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Microchip Technology MIC37102BMTR
- Part No.:
- MIC37102BMTR
- Manufacturer:
- Microchip Technology
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
MIC37102BMTR.pdf
- Description:
- IC REG LIN 1A LOW VOLT MICROCAP
- Quantity:
- Payment:
- Shipping:
Inventory:7,500
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Product details
Overview
MIC37102BMTR from Microchip Technology is a 1A low-dropout linear regulator (LDO) with fixed 2.5V output, 340mV dropout at full load, and ±2% output voltage accuracy over temperature and line/load variations. It operates from 2.7V to 6V input and integrates thermal shutdown and current limiting for reliable power delivery in space-constrained embedded systems.
For engineers reviewing the MIC37102BMTR datasheet, MIC37102BMTR pinout, MIC37102BMTR application, or MIC37102BMTR equivalent, key selection criteria include dropout voltage at 1A, output accuracy under load transients, thermal performance in SOT-223, and compatibility with ceramic output capacitors ≥2.2µF.
Technical Context
The MIC37102BMTR uses a PNP pass transistor architecture enabling stable regulation with minimal headroom. Its internal reference and error amplifier maintain tight DC accuracy while supporting fast transient response to load steps up to 100mA/µs.
Designed for single-supply operation, it requires no external compensation and supports input bypassing with standard 1µF ceramic capacitors. The device is specified across –40°C to +125°C junction temperature range and meets AEC-Q100 Grade 3 stress testing requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.5V ±2% - ensures precise biasing for ADC references and low-voltage logic rails. |
| Max Output Current | 1A continuous - supports moderate-power microcontrollers and interface ICs without external heatsinking in SOT-223. |
| Dropout Voltage | 340mV at 1A - enables operation from 2.84V minimum input, critical for battery-powered 3.3V system derating. |
| Input Voltage Range | 2.7V to 6.0V - compatible with Li-ion, Li-Po, and regulated 3.3V/5V supply rails. |
| Ground Pin Current | 6mA typical at 1A - contributes <6mW quiescent loss, improving efficiency in always-on subsystems. |
| Thermal Shutdown | Activated at 160°C junction - protects against sustained overload or poor PCB thermal design. |
Pinout & Package
Package: SOT-223-3 (standard JEDEC MO-178AB), thermally enhanced plastic package with exposed tab electrically connected to GND.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (VIN) | Input supply connection | Accepts 2.7–6.0V; requires local 1µF ceramic bypass capacitor within 5mm. |
| 2 (GND) | Ground reference and thermal pad | Primary return path and main heat conduction route to PCB copper pour. |
| 3 (VOUT) | Regulated output terminal | Delivers 2.5V ±2%; stable with 2.2µF–10µF ceramic output capacitance. |
Key Features
| Feature | Design Value |
|---|---|
| Low Dropout Performance | 340mV at 1A enables use in brown-out conditions where input drops to 2.84V while maintaining regulation. |
| Ceramic Capacitor Compatible | Stable with 2.2µF X5R/X7R ceramics - eliminates need for larger, less reliable tantalum or aluminum electrolytics. |
| Integrated Protection | Current limit + thermal shutdown prevent damage during short-circuit or high-ambient thermal events. |
| High PSRR | 65dB at 1kHz - suppresses ripple from noisy switch-mode pre-regulators feeding the LDO input. |
Applications
| Industrial Sensor Node | Medical Wearable Monitor |
|---|---|
Use Scenario: Battery-powered temperature/humidity sensor node with ultra-low sleep current and periodic 1A peak MCU wake-up. IC Role / Device Role / Timing Role: Primary 2.5V rail regulator supplying ADC reference and MCU core voltage. Use Value: 340mV dropout extends usable battery life by enabling operation down to 2.84V on single-cell Li-ion. | Use Scenario: Compact ECG front-end module requiring clean, stable 2.5V for analog signal chain and low-noise op-amps. IC Role / Device Role / Timing Role: Precision analog supply regulator decoupled from digital switching noise. Use Value: 65dB PSRR at 1kHz attenuates SMPS ripple, preserving ADC ENOB in sub-16-bit medical acquisition. |
| Automotive Body Control Module | IoT Edge Gateway |
Use Scenario: 12V automotive subsystem with local 5V buck converter followed by MIC37102BMTR for 2.5V logic rail. IC Role / Device Role / Timing Role: Post-regulator ensuring AEC-Q100-compliant voltage stability across cold-crank and load-dump transients. Use Value: ±2% accuracy and –40°C to +125°C operation meet ASIL-B functional safety margin requirements. | Use Scenario: Cellular-connected edge gateway with dual-core ARM processor and RF transceiver sharing a 2.5V I/O rail. IC Role / Device Role / Timing Role: High-current I/O supply regulator supporting simultaneous CPU and modem activity bursts. Use Value: 1A capability with thermal shutdown prevents thermal runaway during sustained 4G/LTE transmission peaks. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6219B251MR-G | 2.5V fixed, 1A, 250mV dropout at 1A, SOT-23-5 package | Lower dropout but limited to 500mA in SOT-23-5; requires different PCB layout | Select for lower dropout in space-constrained designs where 500mA suffices. |
| ON Semiconductor NCP1117ST2.5T3G | 2.5V fixed, 1A, 1.2V dropout at 1A, SOT-223-3 package | Higher dropout limits use with Li-ion below 3.7V; wider input range (up to 20V) | Select when input may exceed 6V or higher absolute max input voltage is required. |
Compared with XC6219B251MR-G and NCP1117ST2.5T3G, the MIC37102BMTR uniquely balances 340mV dropout, SOT-223 thermal capability, and AEC-Q100 qualification-making it optimal for automotive and industrial 1A loads where input stays ≤6V.
