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Microchip Technology MIC5205-3.1BM5 TR
- Part No.:
- MIC5205-3.1BM5 TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5205-3.1BM5 TR.pdf
- Description:
- IC REG LINEAR 3.1V 150MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:21,000
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Product details
Overview
MIC5205-3.1BM5 TR from Microchip Technology is a 3.1 V fixed-output, 150 mA low-dropout linear regulator in SOT-23-5 package with 350 mV dropout at full load, ±2% output voltage accuracy, and 85 µA quiescent current-used in portable instrumentation power rails.
For engineers reviewing the MIC5205-3.1BM5 TR datasheet, MIC5205-3.1BM5 TR pinout, MIC5205-3.1BM5 TR application, or MIC5205-3.1BM5 TR equivalent, key selection criteria include dropout voltage under load, thermal shutdown behavior, reverse-battery protection, and stability with 1 µF ceramic output capacitors.
Technical Context
The MIC5205-3.1BM5 TR employs a PNP pass transistor architecture enabling stable regulation with minimal headroom. It integrates thermal shutdown, current limiting, and reverse-battery protection to prevent damage during fault conditions.
Designed for single-supply operation from 2.5 V to 16 V input, it delivers regulated 3.1 V output across –40°C to +125°C junction temperature range without requiring external compensation components.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.1 V ±2% - ensures consistent logic-level supply for 3.3 V–tolerant microcontrollers and sensors. |
| Max Output Current | 150 mA - supports moderate-power analog front-ends and low-power RF modules. |
| Dropout Voltage | 350 mV at 150 mA - enables operation from single Li-ion cells down to 3.45 V while maintaining regulation. |
| Quiescent Current | 85 µA - minimizes standby power loss in battery-powered wake-on-event systems. |
| PSRR | 70 dB at 120 Hz - suppresses ripple from switching DC/DC converters feeding the LDO input. |
| Stability | Stable with ≥1 µF ceramic output capacitor - eliminates need for tantalum or electrolytic capacitors. |
Pinout & Package
Package: SOT-23-5 (Moisture Sensitivity Level 1, Pb-free, RoHS-compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Common return path for load current and internal bias circuits. |
| 2 (OUT) | Regulated output | Delivers stable 3.1 V to connected load; requires local 1 µF ceramic capacitor. |
| 3 (IN) | Input supply | Accepts 2.5 V–16 V unregulated input; must be decoupled with ≥1 µF capacitor. |
| 4 (EN) | Enable control | Active-high logic input; pulls output to high-impedance when driven low. |
| 5 (GND) | Second ground terminal | Reduces thermal resistance and improves PSRR by separating power and signal ground paths. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Prevents destructive current flow if input polarity is inverted-no external diode required. |
| Thermal shutdown with hysteresis | Activates at +160°C junction temperature and releases at +140°C to avoid oscillation during overload. |
| Current limit foldback | Reduces short-circuit current from 250 mA to 75 mA above thermal threshold to limit power dissipation. |
| Low-noise output | 30 µVRMS output noise (10 Hz–100 kHz) - suitable for precision ADC references and RF bias rails. |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Wearable ECG sensor with ultra-low-power MCU and analog front-end. IC Role / Device Role / Timing Role: Primary 3.1 V supply for signal chain and microcontroller core. Use Value: 85 µA quiescent current extends battery life; 350 mV dropout allows use of partially discharged Li-ion cells. | Use Scenario: Battery-backed wireless temperature transmitter in factory automation. IC Role / Device Role / Timing Role: Regulated power source for LoRa transceiver and precision temperature sensor. Use Value: Reverse-battery protection prevents field-replacement damage; thermal shutdown ensures reliability during enclosure overheating. |
| Automotive Body Control Modules | Handheld Test Equipment |
Use Scenario: Low-power door module with LIN interface and LED drivers. IC Role / Device Role / Timing Role: Secondary 3.1 V rail derived from 12 V battery via buck converter. Use Value: 70 dB PSRR rejects switching noise from upstream DC/DC; stable with ceramic caps simplifies layout. | Use Scenario: Portable multimeter with LCD display and analog measurement circuitry. IC Role / Device Role / Timing Role: Clean 3.1 V supply for op-amp buffers and reference voltage generation. Use Value: 30 µVRMS output noise avoids measurement drift; ±2% accuracy meets Class II meter tolerances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3102E/TT | Same 3.1 V output, but 250 mA rating and 1.6 µA quiescent current; no enable pin. | Lacks EN control and thermal foldback; better for always-on ultra-low-IQ use cases. | Select when lowest possible standby current is critical and enable functionality is unnecessary. |
| NCP1117ST31T3G | 3.1 V fixed version with 1 A output, higher dropout (1.2 V), TO-220/SOT-223 package. | Higher thermal mass and larger footprint; suited for higher-current, non-portable designs. | Choose when >150 mA load current or higher ambient temperature operation is required. |
Compared with MCP1700T-3102E/TT and NCP1117ST31T3G, the MIC5205-3.1BM5 TR uniquely balances 150 mA capability, 85 µA IQ, active enable control, and thermal foldback in a 5-pin SOT-23-making it optimal for space-constrained, battery-sensitive systems requiring robust fault handling.
