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Microchip Technology MIC5219-2.9BM5 TR
- Part No.:
- MIC5219-2.9BM5 TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5219-2.9BM5 TR.pdf
- Description:
- 500 MILLIAMP-PEAK OUTPUT LDO REG
- Quantity:
- Payment:
- Shipping:
Inventory:3,000
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Product details
Overview
MIC5219-2.9BM5 TR from Microchip Technology is a 2.9 V fixed-output, 150 mA low-dropout linear regulator in SOT-23-5 package with 350 mV dropout at full load, ±2% output voltage accuracy, and integrated thermal shutdown. It powers microcontroller I/O rails in portable instrumentation.
For engineers reviewing the MIC5219-2.9BM5 TR datasheet, MIC5219-2.9BM5 TR pinout, MIC5219-2.9BM5 TR application, or MIC5219-2.9BM5 TR equivalent, key selection criteria include dropout voltage under load, quiescent current in active mode, reverse-current protection, thermal performance in confined PCB layouts, and compatibility with ceramic output capacitors.
Technical Context
The MIC5219-2.9BM5 TR uses a PNP pass transistor architecture enabling stable regulation with input voltages as low as 3.25 V while maintaining 2.9 V output. It incorporates internal current limiting and thermal foldback to prevent damage during sustained overload.
Designed for battery-powered systems, it delivers 150 mA continuous output with only 120 µA typical ground current and supports 1 µF minimum ceramic output capacitance without requiring ESR tuning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.9 V ±2% - ensures stable I/O supply for 3.3 V logic interfaces operating at reduced core voltage. |
| Max Output Current | 150 mA - sufficient to power MCU peripherals including ADC reference, UART transceivers, and sensor interface circuitry. |
| Dropout Voltage | 350 mV at 150 mA - enables operation from single-cell Li-ion (3.0–3.6 V) or two-cell alkaline (3.2 V min) sources. |
| Quiescent Current | 120 µA typical - minimizes standby power loss in always-on sensor nodes and wake-on-event designs. |
| Output Capacitor | 1 µF ceramic minimum - eliminates need for tantalum or aluminum electrolytic, reducing board area and improving reliability. |
| Thermal Shutdown | Activated at 160 °C - protects device and PCB during solder reflow or sustained overcurrent conditions. |
Pinout & Package
SOT-23-5 package with exposed thermal pad (pin 5 grounded), 1.6 mm × 2.9 mm footprint, 1.1 mm height, and JEDEC MS-012 compliant outline.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Common return path for regulator control circuitry and output capacitor; connects to thermal pad. |
| 2 (OUT) | Regulated output | Delivers stable 2.9 V to load; requires local 1 µF ceramic capacitor to GND. |
| 3 (IN) | Input supply | Accepts 3.25–16 V DC; must be filtered with ≥1 µF ceramic capacitor near pin. |
| 4 (EN) | Enable control | Active-high logic input; pulls low to disable regulator and reduce quiescent current to 1 µA. |
| 5 (GND/EP) | Thermal pad / ground | Primary heat dissipation path; must be soldered to PCB copper pour for thermal performance. |
Key Features
| Feature | Design Value |
|---|---|
| Low dropout voltage | 350 mV at full 150 mA load enables use with diminishing battery voltage without brownout. |
| Reverse-current protection | Prevents backfeed from output to input when IN is unpowered - critical for multi-rail systems with shared outputs. |
| Stable with ceramic capacitors | Eliminates ESR requirements, reduces BOM count, and improves long-term reliability versus electrolytic solutions. |
| Enable pin with 1 µA shutdown | Supports ultra-low-power sleep modes in portable devices by cutting regulator bias current by >99%. |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Wearable pulse oximeter with optical front-end and BLE radio. IC Role / Device Role / Timing Role: Supplies clean 2.9 V to analog signal chain and digital baseband IC. Use Value: Low noise and 120 µA quiescent current extend battery life beyond 7 days on CR2032. | Use Scenario: Battery-backed environmental monitor deployed in remote substations. IC Role / Device Role / Timing Role: Powers microcontroller and RS-485 transceiver from primary Li-SOCl₂ cell. Use Value: 350 mV dropout allows operation down to 3.25 V input, maximizing usable cell capacity. |
| Smart Metering Modules | Automotive Body Control Units |
Use Scenario: UL-certified electricity meter with isolated PLC communication. IC Role / Device Role / Timing Role: Provides regulated 2.9 V for metrology ADC and real-time clock backup domain. Use Value: ±2% output accuracy maintains measurement linearity across temperature and load variation. | Use Scenario: Door module with LIN transceiver and LED driver ICs. IC Role / Device Role / Timing Role: Supplies 2.9 V rail for LIN physical layer and microcontroller I/O buffers. Use Value: Reverse-current protection prevents backfeed into main 12 V bus during ignition-off state. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-2902E/TT | 250 mA output, 1.6 µA quiescent current, no enable pin, SOT-23-3 package. | Lacks EN control and thermal pad; lower IQ suits always-on ultra-low-power sensors but limits dynamic load handling. | Select when minimal quiescent current dominates over enable functionality and thermal management. |
| NCP1117ST2.85T3G | 1 A output, 1.1 V dropout at 800 mA, TO-220/SOT-223, no enable, ±2% tolerance. | Higher current and dropout unsuitable for single-cell battery systems; better for fixed 5 V/12 V industrial supplies. | Select only for higher-current, non-battery applications where thermal mass compensates for larger dropout. |
Compared with MCP1700T-2902E/TT and NCP1117ST2.85T3G, the MIC5219-2.9BM5 TR uniquely balances 150 mA capability, 350 mV dropout, EN control, and thermal-pad-enhanced dissipation in SOT-23-5 - making it optimal for space-constrained, battery-fed embedded systems requiring active power management.
