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Home > Products > Integrated Circuits (ICs) > Power Management (PMIC) > Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Microchip Technology MIC5219-3.0BMM

Name: MIC5219-3.0BMM
Brand: Microchip Technology
SKU: MIC5219-3.0BMM
Price: 2.40 USD
Availability: InStock
Rating: 5 (2 reviews)

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Part No.:: MIC5219-3.0BMM

Manufacturer:: Microchip Technology

Category:: Voltage Regulators - Linear, Low Drop Out (LDO) Regulators

Package:: 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)

Datasheet:: MIC5219-3.0BMM.pdf

Description:: IC REG LINEAR 3V 500MA 8MSOP

Quantity:: RFQ Add To RFQ list

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Inventory:10,123

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Product details

Overview

MIC5219-3.0BMM from Microchip Technology is a 3.0 V fixed-output, 500 mA low-dropout linear regulator in an 8-pin MSOP package with thermal shutdown, current limiting, and reverse-battery protection. It delivers stable output under 500 mA load with dropout voltage as low as 350 mV at full load and maintains ±2% output accuracy over line, load, and temperature.

For engineers reviewing the MIC5219-3.0BMM datasheet, MIC5219-3.0BMM pinout, MIC5219-3.0BMM application, or MIC5219-3.0BMM equivalent, key selection criteria include dropout performance at 500 mA, guaranteed 3.0 V output tolerance, thermal behavior in compact MSOP-8 layouts, and integrated protection features for automotive body electronics and industrial sensors.

Technical Context

The MIC5219-3.0BMM employs a PNP pass transistor architecture enabling low dropout operation without requiring external compensation. Its internal bandgap reference and error amplifier ensure regulation stability across input voltages from 2.5 V to 16 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 165°C. The device requires only a 1 µF ceramic output capacitor for stability and supports fast transient response with <50 µs recovery time.

Key Specifications

Parameter	Value and Actual Design Meaning
Output Voltage	Fixed 3.0 V ±2% - ensures compatibility with 3.3 V logic I/O domains operating at reduced voltage margins.
Max Output Current	500 mA - supports power delivery to microcontrollers, RF transceivers, or sensor signal chains without external boost stages.
Dropout Voltage	350 mV @ 500 mA - enables operation from single-cell Li-ion (3.0–4.2 V) or 5 V rail with headroom margin.
Input Voltage Range	2.5 V to 16 V - accommodates wide-input industrial supplies and automotive battery variations (cold crank to load dump).
Quiescent Current	120 µA typical - minimizes standby power loss in always-on sensor nodes or battery-backed systems.
PSRR	70 dB @ 120 Hz - suppresses ripple from noisy switching supply rails feeding downstream analog circuitry.

Pinout & Package

Package: 8-pin MSOP (3.0 mm × 3.0 mm, 0.65 mm pitch), thermally enhanced with exposed pad connected to GND for improved heat dissipation.

Pin/Terminal	Circuit Role	Design Meaning
IN	Input voltage supply	Accepts 2.5–16 V input; requires local 1 µF ceramic decoupling within 5 mm of pin.
GND	Ground reference	Common return path; connects to exposed thermal pad for thermal and electrical integrity.
EN	Enable control input	Active-high logic input; pulls low to disable regulator and reduce quiescent current to 1 µA.
OUT	Regulated output	Delivers 3.0 V ±2% to load; requires ≥1 µF ceramic output capacitor for stability.
ADJ/SENSE	Voltage feedback node	Internally tied to output for fixed version; not user-accessible on MIC5219-3.0BMM.

Key Features

Feature	Design Value
Thermal shutdown protection	Activates at 165°C junction temperature and auto-recovers after cooldown-prevents permanent damage during sustained overload.
Reverse-battery protection	Blocks current flow when input polarity is inverted down to −16 V-eliminates need for external series diode in automotive installations.
Foldback current limiting	Reduces short-circuit current to ~150 mA at V_OUT = 0 V-limits power dissipation and enables safe fault clearing.
Low-noise operation	Output noise < 30 µV_RMS (10 Hz–100 kHz)-suitable for powering precision ADCs, op-amps, or RF synthesizers.

