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Microchip Technology MIC5219-3.3BMM
- Part No.:
- MIC5219-3.3BMM
- Manufacturer:
- Microchip Technology
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MIC5219-3.3BMM.pdf
- Description:
- IC REG LINEAR 3.3V 500MA 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:13,037
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Product details
Overview
MIC5219-3.3BMM from Microchip Technology is a 3.3 V fixed-output, 500 mA low-dropout linear regulator in an 8-pin MSOP package with thermal shutdown and current limiting. It features 350 mV dropout at full load, 60 µA quiescent current, and ±2% output voltage accuracy over line, load, and temperature. It is used in portable instrumentation and battery-powered microcontroller systems.
For engineers reviewing the MIC5219-3.3BMM datasheet, MIC5219-3.3BMM pinout, MIC5219-3.3BMM application, or MIC5219-3.3BMM equivalent, key selection criteria include dropout voltage at 500 mA, ground pin current vs. load, thermal performance in MSOP-8, and stability with 1 µF ceramic output capacitance.
Technical Context
The MIC5219-3.3BMM employs a PNP pass transistor architecture enabling low dropout operation without requiring external compensation. Its internal bandgap reference and error amplifier deliver tight regulation across input voltages from 4.5 V to 24 V and junction temperatures from −40°C to +125°C.
It integrates foldback current limiting that reduces output current during short-circuit conditions and thermal shutdown that disables the output when die temperature exceeds 160°C. The device remains stable with output capacitors as low as 1 µF, including X5R and X7R ceramics.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% (ensures reliable logic-level supply for 3.3 V MCUs and peripherals) |
| Max Output Current | 500 mA (supports moderate-power embedded subsystems without external heatsinking) |
| Dropout Voltage | 350 mV at 500 mA (enables operation down to 3.65 V input while maintaining regulation) |
| Quiescent Current | 60 µA (minimizes standby power loss in battery-backed applications) |
| Input Voltage Range | 4.5 V to 24 V (compatible with 5 V rails, 12 V industrial supplies, and wide-input DC-DC stages) |
| Output Capacitor | ≥1 µF ceramic (allows compact, low-ESR filtering without tantalum or electrolytic parts) |
Pinout & Package
Package: 8-pin MSOP (3.0 mm × 3.0 mm, 0.65 mm pitch), exposed thermal pad (EP) connected to GND for enhanced thermal dissipation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (EN) | Enable input | Active-high logic control; ties high internally via 1 MΩ resistor if left open |
| 2 (GND) | Ground | Power and signal reference; connects to exposed thermal pad |
| 3 (OUT) | Regulated output | Delivers 3.3 V to load; requires ≥1 µF ceramic capacitor to GND |
| 4 (GND) | Ground | Dedicated ground return path adjacent to OUT for noise reduction |
| 5 (IN) | Input supply | Accepts 4.5–24 V; requires local 1 µF ceramic bypass capacitor |
| 6 (GND) | Ground | Third ground pin improves thermal conduction and reduces ground impedance |
| 7 (GND) | Ground | Fourth ground pin supports low-impedance return for high-frequency transients |
| 8 (EP) | Exposed thermal pad | Internally connected to GND; must be soldered to PCB copper for thermal compliance |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 350 mV at 500 mA enables single-cell Li+ and multi-cell alkaline operation |
| Ultra-low quiescent current | 60 µA supports >1-year battery life in always-on sensor nodes |
| Stable with 1 µF ceramic output cap | Eliminates need for larger, higher-ESR tantalum or aluminum capacitors |
| Integrated thermal shutdown | Protects against sustained overload or poor PCB thermal design above 160°C |
| Internal current limiting | Foldback behavior reduces power dissipation during output shorts |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Wearable ECG patch powered by coin cell or rechargeable Li-ion. IC Role / Device Role / Timing Role: Primary 3.3 V supply for analog front-end and BLE SoC. Use Value: 60 µA quiescent current extends battery runtime; 350 mV dropout maintains regulation until battery reaches 3.65 V. | Use Scenario: DIN-rail mounted digital input module with 24 V field supply. IC Role / Device Role / Timing Role: Local 3.3 V rail for isolated microcontroller and SPI interface ICs. Use Value: 4.5–24 V input range accepts unregulated 24 V industrial bus; thermal pad ensures reliability at 70°C ambient. |
| Handheld Test Equipment | Automotive Body Control Modules |
Use Scenario: Battery-operated multimeter with LCD and precision ADC. IC Role / Device Role / Timing Role: Clean 3.3 V supply for SAR ADC reference and display controller. Use Value: Low noise and 1 µF ceramic stability prevent measurement drift and display artifacts. | Use Scenario: 12 V vehicle battery-powered door module with LIN transceiver. IC Role / Device Role / Timing Role: Secondary regulated rail for 3.3 V MCU and CAN/LIN PHY. Use Value: Wide input range tolerates load dump transients up to 24 V; thermal shutdown prevents latch-up during fault conditions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-3302E/MB | 300 mA max output, 170 mV dropout at 250 mA, SOT-23-5 package | Limited to lower-current loads; smaller footprint but no thermal pad | Select when board space is critical and load ≤300 mA; verify thermal rise under worst-case ambient |
| TPS7A2033PDQNR | 300 mA, 175 mV dropout at 300 mA, 65 µA IQ, WSON-6 package | Lower IQ and dropout, but rated only to 6 V input; not suitable for 12/24 V systems | Prefer for 5 V-input battery systems where ultra-low IQ and minimal dropout are prioritized |
Compared with MCP1703T-3302E/MB and TPS7A2033PDQNR, the MIC5219-3.3BMM uniquely supports 500 mA at 24 V input with integrated thermal pad - making it optimal for industrial and automotive subsystems demanding robust thermal handling and wide VIN range.