Availability
MIC5219-2.9BM5 TR is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and smart metering modules requiring stable component supply and long-term production continuity.
Supply support for MIC5219-2.9BM5 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 embedded control applications.
The MIC5219 series is designed for high-efficiency, low-noise local regulation in battery-powered and space-constrained systems where precision, thermal performance, and enable control are essential.
FAQ
What is the maximum input voltage rating for the MIC5219-2.9BM5 TR?
The MIC5219-2.9BM5 TR supports an absolute maximum input voltage of 16 V. Operation above this level risks permanent damage to the internal PNP pass element and control circuitry. For reliable long-term use in automotive or industrial environments, design margin should limit steady-state input to ≤14 V with transient clamping.
Does the MIC5219-2.9BM5 TR require an external bypass capacitor on the IN pin?
Yes, the MIC5219-2.9BM5 TR requires a minimum 1 µF ceramic capacitor placed as close as possible to the IN pin. This stabilizes input impedance, suppresses high-frequency noise from upstream sources, and prevents oscillation during load transients - especially critical when powered from switching regulators or long PCB traces.
Can the MIC5219-2.9BM5 TR operate with a 3.0 V input supply?
Yes, the MIC5219-2.9BM5 TR can regulate with a 3.0 V input, delivering 2.9 V output at reduced load. At 150 mA, minimum input is 3.25 V due to 350 mV dropout; at 50 mA, input may drop to ~3.05 V. Below that, output voltage sags proportionally - verify load current vs. input headroom in final design.
Is the thermal pad (pin 5) of the MIC5219-2.9BM5 TR electrically connected to ground?
Yes, the exposed thermal pad (pin 5) of the MIC5219-2.9BM5 TR is internally connected to GND and must be soldered to a PCB ground plane. This connection provides both electrical grounding and primary thermal conduction; omitting it degrades thermal resistance by >50% and risks thermal shutdown under moderate load.
What is the output voltage tolerance of the MIC5219-2.9BM5 TR over temperature and line/load conditions?
The MIC5219-2.9BM5 TR guarantees ±2% output voltage tolerance over the full operating temperature range (−40 °C to +125 °C), input voltage (3.25–16 V), and load current (0–150 mA). This includes initial tolerance, line regulation, load regulation, and thermal drift - verified per Microchip's production test flow.
MIC5219-2.9BM5 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):
- 2.9V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 500mA
- Current - Output:
- 500mA
- Current - Quiescent (Iq):
- 170 µA
- Current - Supply (Max):
- 25 mA
- PSRR:
- 75dB (120Hz)
- Control Features:
- Current Limit, Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C (TJ)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC5219-2.9BM5 TR FAQ
1.How can I place an order for MIC5219-2.9BM5 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5219-2.9BM5 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 MIC5219-2.9BM5 TR reliable?
The price and inventory of MIC5219-2.9BM5 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5219-2.9BM5 TR is usually 5 days.
3.What payment methods are accepted for MIC5219-2.9BM5 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5219-2.9BM5 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5219-2.9BM5 TR?
MIC5219-2.9BM5 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5219-2.9BM5 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 MIC5219-2.9BM5 TR?
For technical support, including MIC5219-2.9BM5 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5219-2.9BM5 TR requirements.
6.How does Aetrix verify that MIC5219-2.9BM5 TR is sourced from the original manufacturer or authorized distributors?
All MIC5219-2.9BM5 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 MIC5219-2.9BM5 TR meets industry standards.
7.What is the process for return or replacement of MIC5219-2.9BM5 TR?
All MIC5219-2.9BM5 TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5219-2.9BM5 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 MIC5219-2.9BM5 TR part is unused and in its original packaging.
Return procedure for MIC5219-2.9BM5 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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