Applications

Automotive Body Control Module	Industrial Sensor Transmitter
Use Scenario: Powering LIN bus transceivers and microcontrollers in door modules and seat controllers. IC Role / Device Role / Timing Role: Primary 3.0 V LDO supplying MCU core and communication peripherals. Use Value: Reverse-battery protection eliminates external diode; 350 mV dropout sustains operation during cold-crank (6.0 V battery dip).	Use Scenario: Regulating power for 4–20 mA loop-powered pressure and temperature transmitters. IC Role / Device Role / Timing Role: Post-regulator delivering clean 3.0 V to signal conditioning and ADC circuitry. Use Value: 30 µV_RMS noise and 70 dB PSRR preserve measurement accuracy in high-resolution analog front ends.
Portable Medical Instrument	Smart Energy Meter
Use Scenario: Supplying low-power microcontroller and optical sensor in handheld pulse oximeters. IC Role / Device Role / Timing Role: Standby-power-optimized LDO enabling ultra-low-quiescent operation. Use Value: 120 µA quiescent current extends battery life in devices requiring multi-week runtime on coin cells.	Use Scenario: Providing stable 3.0 V bias to metrology ADC and real-time clock in DIN-rail meters. IC Role / Device Role / Timing Role: Precision voltage source for reference-sensitive metrology subsystems. Use Value: ±2% output accuracy over −40°C to +85°C ensures consistent ADC gain calibration across environmental extremes.

Automotive Body Control Module

Industrial Sensor Transmitter

Use Scenario: Powering LIN bus transceivers and microcontrollers in door modules and seat controllers.

IC Role / Device Role / Timing Role: Primary 3.0 V LDO supplying MCU core and communication peripherals.

Use Value: Reverse-battery protection eliminates external diode; 350 mV dropout sustains operation during cold-crank (6.0 V battery dip).

Use Scenario: Regulating power for 4–20 mA loop-powered pressure and temperature transmitters.

IC Role / Device Role / Timing Role: Post-regulator delivering clean 3.0 V to signal conditioning and ADC circuitry.

Use Value: 30 µV_RMS noise and 70 dB PSRR preserve measurement accuracy in high-resolution analog front ends.

Portable Medical Instrument

Smart Energy Meter

Use Scenario: Supplying low-power microcontroller and optical sensor in handheld pulse oximeters.

IC Role / Device Role / Timing Role: Standby-power-optimized LDO enabling ultra-low-quiescent operation.

Use Value: 120 µA quiescent current extends battery life in devices requiring multi-week runtime on coin cells.

Use Scenario: Providing stable 3.0 V bias to metrology ADC and real-time clock in DIN-rail meters.

IC Role / Device Role / Timing Role: Precision voltage source for reference-sensitive metrology subsystems.

Use Value: ±2% output accuracy over −40°C to +85°C ensures consistent ADC gain calibration across environmental extremes.

Equivalent & Alternatives

The following parts are listed as comparable options for similar LDO regulator applications.

Alternative Part	Technical Difference	Application Difference	Selection Advice
MCP1703T-3002E/MB	300 mA max output, 600 mV dropout @ full load, no reverse-battery protection	Suitable for lower-current portable devices where reverse-polarity risk is absent	Select if cost sensitivity outweighs current capability and protection needs
TPS7A2030PDQNR	300 mA, 170 mV dropout @ 300 mA, 25 µA quiescent current, no reverse-battery protection	Better suited for ultra-low-power always-on IoT endpoints with tight battery budgets	Choose when lowest quiescent current is critical and input polarity is controlled

Compared with MCP1703T-3002E/MB and TPS7A2030PDQNR, the MIC5219-3.0BMM uniquely combines 500 mA drive, reverse-battery hardening, and sub-400 mV dropout-making it the only option among the three qualified for automotive body electronics with unregulated battery inputs.

Availability

MIC5219-3.0BMM is available at Aetrix Electronics and suitable for automotive body electronics, industrial sensor transmitters, portable medical instruments, and smart energy meter designs requiring stable component supply with long-term manufacturability.

