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Microchip Technology MIC29201-4.8BT
- Part No.:
- MIC29201-4.8BT
- Manufacturer:
- Microchip Technology
- Package:
- TO-220-5
- Datasheet:
-
MIC29201-4.8BT.pdf
- Description:
- IC REG LIN 4.85V 400MA TO220-5
- Quantity:
- Payment:
- Shipping:
Inventory:4,594
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Product details
Overview
MIC29201-4.8BT from Microchip Technology is a 3A low-dropout linear regulator with fixed 4.8V output, 350mV dropout at full load, and integrated thermal shutdown and current limiting. It operates over -40°C to +125°C and is used in industrial control power rails requiring stable, noise-sensitive 4.8V supply.
For engineers reviewing the MIC29201-4.8BT datasheet, MIC29201-4.8BT pinout, MIC29201-4.8BT application, or MIC29201-4.8BT equivalent, key selection criteria include dropout voltage at 3A, thermal performance in TO-220-5 package, output accuracy over temperature, and compatibility with ceramic output capacitors.
Technical Context
The MIC29201-4.8BT employs PNP pass transistor architecture enabling ultra-low dropout and high PSRR (>70dB at 1kHz). It integrates foldback current limiting and thermal shutdown with automatic recovery, eliminating external protection circuitry.
Designed for fixed-output operation, it requires no external feedback resistors and supports output capacitance from 10µF to 100µF with ESR < 100mΩ - compatible with low-ESR ceramic capacitors without stability compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.8V ±1.5% over line, load, and temperature - ensures consistent logic-level compatibility for 5V-tolerant microcontrollers. |
| Max Output Current | 3A continuous - supports high-current analog front-ends or multi-rail FPGA I/O banks. |
| Dropout Voltage | 350mV at 3A - enables regulation from 5.15V input, critical for battery-powered systems near end-of-discharge. |
| PSRR | 72dB at 1kHz - suppresses switching noise from upstream DC/DC converters feeding sensitive ADCs or RF sections. |
| Operating Temp | -40°C to +125°C junction - qualified for under-hood automotive and industrial motor drive control modules. |
| Quiescent Current | 25mA typical - remains stable across load, simplifying standby power budgeting in always-on systems. |
Pinout & Package
Supplied in TO-220-5 (straight lead, tab-connected to GND) package with exposed thermal pad for PCB heat sinking. Pin 1 = IN, Pin 2 = GND, Pin 3 = OUT, Pin 4 = GND, Pin 5 = ON/OFF (active-high enable).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| Pin 1 (IN) | Input voltage supply | Accepts 5.15V–26V unregulated input; requires local 10µF ceramic bypass capacitor. |
| Pin 2 (GND) | Ground reference | Primary ground return path; connects to thermal tab and internal regulator ground plane. |
| Pin 3 (OUT) | Regulated output | Delivers 4.8V ±1.5%; requires ≥10µF ceramic output capacitor with ESR < 100mΩ. |
| Pin 4 (GND) | Secondary ground | Dedicated low-impedance ground for feedback loop stability; must be short-traced to Pin 2 and output cap. |
| Pin 5 (ON/OFF) | Enable control | Active-high logic input; pulls high internally; drives low to disable output and reduce quiescent current to 100µA. |
Key Features
| Feature | Design Value |
|---|---|
| Precision fixed 4.8V output | ±1.5% tolerance over full operating range eliminates need for external trimming in factory calibration setups. |
| Thermal shutdown with auto-recovery | Shuts down at 160°C junction and resumes operation after cooldown - prevents permanent latch-up during transient overload. |
| Foldback current limiting | Reduces output current to ~1A during short-circuit - limits power dissipation and avoids thermal runaway in TO-220 package. |
| Ceramic capacitor compatible | Stable with 10–100µF X7R/X5R ceramics - removes electrolytic capacitor aging and size constraints in space-constrained designs. |
Applications
| Industrial PLC I/O Module | Automotive Body Control Unit |
|---|---|
Use Scenario: Powering isolated digital I/O drivers and analog sensor signal conditioning circuits in modular PLC backplanes. IC Role / Device Role / Timing Role: Primary 4.8V LDO supplying 3A peak to multiple optocoupler drivers and precision op-amps. Use Value: Low dropout preserves headroom from 5.5V intermediate rail; high PSRR prevents noise coupling into 16-bit ADC references. | Use Scenario: Supplying 4.8V to LIN transceivers, door module microcontrollers, and LED driver ICs in body electronics. IC Role / Device Role / Timing Role: Main regulated rail for LIN physical layer and MCU core logic in AEC-Q100 Grade 2 environment. Use Value: -40°C to +125°C rating meets under-dash thermal requirements; ON/OFF pin enables sleep-mode current reduction. |
| Medical Patient Monitor Front-End | Test & Measurement Signal Source |
Use Scenario: Providing clean 4.8V bias to low-noise instrumentation amplifiers and analog multiplexers in portable ECG units. IC Role / Device Role / Timing Role: Ultra-low-noise analog supply rail decoupled from noisy digital subsystems. Use Value: 72dB PSRR at 1kHz rejects switching artifacts from shared 12V DC/DC converter, preserving µV-level signal integrity. | Use Scenario: Generating stable 4.8V reference for DAC-based waveform generators and precision voltage sources. IC Role / Device Role / Timing Role: High-accuracy voltage source for 16-bit DAC reference buffers and calibration circuitry. Use Value: ±1.5% output tolerance over temperature reduces system-level calibration frequency in bench-grade equipment. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LT1965EMS8-4.8#PBF | 2.5A max output, 300mV dropout at 2.5A, higher PSRR (75dB), but requires minimum 22µF output capacitance. | Better noise rejection but lower current capacity - suitable where 2.5A suffices and tighter PSRR is prioritized. | Select LT1965EMS8-4.8#PBF when PSRR >75dB is required and load current stays ≤2.5A. |
| TSP50048 | 3A output, 400mV dropout at 3A, wider input range (2.5V–36V), but ±2% output tolerance and no enable pin. | Broader input flexibility but looser regulation and no ON/OFF control - fits non-sleeping, wide-input industrial sensors. | Choose TSP50048 only if enable functionality is unnecessary and ±2% output accuracy is acceptable. |
Compared with LT1965EMS8-4.8#PBF and TSP50048, the MIC29201-4.8BT uniquely delivers 3A current, 4.8V ±1.5% accuracy, active-high enable, and ceramic-capacitor stability in a single TO-220-5 solution - making it optimal for high-current, thermally constrained, and power-managed systems.
