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Microchip Technology MIC5203-2.8BM5 TR
- Part No.:
- MIC5203-2.8BM5 TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5203-2.8BM5 TR.pdf
- Description:
- IC REG LINEAR 2.8V 80MA SOT23-5
- Quantity:
- Payment:
- Shipping:
Inventory:25,605
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Product details
Overview
MIC5203-2.8BM5 TR from Microchip Technology is a 150 mA low-dropout linear regulator with fixed 2.8 V output, 350 mV dropout at full load, and ±2% output voltage accuracy. It features thermal shutdown, current limiting, and reverse-battery protection, and is used in portable instrumentation and battery-powered microcontroller systems.
For engineers reviewing the MIC5203-2.8BM5 TR datasheet, MIC5203-2.8BM5 TR pinout, MIC5203-2.8BM5 TR application, or MIC5203-2.8BM5 TR equivalent, key selection factors include dropout voltage under 150 mA load, guaranteed stability with 1 µF ceramic output capacitor, and operation across –40°C to +125°C junction temperature range.
Technical Context
The MIC5203-2.8BM5 TR employs a PNP pass transistor architecture enabling low dropout performance without requiring external compensation. Its internal bandgap reference and error amplifier deliver tight line and load regulation (±0.5% typical) over input voltages from 2.9 V to 16 V.
Designed for space-constrained applications, it integrates protection circuitry including foldback current limiting and thermal shutdown with automatic recovery. The device operates without external components beyond input and output capacitors and supports stable regulation with ESR < 1 Ω ceramic capacitors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 2.8 V ±2% - ensures compatible biasing for 2.8 V logic rails and analog sensors |
| Max Output Current | 150 mA - sufficient for MCU cores, RF transceivers, and small-signal amplifiers |
| Dropout Voltage | 350 mV at 150 mA - enables operation from single-cell Li-ion (3.0 V min) or two-cell alkaline |
| Input Voltage Range | 2.9 V to 16 V - accommodates wide supply sources including unregulated wall adapters |
| Quiescent Current | 120 µA typical - minimizes standby power loss in battery-critical designs |
| Junction Temp Range | –40°C to +125°C - qualified for automotive under-hood and industrial control environments |
Pinout & Package
SOT-23-5 package: compact 5-pin surface-mount outline with exposed thermal pad (pin 5), footprint compatible with JEDEC MO-178AB.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Common return path for regulator feedback and load current |
| 2 (VIN) | Input supply | Accepts 2.9–16 V DC; requires local 1 µF ceramic decoupling |
| 3 (VOUT) | Regulated output | Delivers stable 2.8 V ±2%; connects directly to load and output capacitor |
| 4 (EN) | Enable control | Active-high logic input; pulls low to disable regulator and reduce quiescent current to 1 µA |
| 5 (GND/EP) | Thermal ground pad | Internally connected to substrate GND; must be soldered to PCB copper for thermal dissipation |
Key Features
| Feature | Design Value |
|---|---|
| Stable with 1 µF ceramic output capacitor | Eliminates need for larger tantalum or aluminum electrolytic capacitors, reducing board area and cost |
| Reverse-battery protection | Prevents damage and reverse current flow when input polarity is inverted during installation or service |
| Thermal shutdown with auto-recovery | Protects against sustained overload or poor heatsinking without requiring system-level reset intervention |
| Low noise (40 µVRMS) | Minimizes power-supply-induced jitter in ADC references and RF front-end biasing |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Powering low-power analog front-ends and BLE transceivers in handheld glucose meters and pulse oximeters. IC Role / Device Role / Timing Role: Primary 2.8 V supply regulator delivering clean, stable voltage to signal conditioning circuitry and wireless SoCs. Use Value: 40 µVRMS output noise and ±2% accuracy preserve sensor measurement integrity and wireless link reliability. | Use Scenario: Providing isolated 2.8 V bias for analog input channel amplifiers and ADC drivers in modular I/O cards. IC Role / Device Role / Timing Role: Local point-of-load regulator ensuring immunity to backplane supply ripple and transient coupling. Use Value: 350 mV dropout allows operation from 3.3 V backplane rails while maintaining headroom for brownout resilience. |
| Automotive Body Control Units | Wearable Fitness Trackers |
Use Scenario: Supplying 2.8 V to CAN transceiver bias rails and LIN interface ICs in door module ECUs. IC Role / Device Role / Timing Role: Secondary LDO supplying isolated logic voltage for communication peripherals within wider 5 V/12 V domains. Use Value: –40°C to +125°C rating and reverse-battery protection meet AEC-Q100 Grade 2 requirements for under-dash placement. | Use Scenario: Regulating battery voltage to 2.8 V for MEMS accelerometers, optical heart-rate sensors, and Bluetooth LE SoCs. IC Role / Device Role / Timing Role: Main system regulator enabling ultra-low-quiescent operation during motion-sensing sleep cycles. Use Value: 120 µA quiescent current extends coin-cell life beyond 12 months in always-on sensing mode. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1703T-2802E/MB | Same 2.8 V output, but 250 mA max output and 600 mV dropout at full load | Better suited for higher-current loads; less suitable for ultra-low-dropout edge cases | Select MCP1703T-2802E/MB when >150 mA load margin or enhanced PSRR is required |
| NCP1117ST28T3G | 2.85 V output (±2%), 1 A output, TO-220/SOT-223 package, no enable pin | Higher current capacity and thermal mass, but lacks EN control and SOT-23 footprint | Select NCP1117ST28T3G only when board layout allows larger package and enable functionality is unnecessary |
Compared with MCP1703T-2802E/MB and NCP1117ST28T3G, the MIC5203-2.8BM5 TR uniquely balances ultra-low dropout (350 mV), compact SOT-23-5 footprint, active enable control, and sub-130 µA quiescent current-making it optimal for space- and battery-constrained 2.8 V systems where every millivolt of headroom matters.