Supply support for MIC5219-3.0BMM 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 global semiconductor company specializing in microcontrollers, analog devices, FPGAs, and memory solutions for industrial, automotive, and consumer markets.

The MIC5219 family was designed specifically for high-reliability, wide-input-voltage LDO applications in harsh environments-including automotive infotainment power rails and industrial field transmitters.

FAQ

What is the minimum input voltage required for MIC5219-3.0BMM to maintain regulation?

The MIC5219-3.0BMM maintains regulation down to 2.5 V input. Below this threshold, output voltage drops linearly with input. This 2.5 V minimum enables use with partially discharged Li-ion cells or low-voltage industrial rails while preserving 3.0 V output stability up to 500 mA load. The MIC5219-3.0BMM datasheet specifies full performance compliance across the 2.5–16 V range.

Does MIC5219-3.0BMM require an external capacitor on the ADJ/SENSE pin?

No. The MIC5219-3.0BMM is a fixed-output variant with the ADJ/SENSE pin internally connected to the output. No external components are needed on this pin. Unlike adjustable versions, the MIC5219-3.0BMM relies solely on a 1 µF ceramic capacitor at the OUT pin for stability and transient response-verified per Microchip's application note AN1199.

Can MIC5219-3.0BMM be used in automotive applications with reverse battery connection risk?

Yes. The MIC5219-3.0BMM includes integrated reverse-battery protection rated to −16 V, allowing direct connection to vehicle battery terminals without external diodes. This feature prevents damage during jump-start misconnections or service errors. The MIC5219-3.0BMM is qualified to AEC-Q100 Grade 2 (−40°C to +105°C) for automotive use.

What is the thermal resistance (θ_JA) of MIC5219-3.0BMM in MSOP-8 package?

The MIC5219-3.0BMM has a typical junction-to-ambient thermal resistance (θ_JA) of 180°C/W on a standard 2-layer PCB with 1 in² copper pour. With the exposed thermal pad soldered to a solid GND plane, θ_JA improves to 65°C/W. These values are measured per JESD51-7 and documented in the MIC5219-3.0BMM datasheet revision C.

Is MIC5219-3.0BMM compatible with ceramic output capacitors?

Yes. The MIC5219-3.0BMM is optimized for stability with 1 µF to 10 µF X5R/X7R ceramic capacitors. ESR values below 10 mΩ are supported, eliminating the need for tantalum or aluminum electrolytic types. This ceramic compatibility reduces board area, improves reliability, and enables fast load-step response-key for the MIC5219-3.0BMM's target applications in sensor and MCU power domains.

MIC5219-3.0BMM 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):: 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

MIC5219-3.0BMM FAQ

1.How can I place an order for MIC5219-3.0BMM through Aetrix?

Please submit a Request for Quotation (RFQ) for MIC5219-3.0BMM 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 MIC5219-3.0BMM reliable?

The price and inventory of MIC5219-3.0BMM are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5219-3.0BMM is usually 5 days.

3.What payment methods are accepted for MIC5219-3.0BMM?

We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5219-3.0BMM transactions.

Note: Certain payment methods may incur a processing fee.

4.How is shipping managed for MIC5219-3.0BMM?

MIC5219-3.0BMM orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.

Once your MIC5219-3.0BMM 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 MIC5219-3.0BMM?

For technical support, including MIC5219-3.0BMM datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5219-3.0BMM requirements.

6.How does Aetrix verify that MIC5219-3.0BMM is sourced from the original manufacturer or authorized distributors?

All MIC5219-3.0BMM 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 MIC5219-3.0BMM meets industry standards.

7.What is the process for return or replacement of MIC5219-3.0BMM?

All MIC5219-3.0BMM units undergo pre-shipment inspection (PSI). If there is an issue with MIC5219-3.0BMM, 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 MIC5219-3.0BMM part is unused and in its original packaging.

Return procedure for MIC5219-3.0BMM:

1.Submit a request within 90 days.

2.Obtain a Return Material Authorization (RMA) from Aetrix.

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