Availability
MIC5205-3.1BM5 TR is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and handheld test equipment requiring stable component supply and long-term production continuity.
Supply support for MIC5205-3.1BM5 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 manufacturer specializing in microcontrollers, analog devices, and power management ICs for industrial, automotive, and consumer applications.
The MIC5205 family was designed specifically for space- and power-constrained portable electronics requiring high-accuracy, low-noise, and fault-protected LDO regulation in miniature packages.
FAQ
What is the maximum input voltage rating for the MIC5205-3.1BM5 TR?
The MIC5205-3.1BM5 TR supports an absolute maximum input voltage of 16 V. Operation beyond this rating risks permanent damage. For reliable long-term use, Microchip recommends limiting input to ≤15 V under all conditions, including transient spikes, especially when operating near thermal limits.
Does the MIC5205-3.1BM5 TR require an external capacitor on the output pin?
Yes, the MIC5205-3.1BM5 TR requires a minimum 1 µF ceramic capacitor on the OUT pin for stability. Microchip specifies X5R or X7R dielectrics with ≤100 mΩ ESR. Omitting or undersizing this capacitor may cause oscillation or poor transient response in the MIC5205-3.1BM5 TR output.
How does the enable (EN) pin function on the MIC5205-3.1BM5 TR?
The EN pin on the MIC5205-3.1BM5 TR is an active-high digital control input. When pulled ≥2.0 V (with respect to GND), the MIC5205-3.1BM5 TR regulates normally. When held ≤0.4 V, the output enters high-impedance state and quiescent current drops to 1 µA-enabling precise system-level power sequencing.
Is the MIC5205-3.1BM5 TR compatible with ceramic output capacitors?
Yes, the MIC5205-3.1BM5 TR is explicitly characterized and guaranteed stable with ceramic output capacitors ≥1 µF. Unlike older LDOs, it does not require ESR-based damping, eliminating the need for tantalum or aluminum electrolytic capacitors in the MIC5205-3.1BM5 TR design.
What thermal protection features are integrated into the MIC5205-3.1BM5 TR?
The MIC5205-3.1BM5 TR includes thermal shutdown with 20°C hysteresis: it disables regulation at +160°C junction temperature and re-enables at +140°C. It also implements current-limit foldback-reducing short-circuit current from 250 mA to 75 mA above thermal threshold-to prevent destructive power dissipation in the MIC5205-3.1BM5 TR.
MIC5205-3.1BM5 TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- 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):
- 0.275V @ 150mA
- Current - Output:
- 150mA
- Current - Quiescent (Iq):
- 1 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
MIC5205-3.1BM5 TR FAQ
1.How can I place an order for MIC5205-3.1BM5 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5205-3.1BM5 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 MIC5205-3.1BM5 TR reliable?
The price and inventory of MIC5205-3.1BM5 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5205-3.1BM5 TR is usually 5 days.
3.What payment methods are accepted for MIC5205-3.1BM5 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5205-3.1BM5 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5205-3.1BM5 TR?
MIC5205-3.1BM5 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5205-3.1BM5 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 MIC5205-3.1BM5 TR?
For technical support, including MIC5205-3.1BM5 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5205-3.1BM5 TR requirements.
6.How does Aetrix verify that MIC5205-3.1BM5 TR is sourced from the original manufacturer or authorized distributors?
All MIC5205-3.1BM5 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 MIC5205-3.1BM5 TR meets industry standards.
7.What is the process for return or replacement of MIC5205-3.1BM5 TR?
All MIC5205-3.1BM5 TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5205-3.1BM5 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 MIC5205-3.1BM5 TR part is unused and in its original packaging.
Return procedure for MIC5205-3.1BM5 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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