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Microchip Technology MIC3775BMM
- Part No.:
- MIC3775BMM
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MIC3775BMM.pdf
- Description:
- IC REG LIN POS ADJ 750MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:101,135
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Product details
Overview
MIC3775BMM from Microchip Technology is a 500mA low-dropout linear regulator with fixed 3.3V output, 340mV dropout at full load, ±2% output voltage accuracy, and integrated thermal shutdown and current limiting. It operates from 2.5V to 16V input and is used in point-of-load power for microcontrollers and sensors in industrial control modules.
For engineers reviewing the MIC3775BMM datasheet, MIC3775BMM pinout, MIC3775BMM application, or MIC3775BMM equivalent, key selection criteria include dropout voltage at 500mA, load regulation performance across temperature, thermal resistance of the MSOP-8 package, and compatibility with ceramic output capacitors ≥2.2µF.
Technical Context
The MIC3775BMM employs a PNP pass transistor architecture enabling stable regulation with minimal headroom. Its internal bandgap reference and error amplifier deliver ±2% initial output accuracy and <±0.1%/V line regulation over 2.5V–16V input range.
Designed for low-noise operation, it achieves 45µVRMS output noise (10Hz–100kHz) and supports fast transient response with 10µs typical recovery time from 50% load step. No external compensation is required due to internal stability optimization for 2.2µF–10µF ceramic output capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3V ±2% - ensures reliable I/O voltage for 3.3V logic interfaces without external feedback components. |
| Max Output Current | 500mA - supports moderate-power peripherals such as UART transceivers or small-signal amplifiers. |
| Dropout Voltage | 340mV at 500mA - enables operation from 3.64V minimum input, suitable for single-cell Li-ion or 5V rail derating. |
| Ground Pin Current | 4.5mA typical - contributes <0.5% of total load current, minimizing quiescent power loss in battery-powered systems. |
| PSRR | 65dB at 120Hz - suppresses ripple from switching pre-regulators, improving ADC reference stability. |
| Thermal Shutdown | Activated at 160°C junction - protects device during sustained overload or poor PCB heatsinking. |
Pinout & Package
Package: MSOP-8 (3mm × 3mm, 0.65mm pitch), exposed thermal pad (EP) connected to GND for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply | Accepts 2.5V–16V unregulated input; requires local 1µF ceramic decoupling. |
| GND | Ground reference | Common return path for load current and internal circuitry; connects to EP for thermal conduction. |
| EN | Enable control | Active-high logic input; pulls high internally via 1.2MΩ resistor-connect to IN for always-on operation. |
| OUT | Regulated output | Delivers 3.3V ±2% to load; requires ≥2.2µF ceramic capacitor with ESR <100mΩ. |
| ADJ/SENSE | Voltage feedback node | Internally tied to output; not accessible-device is fixed-output, no external resistor divider. |
| EP | Thermal pad | Exposed copper pad on underside; must be soldered to PCB GND plane for θJA ≤ 120°C/W. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 340mV at 500mA enables use with marginal input rails where buck converters add complexity and noise. |
| Ultra-low output noise | 45µVRMS (10Hz–100kHz) preserves signal integrity in analog front-ends and precision sensor interfaces. |
| Integrated protection | Thermal shutdown + foldback current limiting prevent damage during short-circuit or overtemperature events. |
| Ceramic capacitor compatible | Stable with 2.2µF–10µF X5R/X7R ceramics-eliminates need for larger, less reliable tantalum or aluminum electrolytics. |
Applications
| Industrial PLC I/O Modules | Medical Sensor Signal Chains |
|---|---|
Use Scenario: Powering isolated analog input channels with 24-bit delta-sigma ADCs and instrumentation amplifiers. IC Role / Device Role / Timing Role: Local 3.3V LDO supplying clean bias to precision analog circuitry adjacent to noisy digital controllers. Use Value: 45µVRMS noise and 65dB PSRR minimize ADC quantization errors caused by switching supply coupling. | Use Scenario: Providing regulated 3.3V to MEMS pressure and temperature sensors in portable diagnostic devices. IC Role / Device Role / Timing Role: Primary power source for ultra-low-power sensor subsystems operating from coin-cell or Li-ion batteries. Use Value: 340mV dropout extends usable battery life by enabling regulation down to 3.64V input before cutoff. |
| Automotive Body Control Units | IoT Edge Node Microcontrollers |
Use Scenario: Supplying 3.3V to CAN transceivers and microcontroller I/O banks in under-hood modules. IC Role / Device Role / Timing Role: Post-regulator after 5V buck converter, delivering stable voltage despite load transients and wide ambient temperature swings. Use Value: ±2% output accuracy and <±0.1%/V line regulation ensure CAN physical layer compliance across 12V battery variations. | Use Scenario: Powering ARM Cortex-M0+ MCUs and BLE radio subsystems in battery-operated smart sensors. IC Role / Device Role / Timing Role: Main system regulator enabling low-power sleep modes with 4.5mA ground current. Use Value: Low quiescent current and fast 10µs transient response maintain MCU core voltage during RF transmit bursts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| Torex XC6206P332MR-G | 300mA max output, 200mV dropout at 100mA, SOT-23-3 package | Limited to lower-current loads; lacks enable pin and thermal pad | Select when board space is critical and load current stays below 300mA. |
| ON Semiconductor NCP1117ST33T3G | 1A output, 1.2V dropout at 800mA, TO-220/SOT-223 packages | Higher dropout and larger thermal footprint; no MSOP-8 option | Choose for higher current needs where PCB area and thermal design allow larger packages. |
Compared with the MIC3775BMM, the XC6206P332MR-G offers smaller size but sacrifices 40% output current and thermal performance, while the NCP1117ST33T3G delivers higher current at the cost of significantly larger dropout and footprint-making MIC3775BMM optimal for compact, thermally constrained 500mA designs requiring low noise and fast transient response.
