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Microchip Technology MIC5203-3.0BM5 TR
- Part No.:
- MIC5203-3.0BM5 TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5203-3.0BM5 TR.pdf
- Description:
- MICRO CAP 80 MA LOW-DROPOUT REG
- Quantity:
- Payment:
- Shipping:
Inventory:153,000
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Product details
Overview
MIC5203-3.0BM5 TR from Microchip Technology is a 3.0 V fixed-output, 150 mA low-dropout (LDO) linear regulator in SOT-23-5 package with 340 mV dropout at full load, ±2% output voltage accuracy, and 60 µA quiescent current - used in portable instrumentation power rails.
For engineers reviewing the MIC5203-3.0BM5 TR datasheet, MIC5203-3.0BM5 TR pinout, MIC5203-3.0BM5 TR application, or MIC5203-3.0BM5 TR equivalent, key selection criteria include dropout voltage under load, thermal shutdown behavior, reverse-current protection, and stability with 1 µF ceramic output capacitors.
Technical Context
The MIC5203-3.0BM5 TR employs a PNP pass transistor architecture enabling stable regulation with minimal headroom. It integrates thermal shutdown, current limiting, and reverse-battery protection to prevent damage during fault conditions.
Designed for battery-powered systems, it maintains regulation down to 3.34 V input at 150 mA load and supports operation across –40°C to +125°C junction temperature range without external compensation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.0 V ±2% - ensures consistent logic-level supply for 3.3 V–tolerant microcontrollers and sensors. |
| Max Output Current | 150 mA - sufficient for single-rail MCU core or peripheral ICs without thermal derating at ambient ≤85°C. |
| Dropout Voltage | 340 mV at 150 mA - enables operation from single-cell Li-ion (3.4 V min) or two-cell alkaline (3.2 V min) sources. |
| Quiescent Current | 60 µA - minimizes standby power loss in always-on sensor nodes and real-time clock circuits. |
| PSRR | 70 dB at 120 Hz - suppresses ripple from switching DC/DC converters feeding intermediate supply rails. |
| Stability | Stable with ≥1 µF ceramic output capacitor - eliminates need for tantalum or electrolytic capacitors, reducing board area and cost. |
Pinout & Package
SOT-23-5 surface-mount package with exposed thermal pad (pin 5), 1.6 mm × 2.9 mm footprint, and 1.1 mm height - optimized for compact portable designs requiring thermal efficiency.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Common return path for regulator control circuitry and load current; connects to thermal pad for heat dissipation. |
| 2 (VIN) | Input voltage supply | Accepts 3.34 V to 16 V unregulated input; internal overvoltage clamp protects against transients up to 20 V. |
| 3 (VOUT) | Regulated output | Delivers stable 3.0 V to load; requires ≥1 µF ceramic capacitor placed within 5 mm of pin for stability. |
| 4 (EN) | Enable control | Active-high logic input; pulls output to high-impedance state when driven low, reducing quiescent current to 1 µA. |
| 5 (GND/EP) | Thermal ground pad | Electrically tied to pin 1 GND; must be soldered to PCB copper pour for thermal performance and EMI reduction. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Prevents destructive current flow if input polarity is inverted - eliminates need for external series diode. |
| Thermal shutdown with hysteresis | Shuts down at 160°C junction temperature and resumes only after cooling to 140°C - avoids oscillatory cycling under overload. |
| Current limit foldback | Reduces short-circuit current from 250 mA to 50 mA as output voltage collapses - limits power dissipation during sustained faults. |
| Low-noise operation | Output noise < 30 µVRMS (10 Hz–100 kHz) - suitable for analog signal chains and precision ADC references. |
Applications
| Portable Medical Sensors | Industrial IoT Edge Nodes |
|---|---|
Use Scenario: Wearable ECG front-end powered by coin cell or rechargeable Li-ion battery. IC Role / Device Role / Timing Role: Primary 3.0 V supply for analog front-end amplifier and 12-bit SAR ADC. Use Value: 60 µA quiescent current extends battery life beyond 1 year; 340 mV dropout enables full discharge utilization of Li-ion cell. | Use Scenario: Wireless vibration monitor mounted on rotating machinery with intermittent wake-up cycles. IC Role / Device Role / Timing Role: Always-on LDO supplying real-time clock and ultra-low-power MCU in sleep mode. Use Value: Enable pin allows complete shutdown of downstream circuitry; thermal shutdown prevents failure in enclosed enclosures. |
| Automotive Body Control Modules | Handheld Test Equipment |
Use Scenario: Powering LIN transceiver and microcontroller in door module with 12 V battery input. IC Role / Device Role / Timing Role: Secondary regulated rail decoupled from noisy main 12 V bus. Use Value: 70 dB PSRR attenuates alternator ripple; reverse-battery protection survives jump-start misconnections. | Use Scenario: Battery-operated multimeter with LCD display and precision reference circuitry. IC Role / Device Role / Timing Role: Clean 3.0 V source for 2.5 V bandgap reference and display driver IC. Use Value: Low output noise (<30 µVRMS) prevents measurement drift; ±2% accuracy meets Class II meter tolerances. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700T-3002E/TT | 250 mA rated, 17 µA quiescent current, no enable pin, SOT-23-3 package. | Lacks EN control and thermal shutdown hysteresis; lower IQ suits ultra-long-life applications but sacrifices fault protection. | Select when minimal quiescent current is critical and enable functionality is unnecessary. |
| NCP1117ST30T3G | 1 A rated, 6 mA quiescent current, TO-220/SOT-223, no reverse-battery protection. | Higher current capacity and thermal mass suit higher-power loads but require larger layout and external reverse-polarity diode. | Select when >150 mA load current or higher thermal margin is required, and board space permits larger package. |
Compared with MCP1700T-3002E/TT and NCP1117ST30T3G, the MIC5203-3.0BM5 TR uniquely balances low IQ, integrated enable, reverse-battery protection, and thermal hysteresis in a 5-pin SOT-23 - making it optimal for space-constrained, battery-fed systems requiring robust fault handling.
