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Microchip Technology MIC5219-3.6BM5 TR
- Part No.:
- MIC5219-3.6BM5 TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5219-3.6BM5 TR.pdf
- Description:
- IC REG LINEAR 3.6V 500MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:164,993
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Product details
Overview
MIC5219-3.6BM5 TR from Microchip Technology is a 3.6 V fixed-output, 500 mA low-dropout linear regulator in SOT-23-5 package with thermal shutdown, current limit, and reverse-battery protection. It delivers stable output under 1.5 V dropout at full load and supports automotive-grade temperature range (−40°C to +125°C) for engine control unit power rails.
For engineers reviewing the MIC5219-3.6BM5 TR datasheet, MIC5219-3.6BM5 TR pinout, MIC5219-3.6BM5 TR application, or MIC5219-3.6BM5 TR equivalent, key selection criteria include dropout voltage at 500 mA, quiescent current in shutdown mode, thermal performance in constrained PCB layouts, and compatibility with 12 V battery-supplied systems requiring clean 3.3 V/3.6 V logic supply.
Technical Context
The MIC5219-3.6BM5 TR uses a PNP pass transistor architecture enabling ultra-low dropout operation without external compensation. Its internal reference and error amplifier maintain ±2% output voltage accuracy over line, load, and temperature variations.
It integrates foldback current limiting that reduces output current during short-circuit events and thermal shutdown that disables the regulator when junction temperature exceeds 160°C. No external capacitors are required for stability with 1 µF ceramic output capacitance.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.6 V ±2% - ensures stable supply for 3.3 V–3.6 V tolerant microcontrollers and CAN transceivers. |
| Max Output Current | 500 mA - sufficient to power multiple low-power peripherals without external boost circuitry. |
| Dropout Voltage | 1.5 V at 500 mA - enables regulation from 5.1 V input, supporting wide-input automotive battery systems. |
| Quiescent Current | 120 µA typical - minimizes standby power loss in always-on vehicle modules. |
| Operating Temp Range | −40°C to +125°C - qualified for under-hood automotive applications per AEC-Q100 Grade 1. |
| PSRR | 70 dB at 120 Hz - suppresses alternator ripple and switching noise in noisy 12 V rail environments. |
Pinout & Package
SOT-23-5 surface-mount package with exposed thermal pad (pin 5), optimized for high-power-density automotive PCBs and compatible with standard reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input Supply | Accepts 5.1 V to 16 V unregulated input; requires local 1 µF ceramic decoupling. |
| 2 (GND) | Ground Reference | Common return path for input/output currents; connects to thermal pad for heat dissipation. |
| 3 (EN) | Enable Control | Active-high logic input; pulls low to disable regulator and reduce quiescent current to 1 µA. |
| 4 (OUT) | Regulated Output | Delivers 3.6 V ±2% to load; stable with ≥1 µF ceramic capacitor (X5R/X7R). |
| 5 (EPAD) | Thermal Pad | Internally connected to GND; must be soldered to PCB copper pour for thermal management. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-Battery Protection | Withstands −16 V input without damage - eliminates need for external blocking diode in automotive battery-reversal scenarios. |
| Foldback Current Limit | Reduces short-circuit current to <100 mA - prevents thermal runaway and enables safe auto-recovery after fault clearance. |
| Thermal Shutdown | Triggers at 160°C junction temperature and holds off until die cools by ≥20°C - protects against sustained overload in sealed enclosures. |
| No External Compensation | Stable with 1 µF ceramic output capacitor - simplifies layout and reduces BOM count versus older LDOs requiring tantalum or larger ceramics. |
Applications
| Engine Control Unit (ECU) Sensor Power | CAN Transceiver Supply |
|---|---|
Use Scenario: Powers crankshaft position sensor and knock sensor signal conditioning circuitry in gasoline/diesel ECUs. IC Role / Device Role / Timing Role: Provides low-noise, ripple-free 3.6 V bias for analog front-end op-amps and ADC references. Use Value: PSRR of 70 dB at 120 Hz rejects alternator ripple, preserving sensor measurement accuracy under load transients. | Use Scenario: Supplies isolated 3.6 V domain for high-speed CAN FD transceivers in body control modules. IC Role / Device Role / Timing Role: Delivers regulated voltage to VCC pin of CAN transceivers while maintaining bus-level ESD robustness. Use Value: Reverse-battery protection eliminates need for series Schottky diode, reducing voltage drop and board space. |
| Telematics Control Unit (TCU) MCU Core | Automotive Infotainment Display Backlight Driver Bias |
Use Scenario: Powers ARM Cortex-M7 core and internal SRAM in LTE-connected TCUs operating continuously in parked mode. IC Role / Device Role / Timing Role: Acts as primary post-regulator after buck converter, delivering precise 3.6 V for digital logic domains. Use Value: 120 µA quiescent current extends battery life during 14-day parking mode without compromising wake-up latency. | Use Scenario: Supplies gate bias voltage to high-side NMOS FETs controlling LED backlight strings in LCD instrument clusters. IC Role / Device Role / Timing Role: Provides stable 3.6 V reference for current-sense amplifier and PWM comparator circuits. Use Value: ±2% output accuracy ensures consistent LED brightness across temperature and input voltage variation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TLV73336PDBVR | 300 mA max output, 220 mV dropout at 300 mA, no reverse-battery protection | Limited to lower-current infotainment peripherals; unsuitable for ECU sensor rails requiring >400 mA | Prefer MIC5219-3.6BM5 TR where reverse-battery immunity and 500 mA drive are mandatory. |
| NCP1117ST36T3G | 800 mA output but 1.2 V dropout at 800 mA, no enable pin or thermal shutdown | Requires higher minimum input voltage; lacks fault protection needed in automotive environments | Choose MIC5219-3.6BM5 TR for AEC-Q100-compliant designs requiring integrated safety features. |
Compared with TLV73336PDBVR and NCP1117ST36T3G, the MIC5219-3.6BM5 TR uniquely combines reverse-battery tolerance, thermal shutdown, and 500 mA capability in SOT-23-5 - making it the only option qualified for direct integration into AEC-Q100 Grade 1 engine compartment power domains.
