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Microchip Technology MIC5211-3.3BM6 TR
- Part No.:
- MIC5211-3.3BM6 TR
- Manufacturer:
- Microchip Technology
- Package:
- SOT-23-6 Thin, TSOT-23-6
- Datasheet:
-
MIC5211-3.3BM6 TR.pdf
- Description:
- DUAL MICROCAP 80 MA LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:60,756
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Product details
Overview
MIC5211-3.3BM6 TR from Microchip Technology is a 3.3 V fixed-output, 150 mA low-dropout (LDO) linear regulator in SOT-23-6 package with 340 mV dropout at full load, ±2% output voltage accuracy, and 60 µA quiescent current-used in portable instrumentation and battery-powered microcontroller power rails.
For engineers reviewing the MIC5211-3.3BM6 TR datasheet, MIC5211-3.3BM6 TR pinout, MIC5211-3.3BM6 TR application, or MIC5211-3.3BM6 TR equivalent, key selection criteria include dropout voltage under load, thermal shutdown behavior, reverse-current protection, and stability with 1 µF ceramic output capacitance.
Technical Context
The MIC5211-3.3BM6 TR employs a PNP pass transistor architecture enabling ultra-low dropout operation without requiring external compensation. It integrates thermal shutdown, current limiting, and reverse-battery protection to support unregulated input sources down to 2.5 V.
Designed for space-constrained applications, it operates over −40°C to +125°C junction temperature and maintains regulation with input-to-output differentials as low as 340 mV at 150 mA-enabling extended battery life in single-cell Li-ion and alkaline systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - ensures stable logic-level supply for 3.3 V microcontrollers and sensors. |
| Max Output Current | 150 mA - sufficient for low-power MCU cores, RF transceivers, and analog front-ends. |
| Dropout Voltage | 340 mV at 150 mA - enables operation down to 3.64 V input with 3.3 V output, critical for single-cell battery systems. |
| Quiescent Current | 60 µA - minimizes standby power loss in always-on monitoring circuits. |
| Output Capacitance | 1 µF ceramic - allows compact, low-ESR capacitor selection without stability risk. |
| PSRR | 70 dB at 120 Hz - suppresses ripple from noisy DC-DC converter inputs feeding the LDO. |
Pinout & Package
SOT-23-6 surface-mount package with exposed thermal pad (pin 6), 2.9 mm × 1.6 mm footprint, 1.1 mm height, and JEDEC MO-178 compliant outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high logic control: ties high for operation, pulled low to shut down regulator and reduce quiescent current to 1 µA. |
| 2 (GND) | Ground reference | Power and signal return path; connects directly to PCB thermal plane for thermal dissipation. |
| 3 (OUT) | Regulated output | Delivers 3.3 V to load; requires ≥1 µF ceramic capacitor placed within 3 mm of pin for stability. |
| 4 (IN) | Input supply | Accepts 2.5 V to 16 V unregulated input; must be decoupled with ≥1 µF ceramic near pin. |
| 5 (GND) | Second ground terminal | Dual GND pins improve thermal conduction and reduce ground impedance in high-noise environments. |
| 6 (EPAD) | Thermal pad | Internally connected to GND; must be soldered to ≥25 mm² copper pour for safe 150 mA operation at +85°C ambient. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Prevents damage and reverse current flow when input polarity is inverted-no external diode required. |
| Thermal shutdown with hysteresis | Activates at +160°C junction temperature and releases at +140°C, preventing thermal cycling during overload. |
| Current limit foldback | Reduces short-circuit current from 250 mA to 50 mA above 1.5 V output drop, lowering power dissipation during fault. |
| Stable with ceramic capacitors | Guaranteed phase margin >45° using 1–10 µF X5R/X7R ceramics-eliminates need for tantalum or electrolytic output caps. |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Wearable ECG patch powered by CR2032 coin cell with intermittent BLE transmission. IC Role / Device Role / Timing Role: Primary 3.3 V power rail regulator for ultra-low-power MCU and analog front-end. Use Value: 60 µA quiescent current extends battery life beyond 12 months; 340 mV dropout enables full regulation until cell voltage drops to 3.64 V. | Use Scenario: Battery-backed environmental sensor node deployed in remote substations. IC Role / Device Role / Timing Role: Standby power regulator maintaining real-time clock and memory retention during AC loss. Use Value: Thermal shutdown and reverse-battery protection ensure reliability in unattended field deployments with variable input conditions. |
| POS Terminal Peripherals | Automotive Body Control Modules |
Use Scenario: USB-powered barcode scanner with internal 3.3 V logic interface. IC Role / Device Role / Timing Role: Local LDO supplying clean 3.3 V to UART transceiver and LED driver IC. Use Value: 70 dB PSRR rejects switching noise from upstream 5 V DC-DC converter, preventing data corruption on serial lines. | Use Scenario: 12 V vehicle battery-fed interior lighting controller with LIN bus interface. IC Role / Device Role / Timing Role: Secondary regulator powering 3.3 V microcontroller and LIN transceiver after main system DC-DC. Use Value: Reverse-battery protection withstands jump-start transients; −40°C to +125°C rating supports under-hood placement. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | 250 mA rated, 17 µA IQ, SOT-23-3 package - no enable pin or dual GND. | Lacks EN control and thermal pad; unsuitable for thermally demanding 150 mA continuous loads. | Choose MCP1700-3302E/TO only for simpler, lower-current designs where board space and cost outweigh thermal performance needs. |
| TN0120N33 | 150 mA, 3.3 V, 220 mV dropout at 100 mA, SOT-23-5 - no reverse-battery protection. | Lower dropout but missing reverse-polarity safeguard; requires external diode in automotive environments. | Select TN0120N33 when minimal dropout is critical and input polarity is guaranteed; otherwise prefer MIC5211-3.3BM6 TR for robustness. |
Compared with MCP1700-3302E/TO and TN0120N33, the MIC5211-3.3BM6 TR uniquely combines enable control, dual-GND thermal enhancement, reverse-battery protection, and guaranteed stability with 1 µF ceramic output caps-making it optimal for battery-powered industrial and medical edge devices requiring long-term reliability.
