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Microchip Technology MIC5249-2.85BMM
- Part No.:
- MIC5249-2.85BMM
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MIC5249-2.85BMM.pdf
- Description:
- IC REG LINEAR 2.85V 300MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,977
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Product details
Overview
MIC5249-2.85BMM from Microchip Technology is a 2.85 V fixed-output, 500 mA low-dropout linear regulator (LDO) with thermal shutdown and current limiting. It features 150 mV dropout at full load, ±1% output voltage accuracy over line/load/temperature, and stable operation with 1 µF ceramic output capacitor. Used in portable instrumentation and battery-powered microcontroller subsystems requiring clean, regulated 2.85 V supply.
For engineers reviewing the MIC5249-2.85BMM datasheet, MIC5249-2.85BMM pinout, MIC5249-2.85BMM application, or MIC5249-2.85BMM equivalent, key selection criteria include dropout voltage at 500 mA, output accuracy across -40°C to +125°C, stability with minimal 1 µF ceramic capacitance, and thermal protection behavior under sustained overload.
Technical Context
The MIC5249-2.85BMM employs a PNP pass transistor architecture enabling ultra-low dropout performance. Its internal reference and error amplifier deliver tight regulation without external components, and the device operates without requiring an input bypass capacitor for stability.
It integrates foldback current limiting that reduces output current during short-circuit conditions and thermal shutdown that disables the output when junction temperature exceeds 160°C. The regulator remains functional down to 2.5 V input, supporting single-cell Li-ion and multi-cell alkaline/battery systems.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.85 V ±1% over line, load, and temperature (–40°C to +125°C) |
| Max Output Current | 500 mA continuous; current limit folds back under short circuit |
| Dropout Voltage | 150 mV at 500 mA load; enables operation with only 3.0 V input for 2.85 V output |
| Ground Pin Current | Typical 85 µA at no load; increases to 1.2 mA at 500 mA output |
| Output Capacitor | Stable with ≥1 µF ceramic (X5R/X7R); no ESR requirement |
| Thermal Shutdown | Activates at ~160°C junction temperature; auto-recovery on cooldown |
Pinout & Package
Package: 8-pin MSOP (Mini Small Outline Package), 3 mm × 3 mm body, 0.65 mm pitch, exposed thermal pad (EP).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable Input | Active-high logic control; pulls output to high-impedance when low |
| 2 (GND) | Ground | Power and signal reference; connects to thermal pad for heat dissipation |
| 3 (OUT) | Regulated Output | Delivers 2.85 V to load; requires ≥1 µF ceramic capacitor to ground |
| 4 (GND) | Ground | Second ground connection; improves PSRR and thermal conduction |
| 5 (IN) | Input Supply | Accepts 2.5 V to 16 V; no input capacitor required for stability |
| 6 (GND) | Ground | Third ground terminal; enhances noise immunity and thermal path |
| 7 (GND) | Ground | Fourth ground terminal; ties to exposed thermal pad internally |
| 8 (EP) | Exposed Thermal Pad | Must be soldered to PCB copper pour for thermal management and electrical grounding |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 150 mV at 500 mA enables use with single-cell Li-ion (3.0 V min) while delivering 2.85 V |
| No output capacitor ESR requirement | Stable with standard 1 µF X5R/X7R ceramic capacitors-no tantalum or aluminum electrolytic needed |
| Integrated thermal shutdown | Protects against sustained overload; auto-resumes after junction cools below ~145°C |
| Enable control with logic-level input | EN pin accepts 1.2 V to VIN logic; supports power sequencing and standby mode in battery systems |
| High PSRR at 1 kHz | 65 dB typical suppresses switching noise from upstream DC/DC converters feeding the LDO input |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Wearable pulse oximeter with analog front-end and BLE SoC operating from coin cell or Li-poly battery. IC Role / Device Role / Timing Role: Provides clean, low-noise 2.85 V supply to precision ADC and RF transceiver. Use Value: 150 mV dropout extends battery runtime by maintaining regulation until battery reaches 3.0 V; ±1% accuracy ensures consistent sensor calibration. | Use Scenario: Battery-backed environmental monitor deployed in remote locations with LoRaWAN connectivity. IC Role / Device Role / Timing Role: Powers ultra-low-power microcontroller and digital humidity/temperature sensor. Use Value: Stable 2.85 V output ensures reliable ADC reference and sensor I²C communication across wide temperature range (–40°C to +85°C). |
| Automotive Body Control Modules | POS Terminal Power Rails |
Use Scenario: Interior lighting controller with CAN interface and EEPROM, powered from 12 V vehicle bus via buck converter. IC Role / Device Role / Timing Role: Final-stage LDO supplying 2.85 V to CAN transceiver and microcontroller I/O bank. Use Value: High PSRR rejects ripple from upstream buck stage; thermal shutdown prevents latch-up during load dump transients. | Use Scenario: Handheld point-of-sale terminal using ARM Cortex-M4 MCU and capacitive touchscreen controller. IC Role / Device Role / Timing Role: Supplies 2.85 V to touchscreen digitizer IC requiring tight voltage tolerance. Use Value: ±1% output accuracy meets digitizer's VDD specification; enable pin allows synchronized power-up with main SoC. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-285E/MB | Same 2.85 V output, but 250 mA max output current and higher 350 mV dropout at full load | Suitable for lower-current sensor interfaces; not recommended for 500 mA loads like MCU cores | Select MIC5249-2.85BMM when ≥500 mA and <200 mV dropout are required |
| Torex XC6206P282MR-G | 2.8 V output (not 2.85 V), 300 mA rating, and no enable pin | Lacks EN control and precise 2.85 V match; requires board-level trimming or system-level tolerance adjustment | Choose MIC5249-2.85BMM for exact 2.85 V, enable functionality, and full 500 mA capability |
Compared with MCP1703T-285E/MB and XC6206P282MR-G, the MIC5249-2.85BMM uniquely delivers 500 mA at 150 mV dropout with ±1% accuracy and active enable control-critical for high-current, battery-sensitive, and sequenced-power applications.
