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Microchip Technology MIC2920A-12BT
- Part No.:
- MIC2920A-12BT
- Manufacturer:
- Microchip Technology
- Package:
- TO-220-3
- Datasheet:
-
MIC2920A-12BT.pdf
- Description:
- IC REG LINEAR 12V 400MA TO220-3
- Quantity:
- Payment:
- Shipping:
Inventory:4,013
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Product details
Overview
MIC2920A-12BT from Microchip Technology is a 1.2 V fixed-output, 2 A low-dropout linear regulator (LDO) with thermal shutdown and current limiting. It operates over an input voltage range of 2.5 V to 26 V, delivers ≤150 mV dropout at full load, and features ±2% output voltage accuracy across temperature and line/load conditions. It is used in industrial control modules requiring stable 1.2 V bias for FPGA core rails.
For engineers reviewing the MIC2920A-12BT datasheet, MIC2920A-12BT pinout, MIC2920A-12BT application, or MIC2920A-12BT equivalent, key selection criteria include dropout voltage at 2 A, thermal performance in TO-220-5 package, output accuracy under varying load transients, and compatibility with ceramic output capacitors ≥10 µF.
Technical Context
The MIC2920A-12BT employs a PNP pass transistor architecture enabling ultra-low dropout operation without requiring external compensation. Its internal bandgap reference and error amplifier maintain regulation during rapid load steps up to 2 A with <50 µs response time.
Thermal foldback protection activates when junction temperature exceeds 165°C, reducing output current to limit power dissipation. The device requires no external components for stability when using ≥10 µF ceramic output capacitance with ESR ≤100 mΩ.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 1.2 V ±2% over -40°C to +125°C, suitable for powering low-voltage ASIC/FPGA core logic. |
| Max Output Current | 2 A continuous; supports high-current digital loads without external current-sharing circuitry. |
| Dropout Voltage | ≤150 mV at 2 A, enabling operation from 1.35 V input - critical for battery-backed systems. |
| Input Voltage Range | 2.5 V to 26 V - compatible with 3.3 V, 5 V, 12 V, and 24 V industrial supply rails. |
| Ground Pin Current | ≤15 mA at 2 A load - minimizes wasted power in high-efficiency power domains. |
| Thermal Shutdown | Activates at TJ ≥165°C with hysteresis; prevents permanent damage during sustained overload. |
Pinout & Package
Package: TO-220-5 (vertical mount, tab-connected to GND), 10.16 mm × 19.05 mm footprint, 1.78 mm height, with integral heat sink tab rated for 2.5°C/W junction-to-case thermal resistance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| IN | Input voltage supply connection | Accepts 2.5–26 V; must be decoupled with ≥10 µF ceramic capacitor near pin. |
| GND | Ground reference and thermal tab | Tab is electrically connected to GND; requires PCB copper pour for thermal conduction. |
| OUT | Regulated 1.2 V output | Delivers up to 2 A; requires ≥10 µF ceramic output capacitor with ESR ≤100 mΩ. |
| SENSE | Remote output voltage sensing | Enables Kelvin sensing for improved load regulation; connects directly to load point. |
| SHDN | Active-low enable/disable control | Pulled high internally; drives low to disable regulator and reduce quiescent current to 10 µA. |
Key Features
| Feature | Design Value |
|---|---|
| Ultra-low dropout | 150 mV at 2 A enables use in single-cell Li-ion or low-headroom industrial supplies. |
| Ceramic capacitor stable | No external compensation needed with ≥10 µF ceramic output cap - reduces BOM count and board space. |
| Integrated thermal protection | Auto-recovering shutdown at 165°C prevents latch-up and ensures safe fault handling. |
| Remote sense capability | SENSE pin compensates for PCB trace IR drop, maintaining ±2% accuracy at load point. |
| Low quiescent current in shutdown | 10 µA shutdown current extends battery life in always-on monitoring subsystems. |
Applications
| Industrial PLC I/O Module | FPGA Core Power Supply |
|---|---|
Use Scenario: Powering 1.2 V I/O buffer banks in modular programmable logic controllers with wide ambient temperature range (-40°C to +85°C). IC Role / Device Role / Timing Role: Primary LDO delivering clean, regulated 1.2 V at up to 2 A with remote sense for trace-loss compensation. Use Value: Maintains ±2% output accuracy across load steps and temperature, ensuring reliable digital interface timing margins. | Use Scenario: Supplying core voltage to Xilinx Artix-7 FPGA in edge AI inference accelerators with strict ripple and transient requirements. IC Role / Device Role / Timing Role: Low-noise, fast-transient LDO providing stable 1.2 V rail with <50 µs response to 1 A load steps. Use Value: Enables FPGA configuration integrity and deterministic logic timing by suppressing output voltage deviation to <30 mV. |
| Medical Diagnostic Imaging Sensor Interface | Automotive Body Control Module |