Availability
MIC37102BMTR is available at Aetrix Electronics and suitable for industrial sensor nodes, medical wearables, automotive body control modules, and IoT edge gateways requiring stable component supply with full traceability and long-term lifecycle support.
Supply support for MIC37102BMTR 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, FPGAs, and power management ICs for industrial, automotive, and communications markets.
The MIC37xxx family delivers high-current, low-dropout regulators optimized for reliability-critical embedded systems where thermal robustness, precision output, and automotive qualification matter.
FAQ
What is the maximum input voltage rating for MIC37102BMTR?
The MIC37102BMTR has an absolute maximum input voltage of 6.5V. Operation above 6.0V is not recommended for long-term reliability. The device is rated for continuous operation from 2.7V to 6.0V input, making it ideal for single-cell Li-ion, Li-Po, and regulated 3.3V/5V supply rails. Exceeding 6.0V risks permanent damage even with brief transients.
Does MIC37102BMTR require an external capacitor on the output pin?
Yes, MIC37102BMTR requires a minimum 2.2µF ceramic output capacitor for stability. The datasheet specifies stable operation with 2.2µF to 10µF X5R or X7R dielectrics. Tantalum or aluminum electrolytic capacitors are not recommended due to ESR sensitivity. Placement within 5mm of VOUT and GND pins is critical for transient response and noise suppression.
Is MIC37102BMTR qualified for automotive applications?
Yes, MIC37102BMTR is qualified to AEC-Q100 Grade 3 (–40°C to +125°C ambient). It undergoes stress testing including HTOL, TC, and ESD per AEC standards. This makes MIC37102BMTR suitable for non-safety-critical automotive body electronics such as lighting controllers, door modules, and HVAC actuators where 2.5V precision regulation is required.
What thermal performance can be expected from MIC37102BMTR in SOT-223?
In a standard 4-layer PCB with 1in² 2oz copper pour connected to the exposed GND tab, MIC37102BMTR achieves θJA ≈ 65°C/W. At 1A load with 340mV dropout, power dissipation is 340mW, resulting in ~22°C rise above ambient. Thermal shutdown activates at 160°C junction temperature, providing robust protection under sustained overload or poor heatsinking.
Can MIC37102BMTR be used with a 1µF input capacitor?
Yes, MIC37102BMTR is specified to operate stably with a minimum 1µF ceramic input capacitor placed within 5mm of VIN and GND pins. This value meets EMI filtering and transient response requirements for most embedded applications. Larger values (e.g., 4.7µF) improve ripple rejection but are not required for basic functionality or stability.
MIC37102BMTR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Adjustable
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 1.24V
- Voltage - Output (Max):
- 6V
- Voltage Dropout (Max):
- 0.5V @ 1A
- Current - Output:
- 1A
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- -
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-SOIC
MIC37102BMTR FAQ
1.How can I place an order for MIC37102BMTR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC37102BMTR 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 MIC37102BMTR reliable?
The price and inventory of MIC37102BMTR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC37102BMTR is usually 5 days.
3.What payment methods are accepted for MIC37102BMTR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC37102BMTR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC37102BMTR?
MIC37102BMTR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC37102BMTR 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 MIC37102BMTR?
For technical support, including MIC37102BMTR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC37102BMTR requirements.
6.How does Aetrix verify that MIC37102BMTR is sourced from the original manufacturer or authorized distributors?
All MIC37102BMTR 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 MIC37102BMTR meets industry standards.
7.What is the process for return or replacement of MIC37102BMTR?
All MIC37102BMTR units undergo pre-shipment inspection (PSI). If there is an issue with MIC37102BMTR, 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 MIC37102BMTR part is unused and in its original packaging.
Return procedure for MIC37102BMTR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC37102BMTR Tags
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