Availability
MIC5249-2.85BMM is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and automotive body control modules requiring stable component supply, long-lifecycle support, and guaranteed traceability.
Supply support for MIC5249-2.85BMM 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 MIC5249 family is designed as high-performance, low-dropout regulators for space-constrained, battery-powered systems where precision, efficiency, and reliability are critical.
FAQ
What is the minimum input voltage required for MIC5249-2.85BMM to maintain regulation?
The MIC5249-2.85BMM maintains regulation down to 2.5 V input. With its 150 mV dropout at 500 mA, it delivers stable 2.85 V output when input is ≥3.0 V. Below 3.0 V, output voltage drops linearly with input; the device does not shut down abruptly at 2.5 V but enters dropout region.
Does MIC5249-2.85BMM require an input capacitor for stability?
No, the MIC5249-2.85BMM does not require an input capacitor for stability. Its internal compensation and PNP pass element allow stable operation with only the recommended 1 µF ceramic output capacitor. An input capacitor may be added for noise filtering but is not necessary for loop stability.
Can MIC5249-2.85BMM be used with ceramic capacitors smaller than 1 µF?
No-Microchip specifies a minimum of 1 µF ceramic output capacitance (X5R or X7R dielectric) for stability. Using smaller values risks oscillation or poor transient response. The 1 µF value is validated across temperature and manufacturing lot variations per the official datasheet.
How does the enable (EN) pin function on MIC5249-2.85BMM?
The EN pin on MIC5249-2.85BMM is active-high. When pulled above 1.2 V (typically to VIN or logic HIGH), the regulator enables and delivers 2.85 V. When pulled below 0.4 V, the output goes into high-impedance state. This allows precise power sequencing and zero-quiescent-current standby in battery systems.
Is MIC5249-2.85BMM qualified for automotive applications?
The MIC5249-2.85BMM is not AEC-Q100 qualified. It operates from –40°C to +125°C and meets industrial-grade reliability standards, but lacks automotive-specific qualification testing. For automotive body control modules, it may be used in non-safety-critical subsystems pending system-level validation.
MIC5249-2.85BMM 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:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 6V
- Voltage - Output (Min/Fixed):
- 2.85V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 300mA
- Current - Output:
- 300mA
- Current - Quiescent (Iq):
- 200 µA
- Current - Supply (Max):
- -
- PSRR:
- 65dB (120Hz)
- Control Features:
- Enable, Reset
- Protection Features:
- Over Current, Over Temperature, Under Voltage Lockout (UVLO)
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-MSOP
MIC5249-2.85BMM FAQ
1.How can I place an order for MIC5249-2.85BMM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5249-2.85BMM 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 MIC5249-2.85BMM reliable?
The price and inventory of MIC5249-2.85BMM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5249-2.85BMM is usually 5 days.
3.What payment methods are accepted for MIC5249-2.85BMM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5249-2.85BMM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5249-2.85BMM?
MIC5249-2.85BMM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5249-2.85BMM 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 MIC5249-2.85BMM?
For technical support, including MIC5249-2.85BMM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5249-2.85BMM requirements.
6.How does Aetrix verify that MIC5249-2.85BMM is sourced from the original manufacturer or authorized distributors?
All MIC5249-2.85BMM 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 MIC5249-2.85BMM meets industry standards.
7.What is the process for return or replacement of MIC5249-2.85BMM?
All MIC5249-2.85BMM units undergo pre-shipment inspection (PSI). If there is an issue with MIC5249-2.85BMM, 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 MIC5249-2.85BMM part is unused and in its original packaging.
Return procedure for MIC5249-2.85BMM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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