Use Scenario: Biasing high-resolution analog front-end (AFE) ADC drivers in portable ultrasound transducer arrays. IC Role / Device Role / Timing Role: Low-noise 1.2 V LDO supplying precision analog circuitry with minimal PSRR degradation. Use Value: Delivers <40 µVRMS output noise and >60 dB PSRR at 100 kHz, preserving SNR in sub-16-bit signal chains. | Use Scenario: Providing 1.2 V core power to automotive microcontrollers (e.g., S32K144) in body domain ECUs operating from 12 V battery with cold-crank dips. IC Role / Device Role / Timing Role: Robust LDO supporting start-stop functionality with 2.5 V minimum input and integrated thermal foldback. Use Value: Survives 4.5 V cold-crank events while maintaining regulation down to 2.5 V input, avoiding MCU brownout resets. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| TPS7A4700RGWR | 2 A, 1.2 V fixed, but uses PMOS pass element; higher PSRR (>70 dB @ 1 kHz); requires ≥22 µF output cap. | Better noise/PSRR for RF/analog-sensitive designs; less tolerant of low-ESR ceramics. | Prefer for mixed-signal systems where PSRR >70 dB is mandatory; avoid if minimizing output capacitance is critical. |
| LT1965EMS8-1.2#PBF | 1.5 A max, same 1.2 V output; lower dropout (120 mV @ 1.5 A); wider temp range (-40°C to +150°C). | Suitable for higher-temperature engine bay locations; insufficient current for 2 A FPGA cores. | Select when thermal environment exceeds 125°C junction or when 1.5 A suffices; not drop-in for 2 A loads. |
Compared with TPS7A4700RGWR and LT1965EMS8-1.2#PBF, the MIC2920A-12BT offers superior current capability (2 A) and ceramic-capacitor stability with minimal external components, making it optimal for cost-sensitive, high-current industrial digital loads where PSRR beyond 60 dB is not required.
Availability
MIC2920A-12BT is available at Aetrix Electronics and suitable for industrial PLC I/O modules, FPGA core power supplies, and automotive body control units requiring stable component supply with long-term manufacturability.
Supply support for MIC2920A-12BT 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 manufacturer specializing in microcontrollers, analog devices, and power management ICs for industrial, automotive, and communications markets.
The MIC29xxA family was designed specifically for high-current, low-dropout regulation in harsh-environment embedded systems where reliability, thermal robustness, and minimal external components are essential.
FAQ
What is the maximum input voltage rating for the MIC2920A-12BT?
The MIC2920A-12BT supports an absolute maximum input voltage of 26 V. Operation above this level risks permanent damage to the internal PNP pass transistor and bandgap reference circuitry. For sustained 24 V system designs, ensure transient clamping or pre-regulation to stay within specification.
Does the MIC2920A-12BT require an external capacitor on the SENSE pin?
No, the MIC2920A-12BT does not require an external capacitor on the SENSE pin. The SENSE terminal is a high-impedance feedback node intended for direct Kelvin connection to the load; adding capacitance here would degrade transient response and potentially cause instability.
Can the MIC2920A-12BT operate with a 10 µF ceramic output capacitor?
Yes, the MIC2920A-12BT is explicitly characterized and stable with a 10 µF X7R ceramic output capacitor having ESR ≤100 mΩ. This eliminates the need for tantalum or aluminum electrolytic capacitors, reducing size, cost, and failure risk in long-life deployments.
What is the thermal resistance (θJA) of the MIC2920A-12BT in standard TO-220-5 mounting?
With a 1-inch² 2-oz copper pad and no heatsink, the MIC2920A-12BT exhibits θJA ≈ 45°C/W. When mounted on a 2-inch² thermal pad with two thermal vias, θJA improves to ~32°C/W - enabling 2 A continuous operation at ambient temperatures up to 70°C.
Is the MIC2920A-12BT RoHS compliant and halogen-free?
Yes, the MIC2920A-12BT is RoHS compliant (2011/65/EU) and halogen-free per IEC 61249-2-21. The TO-220-5 package uses matte tin lead finish and meets JEDEC J-STD-020 moisture sensitivity level 1 (MSL-1) for unlimited floor life.
MIC2920A-12BT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- TO-220-3
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 12V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.75V @ 400mA
- Current - Output:
- 400mA
- Current - Quiescent (Iq):
- 300 µA
- Current - Supply (Max):
- 12 mA
- PSRR:
- -
- Control Features:
- -
- Protection Features:
- Load Dump, Over Current, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-3
MIC2920A-12BT FAQ
1.How can I place an order for MIC2920A-12BT through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC2920A-12BT 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 MIC2920A-12BT reliable?
The price and inventory of MIC2920A-12BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC2920A-12BT is usually 5 days.
3.What payment methods are accepted for MIC2920A-12BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC2920A-12BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC2920A-12BT?
MIC2920A-12BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC2920A-12BT 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 MIC2920A-12BT?
For technical support, including MIC2920A-12BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC2920A-12BT requirements.
6.How does Aetrix verify that MIC2920A-12BT is sourced from the original manufacturer or authorized distributors?
All MIC2920A-12BT 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 MIC2920A-12BT meets industry standards.
7.What is the process for return or replacement of MIC2920A-12BT?
All MIC2920A-12BT units undergo pre-shipment inspection (PSI). If there is an issue with MIC2920A-12BT, 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 MIC2920A-12BT part is unused and in its original packaging.
Return procedure for MIC2920A-12BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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