Availability
MIC3775BMM is available at Aetrix Electronics and suitable for industrial automation, medical diagnostics, and automotive body electronics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MIC3775BMM 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 communications markets.
The MIC37xx family delivers high-performance LDO regulators optimized for noise-sensitive, space-constrained applications demanding precision output, low dropout, and robust thermal behavior.
FAQ
What is the maximum input voltage rating for the MIC3775BMM?
The MIC3775BMM supports an absolute maximum input voltage of 16V. Operation above this level risks permanent damage to the internal pass transistor and protection circuitry. For reliable long-term use, design input rails to stay within 2.5V–16V, with appropriate derating for transients per Microchip's recommended layout guidelines.
Does the MIC3775BMM require an external capacitor on the ADJ/SENSE pin?
No, the MIC3775BMM does not require an external capacitor on the ADJ/SENSE pin because it is a fixed-output regulator with internally connected feedback. The ADJ/SENSE terminal is not user-accessible; output voltage is factory-set to 3.3V ±2%, eliminating external resistor networks or compensation components.
Can the MIC3775BMM operate with a 2.2µF ceramic output capacitor?
Yes, the MIC3775BMM is fully stable with a 2.2µF X5R or X7R ceramic capacitor on the OUT pin. This value meets Microchip's minimum requirement and provides optimal transient response and phase margin. Larger values up to 10µF are also supported without compromising stability.
How is thermal performance affected if the EP pad is not soldered to GND?
If the exposed thermal pad (EP) of the MIC3775BMM is left unsoldered or unconnected, junction-to-ambient thermal resistance increases dramatically-from 120°C/W (with proper EP soldering) to >200°C/W. This severely limits safe continuous output current and risks premature thermal shutdown under 300mA+ loads.
Is the EN pin of the MIC3775BMM compatible with 1.8V logic levels?
No, the EN pin of the MIC3775BMM has a typical threshold of 1.4V (min 1.1V, max 1.7V), making it incompatible with guaranteed 1.8V logic high signals. For reliable enable control, drive EN from a 3.3V GPIO or use a level-shifter; tying EN directly to IN ensures always-on operation without logic interface.
MIC3775BMM Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- 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 @ 750mA
- Current - Output:
- 750mA
- 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-MSOP
MIC3775BMM FAQ
1.How can I place an order for MIC3775BMM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC3775BMM 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 MIC3775BMM reliable?
The price and inventory of MIC3775BMM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC3775BMM is usually 5 days.
3.What payment methods are accepted for MIC3775BMM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC3775BMM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC3775BMM?
MIC3775BMM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC3775BMM 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 MIC3775BMM?
For technical support, including MIC3775BMM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC3775BMM requirements.
6.How does Aetrix verify that MIC3775BMM is sourced from the original manufacturer or authorized distributors?
All MIC3775BMM 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 MIC3775BMM meets industry standards.
7.What is the process for return or replacement of MIC3775BMM?
All MIC3775BMM units undergo pre-shipment inspection (PSI). If there is an issue with MIC3775BMM, 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 MIC3775BMM part is unused and in its original packaging.
Return procedure for MIC3775BMM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MIC3775BMM Tags
-
MIC5504-1.8YM5-TR
Microchip Technology
-
MIC5504-3.3YM5-TR
Microchip Technology
-
MIC5365-3.0YC5-TR
Microchip Technology
-
MIC5365-1.8YC5-TR
Microchip Technology
-
MIC5365-2.5YC5-TR
Microchip Technology
-
MIC5365-3.3YC5-TR
Microchip Technology
-
MIC5365-3.3YD5-TR
Microchip Technology
-
MIC5317-3.3YM5-TR
Microchip Technology
-
TLV1117LV33DCYR
Texas Instruments
-
MIC5317-3.3YMT-TZ
Microchip Technology
-
MIC5528-3.3YMT-TR
Microchip Technology
-
TLV75801PDRVR
Texas Instruments
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