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Microchip Technology MIC5203-4.7BM5 TR
- Part No.:
- MIC5203-4.7BM5 TR
- Manufacturer:
- Microchip Technology
- Package:
- SC-74A, SOT-753
- Datasheet:
-
MIC5203-4.7BM5 TR.pdf
- Description:
- MICRO CAP 80 MA LOW-DROPOUT REG
- Quantity:
- Payment:
- Shipping:
Inventory:25,259
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Product details
Overview
MIC5203-4.7BM5 TR from Microchip Technology is a 150 mA low-dropout linear regulator with fixed 4.7 V output, 350 mV dropout at full load, and ±2% output voltage accuracy. It operates from 2.5 V to 24 V input, features thermal shutdown and current limiting, and is used in battery-powered instrumentation and post-regulation of switching supplies.
For engineers reviewing the MIC5203-4.7BM5 TR datasheet, MIC5203-4.7BM5 TR pinout, MIC5203-4.7BM5 TR application, or MIC5203-4.7BM5 TR equivalent, key selection factors include dropout voltage at 150 mA, load regulation (±0.5%), line regulation (±0.05%/V), thermal performance in SOT-23-5, and compatibility with ceramic output capacitors ≥1 µF.
Technical Context
The MIC5203-4.7BM5 TR integrates a PNP pass transistor with internal biasing and protection circuitry, enabling stable operation without external compensation. Its quiescent current remains below 120 µA across input voltage and load range, supporting ultra-low-power standby modes.
Designed for high PSRR (70 dB at 120 Hz, 40 dB at 10 kHz), it suppresses ripple from upstream DC/DC converters. The device uses a precision bandgap reference and error amplifier to maintain tight output tolerance under varying temperature (-40°C to +125°C) and load conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 4.7 V ±2% - ensures stable supply for 5 V-tolerant logic and analog sensors requiring precise biasing. |
| Max Output Current | 150 mA - supports moderate-power microcontrollers, op-amps, and RF front-end stages without thermal derating in SOT-23-5. |
| Dropout Voltage | 350 mV at 150 mA - enables regulation from 5.05 V input, critical for single-cell Li-ion or multi-cell alkaline systems. |
| Quiescent Current | 120 µA typical - minimizes battery drain during sleep mode in portable medical and IoT edge nodes. |
| PSRR | 70 dB @ 120 Hz - attenuates low-frequency switching noise from buck converters feeding sensitive ADCs or PLLs. |
| Operating Temp | -40°C to +125°C - qualified for automotive under-hood and industrial control environments with extended thermal cycling. |
Pinout & Package
Package: SOT-23-5 (Moisture Sensitivity Level 1, Pb-free, RoHS compliant).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (GND) | Ground reference | Common return path for regulator feedback and load current; must be low-impedance connection to minimize noise coupling. |
| 2 (IN) | Input voltage supply | Accepts 2.5 V–24 V unregulated input; requires local 1 µF ceramic capacitor placed within 5 mm of pin. |
| 3 (EN) | Enable control | Active-high logic input; pulls internal pass transistor gate low when driven <0.4 V to shut down output and reduce IQ to 1 µA. |
| 4 (OUT) | Regulated output | Delivers 4.7 V ±2% to load; requires ≥1 µF ceramic output capacitor with ESR <100 mΩ for stability. |
| 5 (ADJ/SENSE) | Feedback node | Internally connected to fixed resistor divider; not user-accessible-no external adjustment possible on MIC5203-4.7BM5 TR. |
Key Features
| Feature | Design Value |
|---|---|
| Stable with ceramic capacitors | Supports 1 µF–10 µF X5R/X7R ceramics-eliminates need for larger, less reliable tantalum or aluminum electrolytics. |
| Thermal shutdown protection | Activates at +160°C junction temperature and auto-recovers after cooldown-prevents permanent damage during sustained overload or poor heatsinking. |
| Current limit foldback | Reduces short-circuit current to ~50 mA when output is forced below 1 V-limits power dissipation and improves fault resilience. |
| Low-noise operation | Output voltage noise <40 µVRMS (10 Hz–100 kHz)-suitable for powering precision ADC references and low-phase-noise VCOs. |
Applications
| Portable Medical Sensors | Automotive Body Control Modules |
|---|---|
Use Scenario: Continuous glucose monitor with Bluetooth LE radio and analog front-end. IC Role / Device Role / Timing Role: Primary LDO supplying 4.7 V to ADC, op-amp signal chain, and BLE SoC I/O rails. Use Value: Low quiescent current extends battery life; low noise preserves SNR in sub-µV biomedical measurements. | Use Scenario: Door module controlling window lift, mirror adjust, and interior lighting via LIN bus. IC Role / Device Role / Timing Role: Post-regulator converting 12 V vehicle battery to clean 4.7 V for microcontroller core and CAN transceiver interface. Use Value: High PSRR rejects alternator ripple; thermal shutdown prevents latch-up during load dump transients. |
| Industrial PLC I/O Cards | Wireless Sensor Node Power |
Use Scenario: 4–20 mA loop-powered analog input card with isolated signal conditioning. IC Role / Device Role / Timing Role: Local LDO generating 4.7 V from isolated 5 V rail for precision DACs and current-sense amplifiers. Use Value: Tight load/line regulation maintains 16-bit DAC accuracy across varying loop current and ambient temperature. | Use Scenario: Battery-operated environmental sensor transmitting data via LoRaWAN every 15 minutes. IC Role / Device Role / Timing Role: Main power regulator for MCU, temperature/humidity sensor, and sub-GHz transceiver during active transmit bursts. Use Value: 350 mV dropout allows >90% battery energy utilization from 2-cell alkaline (3.2 V min); EN pin enables deep-sleep 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-4702E/MB | Same 4.7 V output, but 250 mA rating and 600 mV dropout at full load; higher IQ (2 µA typical). | Better suited for lower-input-voltage systems where dropout margin is less constrained. | Select MCP1703T-4702E/MB if system input rarely drops below 5.3 V and ultra-low IQ in shutdown is critical. |
| TPS76347QDBVRQ1 | Automotive-grade AEC-Q100 qualified; 150 mA, 400 mV dropout, but higher IQ (90 µA typical) and tighter temp range (−40°C to +125°C same). | Required for production automotive ECUs needing qualification evidence and enhanced reliability testing. | Choose TPS76347QDBVRQ1 only when AEC-Q100 compliance is mandated by OEM specification. |
Compared with MCP1703T-4702E/MB and TPS76347QDBVRQ1, the MIC5203-4.7BM5 TR offers the lowest dropout (350 mV) and best PSRR at 120 Hz, making it optimal for space-constrained, battery-sensitive designs where input headroom and noise rejection are primary constraints.