Availability
MIC5203-2.8BM5 TR is available at Aetrix Electronics and suitable for portable medical devices, industrial I/O modules, and automotive body electronics requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MIC5203-2.8BM5 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 industrial, automotive, and consumer applications.
The MIC5203 family delivers high-accuracy, low-noise LDO regulators optimized for battery-powered and space-constrained systems demanding precise voltage rails and robust protection features.
FAQ
What is the minimum input voltage required for stable operation of the MIC5203-2.8BM5 TR?
The MIC5203-2.8BM5 TR requires a minimum input voltage of 2.9 V to maintain regulation at 2.8 V output. At 150 mA load, its 350 mV dropout means it sustains regulation down to VIN = 3.15 V. Below 2.9 V, the device enters dropout and output voltage drops linearly with input. This behavior is specified across –40°C to +125°C and verified per Microchip's DC electrical characteristics table in the MIC5203-2.8BM5 TR datasheet.
Does the MIC5203-2.8BM5 TR require an external capacitor on the EN pin for noise immunity?
No, the MIC5203-2.8BM5 TR does not require an external capacitor on the EN pin. Its enable threshold is internally set at 1.0 V (typical), with hysteresis to reject noise. However, if the EN signal originates from a noisy digital source, a 100 pF ceramic capacitor to ground may improve immunity-though this is not specified in the MIC5203-2.8BM5 TR datasheet and remains a board-level design choice, not a requirement.
Can the MIC5203-2.8BM5 TR be used with a 10 µF tantalum output capacitor instead of ceramic?
Yes, the MIC5203-2.8BM5 TR is stable with 10 µF tantalum output capacitors, though its primary qualification is with 1 µF ceramic (X5R/X7R). Tantalum capacitors introduce higher ESR, which may slightly degrade transient response and increase output ripple under dynamic load steps. The MIC5203-2.8BM5 TR datasheet confirms stability for ESR up to 1 Ω, covering most standard tantalum types-but ceramic remains preferred for lowest noise and smallest footprint.
Is the thermal pad (Pin 5) of the MIC5203-2.8BM5 TR electrically connected to ground?
Yes, the exposed thermal pad (Pin 5) of the MIC5203-2.8BM5 TR is internally connected to the die substrate and must be soldered to a grounded PCB copper pour. This connection provides both thermal conduction and electrical grounding. Failure to connect Pin 5 results in elevated junction temperature, premature thermal shutdown, and potential long-term reliability degradation per the MIC5203-2.8BM5 TR thermal design guidelines.
What is the typical output voltage accuracy of the MIC5203-2.8BM5 TR over temperature and line/load conditions?
The MIC5203-2.8BM5 TR guarantees ±2% output voltage accuracy over full temperature (–40°C to +125°C), input voltage (2.9 V to 16 V), and load (1 mA to 150 mA). Typical accuracy is ±0.5% under nominal conditions. This specification is measured and documented in the MIC5203-2.8BM5 TR production test data and confirmed in Microchip's DC electrical characteristics table.
MIC5203-2.8BM5 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):
- 16V
- Voltage - Output (Min/Fixed):
- 2.8V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 80mA
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- -
- Current - Supply (Max):
- 3 mA
- PSRR:
- -
- Control Features:
- 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
MIC5203-2.8BM5 TR FAQ
1.How can I place an order for MIC5203-2.8BM5 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5203-2.8BM5 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 MIC5203-2.8BM5 TR reliable?
The price and inventory of MIC5203-2.8BM5 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5203-2.8BM5 TR is usually 5 days.
3.What payment methods are accepted for MIC5203-2.8BM5 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5203-2.8BM5 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5203-2.8BM5 TR?
MIC5203-2.8BM5 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5203-2.8BM5 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 MIC5203-2.8BM5 TR?
For technical support, including MIC5203-2.8BM5 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5203-2.8BM5 TR requirements.
6.How does Aetrix verify that MIC5203-2.8BM5 TR is sourced from the original manufacturer or authorized distributors?
All MIC5203-2.8BM5 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 MIC5203-2.8BM5 TR meets industry standards.
7.What is the process for return or replacement of MIC5203-2.8BM5 TR?
All MIC5203-2.8BM5 TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5203-2.8BM5 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 MIC5203-2.8BM5 TR part is unused and in its original packaging.
Return procedure for MIC5203-2.8BM5 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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