Availability
MIC29201-4.8BT is available at Aetrix Electronics and suitable for industrial PLC I/O modules, automotive body control units, and medical patient monitor front-ends requiring stable component supply and long-term manufacturability.
Supply support for MIC29201-4.8BT 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 industrial, automotive, and communications markets.
The MIC29200 family delivers high-current, low-dropout linear regulators optimized for noise-sensitive analog and mixed-signal systems where precision, thermal robustness, and ceramic capacitor compatibility are essential.
FAQ
What is the maximum input voltage rating for the MIC29201-4.8BT?
The MIC29201-4.8BT supports an absolute maximum input voltage of 26V. Operation above this level risks permanent damage. For reliable long-term use, the recommended maximum input is 24V, especially at elevated ambient temperatures where thermal derating applies. The MIC29201-4.8BT maintains regulation down to 5.15V input (4.8V + 350mV dropout), making it ideal for 5V-derived intermediate rails.
Does the MIC29201-4.8BT require an external capacitor on the ON/OFF pin?
No, the MIC29201-4.8BT does not require an external capacitor on the ON/OFF pin. Pin 5 is a CMOS-compatible logic input with internal pull-up; it accepts standard 3.3V or 5V logic levels directly. Adding capacitance may slow enable/disable transitions and is unnecessary for stable operation. The MIC29201-4.8BT enters low-quiescent mode (<100µA) when ON/OFF is pulled low.
Can the MIC29201-4.8BT be used with a 10µF ceramic output capacitor?
Yes, the MIC29201-4.8BT is explicitly designed for stability with ceramic output capacitors ranging from 10µF to 100µF and ESR < 100mΩ. Unlike older LDOs, it does not require series resistance or tantalum/electrolytic types. A 10µF X7R 0805 ceramic placed within 5mm of Pin 3 (OUT) and Pin 2/4 (GND) ensures optimal transient response and loop stability for the MIC29201-4.8BT.
What is the thermal resistance (θJA) of the MIC29201-4.8BT in TO-220-5 package?
The MIC29201-4.8BT has a typical junction-to-ambient thermal resistance (θJA) of 35°C/W on a 1-inch² 2-oz copper pad with two thermal vias. With proper PCB heatsinking - including connection of the exposed tab to a large copper pour - the MIC29201-4.8BT sustains 3A continuous output at +85°C ambient. Derating curves in the official datasheet define exact current limits versus board layout and ambient temperature for the MIC29201-4.8BT.
Is the MIC29201-4.8BT compliant with AEC-Q100 for automotive use?
The MIC29201-4.8BT is not AEC-Q100 qualified. It is rated for industrial temperature range (-40°C to +125°C) and widely used in automotive body electronics where qualification is not mandated, but it lacks the stress testing and failure analysis documentation required for AEC-Q100 Grade 2 or Grade 3 compliance. For AEC-Q100–required applications, alternate qualified regulators must be selected instead of the MIC29201-4.8BT.
MIC29201-4.8BT Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- TO-220-5
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 26V
- Voltage - Output (Min/Fixed):
- 4.85V
- 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:
- Enable
- Protection Features:
- Load Dump, Over Current, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-220-5
MIC29201-4.8BT FAQ
1.How can I place an order for MIC29201-4.8BT through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC29201-4.8BT 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 MIC29201-4.8BT reliable?
The price and inventory of MIC29201-4.8BT are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC29201-4.8BT is usually 5 days.
3.What payment methods are accepted for MIC29201-4.8BT?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC29201-4.8BT transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC29201-4.8BT?
MIC29201-4.8BT orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC29201-4.8BT 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 MIC29201-4.8BT?
For technical support, including MIC29201-4.8BT datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC29201-4.8BT requirements.
6.How does Aetrix verify that MIC29201-4.8BT is sourced from the original manufacturer or authorized distributors?
All MIC29201-4.8BT 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 MIC29201-4.8BT meets industry standards.
7.What is the process for return or replacement of MIC29201-4.8BT?
All MIC29201-4.8BT units undergo pre-shipment inspection (PSI). If there is an issue with MIC29201-4.8BT, 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 MIC29201-4.8BT part is unused and in its original packaging.
Return procedure for MIC29201-4.8BT:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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