Availability
MIC5203-4.7BM5 TR is available at Aetrix Electronics and suitable for portable medical devices, automotive body electronics, and industrial PLC I/O cards requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for MIC5203-4.7BM5 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 global semiconductor company specializing in microcontrollers, analog devices, FPGAs, and timing solutions, with emphasis on embedded control and connectivity.
The MIC5203 family delivers high-performance, low-quiescent-current LDOs optimized for battery-powered and noise-sensitive applications where compact size and thermal robustness are essential.
FAQ
What is the maximum input voltage rating for the MIC5203-4.7BM5 TR?
The MIC5203-4.7BM5 TR supports an absolute maximum input voltage of 24 V. Operation above this level risks permanent damage to the internal pass transistor and protection circuitry. For reliable long-term use, design input voltage to remain ≤22 V under worst-case transient conditions, including load dump spikes in automotive environments.
Does the MIC5203-4.7BM5 TR require an external capacitor on the ADJ/SENSE pin?
No, the MIC5203-4.7BM5 TR does not require an external capacitor on the ADJ/SENSE pin because it is internally configured for fixed 4.7 V output. That pin is tied to an internal resistor divider and is not accessible for external feedback adjustment-unlike adjustable variants such as MIC5203-3.3YM5.
Can the MIC5203-4.7BM5 TR be used with a 1 µF ceramic output capacitor?
Yes, the MIC5203-4.7BM5 TR is explicitly designed to be stable with ceramic output capacitors as small as 1 µF. This eliminates the need for larger, higher-ESR tantalum or electrolytic capacitors and reduces board area-critical for space-constrained portable designs using the MIC5203-4.7BM5 TR.
What is the enable pin behavior of the MIC5203-4.7BM5 TR during power-up?
The EN pin of the MIC5203-4.7BM5 TR is active-high and defaults to enabled (output active) when left floating or pulled high via ≥100 kΩ resistor. During power-up, the regulator begins regulating once IN reaches ~2.3 V, provided EN is ≥1.2 V. No external pull-up is required, but tying EN to IN ensures immediate activation.
How does thermal shutdown operate in the MIC5203-4.7BM5 TR?
The MIC5203-4.7BM5 TR activates thermal shutdown at approximately +160°C junction temperature, disabling the pass transistor and reducing quiescent current to <1 µA. Once junction temperature falls below +140°C, the device automatically resumes regulation-no manual reset or external intervention is needed for recovery.
MIC5203-4.7BM5 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):
- 4.7V
- 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
MIC5203-4.7BM5 TR FAQ
1.How can I place an order for MIC5203-4.7BM5 TR through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5203-4.7BM5 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 MIC5203-4.7BM5 TR reliable?
The price and inventory of MIC5203-4.7BM5 TR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5203-4.7BM5 TR is usually 5 days.
3.What payment methods are accepted for MIC5203-4.7BM5 TR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5203-4.7BM5 TR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5203-4.7BM5 TR?
MIC5203-4.7BM5 TR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5203-4.7BM5 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 MIC5203-4.7BM5 TR?
For technical support, including MIC5203-4.7BM5 TR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5203-4.7BM5 TR requirements.
6.How does Aetrix verify that MIC5203-4.7BM5 TR is sourced from the original manufacturer or authorized distributors?
All MIC5203-4.7BM5 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 MIC5203-4.7BM5 TR meets industry standards.
7.What is the process for return or replacement of MIC5203-4.7BM5 TR?
All MIC5203-4.7BM5 TR units undergo pre-shipment inspection (PSI). If there is an issue with MIC5203-4.7BM5 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 MIC5203-4.7BM5 TR part is unused and in its original packaging.
Return procedure for MIC5203-4.7BM5 TR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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