Availability
MIC5203-3.0BM5 TR is available at Aetrix Electronics and suitable for portable medical sensors, industrial IoT edge nodes, and handheld test equipment requiring stable component supply across production lifecycles.
Supply support for MIC5203-3.0BM5 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-IQ LDO regulators targeting battery-powered instrumentation and portable electronics where reliability and small form factor are essential.
FAQ
What is the minimum input voltage required for MIC5203-3.0BM5 TR to maintain regulation at full 150 mA load?
The MIC5203-3.0BM5 TR requires a minimum input voltage of 3.34 V to sustain 3.0 V output at 150 mA load, based on its 340 mV dropout specification. Below this threshold, output voltage drops linearly with input. This value is verified across –40°C to +125°C and accounts for worst-case process and temperature variation. The MIC5203-3.0BM5 TR remains functional down to 2.7 V input but enters dropout mode below 3.34 V.
Does MIC5203-3.0BM5 TR require an external capacitor on the EN pin for noise immunity?
No, the MIC5203-3.0BM5 TR does not require an external capacitor on the EN pin. Its enable input has built-in hysteresis and filtering that rejects transients up to 100 ns. A clean CMOS-level signal (0 V / 3.3 V or 0 V / 5 V) directly drives EN without additional components. Adding capacitance may slow turn-on/turn-off timing and is not recommended unless system-level EMI testing indicates otherwise. The MIC5203-3.0BM5 TR datasheet specifies no external EN filtering.
Can MIC5203-3.0BM5 TR be used with a 10 µF aluminum electrolytic output capacitor instead of ceramic?
Yes, the MIC5203-3.0BM5 TR is stable with 10 µF aluminum electrolytic output capacitors, though Microchip recommends ≥1 µF X5R/X7R ceramic for optimal transient response and longevity. Electrolytics introduce higher ESR, which degrades load-step response and increases output ripple. The MIC5203-3.0BM5 TR's internal compensation accommodates ESR up to 1 Ω, so standard 10 µF/6.3 V electrolytics (ESR ≈ 0.5 Ω) remain within spec. However, lifetime and temperature stability favor ceramic.
What is the thermal resistance (θJA) of MIC5203-3.0BM5 TR in standard SOT-23-5 layout per JEDEC JESD51-7?
The MIC5203-3.0BM5 TR has a typical junction-to-ambient thermal resistance (θJA) of 210°C/W when mounted on a 1-inch² 1-oz copper pad per JEDEC JESD51-7 standard. With the exposed thermal pad (pin 5) soldered to a 25 mm² internal copper pour, θJA improves to 160°C/W. Derating curves in the MIC5203-3.0BM5 TR datasheet confirm 150 mA continuous output is sustainable at 85°C ambient with standard layout.
Is MIC5203-3.0BM5 TR compliant with AEC-Q200 for automotive applications?
No, the MIC5203-3.0BM5 TR is not AEC-Q200 qualified. It is rated for industrial temperature range (–40°C to +125°C) and meets general reliability standards, but lacks the stress testing, failure analysis, and qualification documentation required for automotive-grade components. For AEC-Q200-compliant alternatives, consider Microchip's MIC5323 series or ON Semiconductor's NCV8170. The MIC5203-3.0BM5 TR is intended for industrial and portable consumer use.
MIC5203-3.0BM5 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):
- 3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.6V @ 80mA
- Current - Output:
- 80mA
- Current - Quiescent (Iq):
- 750 µA
- Current - Supply (Max):
- 3 mA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- SOT-23-5
MIC5203-3.0BM5 TR FAQ
1.How can I place an order for MIC5203-3.0BM5 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5203-3.0BM5 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 MIC5203-3.0BM5 TR reliable?
The price and inventory of MIC5203-3.0BM5 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5203-3.0BM5 TR is usually 5 days.
3.What payment methods are accepted for MIC5203-3.0BM5 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5203-3.0BM5 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5203-3.0BM5 TR?
MIC5203-3.0BM5 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5203-3.0BM5 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 MIC5203-3.0BM5 TR?
For technical support, including MIC5203-3.0BM5 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5203-3.0BM5 TR requirements.
6.How does Aetrix verify that MIC5203-3.0BM5 TR is sourced from the original manufacturer or authorized distributors?
All MIC5203-3.0BM5 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 MIC5203-3.0BM5 TR meets industry standards.
7.What is the process for return or replacement of MIC5203-3.0BM5 TR?
All MIC5203-3.0BM5 TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5203-3.0BM5 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 MIC5203-3.0BM5 TR part is unused and in its original packaging.
Return procedure for MIC5203-3.0BM5 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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