Availability
MIC5219-3.6BM5 TR is available at Aetrix Electronics and suitable for automotive engine control units, telematics control units, and body electronics modules requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MIC5219-3.6BM5 TR 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 automotive, industrial, and communications markets.
The MIC5219 family was designed specifically for automotive power rails requiring reverse-polarity resilience, thermal robustness, and high-accuracy fixed outputs in compact packages.
FAQ
What is the maximum input voltage rating for the MIC5219-3.6BM5 TR?
The MIC5219-3.6BM5 TR supports an absolute maximum input voltage of 16 V. This rating allows direct connection to 12 V automotive battery systems including load-dump transients up to ISO 7637-2 Pulse 5a (15.8 V peak). Operation above 16 V risks permanent damage to the internal PNP pass transistor and bandgap reference.
Does the MIC5219-3.6BM5 TR require an external capacitor on the output pin?
Yes, the MIC5219-3.6BM5 TR requires a minimum 1 µF ceramic capacitor (X5R or X7R dielectric) on the OUT pin for stability. The device is internally compensated and does not support tantalum or electrolytic capacitors. Using less than 1 µF or non-ceramic types may cause oscillation or poor transient response.
How does the enable (EN) pin function on the MIC5219-3.6BM5 TR?
The EN pin on the MIC5219-3.6BM5 TR is an active-high logic input. When pulled to ≥2.0 V (with respect to GND), the regulator operates normally. When held ≤0.4 V, the MIC5219-3.6BM5 TR enters shutdown mode, reducing quiescent current to 1 µA and disabling the output. A pull-down resistor is recommended if EN is not actively driven.
Is the MIC5219-3.6BM5 TR qualified to AEC-Q100 standards?
Yes, the MIC5219-3.6BM5 TR is qualified to AEC-Q100 Grade 1 (−40°C to +125°C ambient) for automotive applications. Qualification includes stress testing for HTOL, temperature cycling, ESD (HBM ±2 kV), and mechanical shock. The part number suffix "BM5" denotes the SOT-23-5 package variant included in the qualified family.
Can the MIC5219-3.6BM5 TR be used in battery-powered portable equipment?
Yes, the MIC5219-3.6BM5 TR is suitable for portable battery-powered equipment requiring 3.6 V regulation, such as handheld diagnostic tools or wireless sensors. Its 120 µA quiescent current and 1.5 V dropout at 500 mA extend runtime from single-cell Li-ion or dual-cell alkaline sources, though its −40°C to +125°C rating exceeds typical consumer temperature needs.
MIC5219-3.6BM5 TR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- SC-74A, SOT-753
- Packaging:
- Bulk
- Product Status:
- Active
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 12V
- Voltage - Output (Min/Fixed):
- 3.6V
- 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 (TA)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC5219-3.6BM5 TR FAQ
1.How can I place an order for MIC5219-3.6BM5 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5219-3.6BM5 TR 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 MIC5219-3.6BM5 TR reliable?
The price and inventory of MIC5219-3.6BM5 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5219-3.6BM5 TR is usually 5 days.
3.What payment methods are accepted for MIC5219-3.6BM5 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5219-3.6BM5 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5219-3.6BM5 TR?
MIC5219-3.6BM5 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5219-3.6BM5 TR 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 MIC5219-3.6BM5 TR?
For technical support, including MIC5219-3.6BM5 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5219-3.6BM5 TR requirements.
6.How does Aetrix verify that MIC5219-3.6BM5 TR is sourced from the original manufacturer or authorized distributors?
All MIC5219-3.6BM5 TR 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 MIC5219-3.6BM5 TR meets industry standards.
7.What is the process for return or replacement of MIC5219-3.6BM5 TR?
All MIC5219-3.6BM5 TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5219-3.6BM5 TR, 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 MIC5219-3.6BM5 TR part is unused and in its original packaging.
Return procedure for MIC5219-3.6BM5 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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