ceramics may cause oscillation or underdamped transients; Microchip recommends tantalum or aluminum electrolytic capacitors for guaranteed stability, especially when using the BYP pin.
What is the shutdown current of MIC5205-3.1YM5-TR?
The shutdown current of MIC5205-3.1YM5-TR is ≤1 µA (typical 0.01 µA) when EN is pulled low ≤0.18 V. This near-zero off-mode current preserves battery energy in long-term storage or deep-sleep states-critical for IoT endpoints and medical wearables where multi-year battery life is required.
Is MIC5205-3.1YM5-TR pin-compatible with other MIC5205 variants?
Yes, all MIC5205-xxYM5-TR fixed-output variants-including MIC5205-3.1YM5-TR-share identical 5-pin SOT-23 (M5) pinout (IN, GND, EN, BYP, OUT). This allows drop-in replacement across output voltages (2.5 V to 5.0 V) without PCB redesign, provided thermal and layout constraints remain within specification.
MIC5205-3.1YM5-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):
- 3.1V
- 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
MIC5205-3.1YM5-TR FAQ
1.How can I place an order for MIC5205-3.1YM5-TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5205-3.1YM5-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 MIC5205-3.1YM5-TR reliable?
The price and inventory of MIC5205-3.1YM5-TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5205-3.1YM5-TR is usually 5 days.
3.What payment methods are accepted for MIC5205-3.1YM5-TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5205-3.1YM5-TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5205-3.1YM5-TR?
MIC5205-3.1YM5-TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5205-3.1YM5-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 MIC5205-3.1YM5-TR?
For technical support, including MIC5205-3.1YM5-TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5205-3.1YM5-TR requirements.
6.How does Aetrix verify that MIC5205-3.1YM5-TR is sourced from the original manufacturer or authorized distributors?
All MIC5205-3.1YM5-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 MIC5205-3.1YM5-TR meets industry standards.
7.What is the process for return or replacement of MIC5205-3.1YM5-TR?
All MIC5205-3.1YM5-TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5205-3.1YM5-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 MIC5205-3.1YM5-TR part is unused and in its original packaging.
Return procedure for MIC5205-3.1YM5-TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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