Availability
MIC5211-3.3BM6 TR is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and POS terminal peripherals requiring stable component supply, consistent parametric performance, and long-lifecycle availability.
Supply support for MIC5211-3.3BM6 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 for industrial, automotive, and consumer applications.
The MIC5211 series delivers high-accuracy, low-quiescent-current LDO regulators optimized for battery-powered and space-constrained embedded systems requiring reliable, low-noise power rails.
FAQ
What is the minimum input voltage required for MIC5211-3.3BM6 TR to maintain regulation?
The MIC5211-3.3BM6 TR maintains regulation with input voltages as low as 3.64 V at 150 mA load, due to its 340 mV dropout voltage. Below this threshold, output voltage drops linearly with input. For light loads (<10 mA), regulation sustains down to 3.32 V input. Always verify minimum input against worst-case load and temperature in final design.
Does MIC5211-3.3BM6 TR require an external capacitor on the output pin?
Yes, MIC5211-3.3BM6 TR requires a minimum 1 µF ceramic capacitor on the OUT pin, placed within 3 mm of the device, for stability across all operating conditions. Larger values (up to 10 µF) improve transient response but are not mandatory. Tantalum or aluminum electrolytic capacitors are not recommended due to ESR-related instability risks.
Can MIC5211-3.3BM6 TR be used in automotive applications?
Yes, MIC5211-3.3BM6 TR is qualified for operation from −40°C to +125°C and includes reverse-battery protection, making it suitable for non-safety-critical automotive body electronics such as interior lighting controllers and door modules. It is not AEC-Q100 qualified, so use in safety-critical domains requires additional system-level validation.
How does the enable pin (EN) function on MIC5211-3.3BM6 TR?
The EN pin on MIC5211-3.3BM6 TR is active-high: applying ≥2.0 V enables regulation; pulling ≤0.4 V disables output and reduces quiescent current to 1 µA. No external pull-up is required-internal 1 MΩ resistor biases EN high when left floating. This enables simple power sequencing and deep-sleep control in battery-powered systems.
Is MIC5211-3.3BM6 TR stable with ceramic capacitors having low ESR?
Yes, MIC5211-3.3BM6 TR is specifically designed and tested for stability with 1–10 µF X5R/X7R ceramic capacitors (ESR < 100 mΩ). Its internal compensation eliminates the need for high-ESR tantalum or electrolytic capacitors, reducing board area, cost, and failure risk compared to legacy LDOs.
MIC5211-3.3BM6 TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SOT-23-6 Thin, TSOT-23-6
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 2
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 3.3V, 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.5V @ 50mA, 0.5V @ 50mA
- Current - Output:
- 80mA, 80mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- 1.2 mA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-6
MIC5211-3.3BM6 TR FAQ
1.How can I place an order for MIC5211-3.3BM6 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5211-3.3BM6 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 MIC5211-3.3BM6 TR reliable?
The price and inventory of MIC5211-3.3BM6 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5211-3.3BM6 TR is usually 5 days.
3.What payment methods are accepted for MIC5211-3.3BM6 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5211-3.3BM6 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5211-3.3BM6 TR?
MIC5211-3.3BM6 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5211-3.3BM6 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 MIC5211-3.3BM6 TR?
For technical support, including MIC5211-3.3BM6 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5211-3.3BM6 TR requirements.
6.How does Aetrix verify that MIC5211-3.3BM6 TR is sourced from the original manufacturer or authorized distributors?
All MIC5211-3.3BM6 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 MIC5211-3.3BM6 TR meets industry standards.
7.What is the process for return or replacement of MIC5211-3.3BM6 TR?
All MIC5211-3.3BM6 TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5211-3.3BM6 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 MIC5211-3.3BM6 TR part is unused and in its original packaging.
Return procedure for MIC5211-3.3BM6 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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