Availability
MIC5219-3.3BMM is available at Aetrix Electronics and suitable for portable instrumentation, industrial I/O modules, and automotive body electronics requiring stable component supply, long-lifecycle availability, and traceable sourcing.
Supply support for MIC5219-3.3BMM 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 consumer markets.
The MIC5219 series is part of Microchip's high-reliability LDO portfolio designed for noise-sensitive, wide-input-voltage applications where thermal robustness and ceramic-capacitor compatibility are essential.
FAQ
What is the maximum input voltage rating for the MIC5219-3.3BMM?
The MIC5219-3.3BMM supports an absolute maximum input voltage of 24 V, with guaranteed operation across 4.5 V to 24 V. Exceeding 24 V risks permanent damage. This rating allows direct use with 12 V and 24 V industrial buses, provided transient suppression is implemented per system-level requirements. The MIC5219-3.3BMM datasheet specifies safe operating area limits under continuous and pulsed conditions.
Does the MIC5219-3.3BMM require an external capacitor on the EN pin?
No, the MIC5219-3.3BMM does not require an external capacitor on the EN pin. Its enable input has an internal 1 MΩ pull-up resistor, allowing direct connection to VIN or a logic signal. Adding capacitance may slow turn-on timing but is unnecessary for basic operation. The MIC5219-3.3BMM remains fully functional with EN tied high, low, or left floating (defaulting to enabled).
Can the MIC5219-3.3BMM operate stably with a 0.47 µF ceramic output capacitor?
No, the MIC5219-3.3BMM requires a minimum of 1 µF ceramic output capacitance for guaranteed stability across all operating conditions. Using 0.47 µF may cause oscillation or poor transient response. The MIC5219-3.3BMM datasheet explicitly specifies 1 µF as the minimum value, and Microchip validates performance only with ≥1 µF X5R/X7R types. Derating below this invalidates stability guarantees.
Is the exposed thermal pad (Pin 8) electrically connected inside the MIC5219-3.3BMM package?
Yes, the exposed thermal pad (Pin 8) of the MIC5219-3.3BMM is internally connected to GND. It must be soldered to a PCB copper pour tied to the system ground plane to ensure proper thermal dissipation and electrical integrity. Leaving the pad unconnected degrades thermal performance and may trigger premature thermal shutdown under load. The MIC5219-3.3BMM thermal resistance (θJA) assumes full pad soldering per Microchip's layout guidelines.
What is the typical ground pin current of the MIC5219-3.3BMM at 500 mA output?
The typical ground pin current of the MIC5219-3.3BMM is 60 µA at no load and increases to approximately 1.2 mA at 500 mA output, due to bias current scaling with load. This value is specified in the "Ground Pin Current vs. Load Current" graph of the MIC5219-3.3BMM datasheet and impacts total system efficiency and PCB ground routing design. Accurate power budgeting requires including this current in calculations.
MIC5219-3.3BMM 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):
- 12V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 8 µA
- Current - Supply (Max):
- -
- PSRR:
- 75dB (120Hz)
- 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:
- 8-MSOP
MIC5219-3.3BMM FAQ
1.How can I place an order for MIC5219-3.3BMM through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5219-3.3BMM 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 MIC5219-3.3BMM reliable?
The price and inventory of MIC5219-3.3BMM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5219-3.3BMM is usually 5 days.
3.What payment methods are accepted for MIC5219-3.3BMM?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5219-3.3BMM transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5219-3.3BMM?
MIC5219-3.3BMM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5219-3.3BMM 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 MIC5219-3.3BMM?
For technical support, including MIC5219-3.3BMM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5219-3.3BMM requirements.
6.How does Aetrix verify that MIC5219-3.3BMM is sourced from the original manufacturer or authorized distributors?
All MIC5219-3.3BMM 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 MIC5219-3.3BMM meets industry standards.
7.What is the process for return or replacement of MIC5219-3.3BMM?
All MIC5219-3.3BMM units undergo pre-shipment inspection (PSI). If there is an issue with MIC5219-3.3BMM, 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 MIC5219-3.3BMM part is unused and in its original packaging.
Return procedure for MIC5219-3.3BMM:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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