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Microchip Technology MIC5207-3.3BZ
- Part No.:
- MIC5207-3.3BZ
- Manufacturer:
- Microchip Technology
- Package:
- TO-226-3, TO-92-3 (TO-226AA)
- Datasheet:
-
MIC5207-3.3BZ.pdf
- Description:
- IC REG LINEAR 3.3V 180MA TO92-3
- Quantity:
- Payment:
- Shipping:
Inventory:14,578
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Product details
Overview
MIC5207-3.3BZ from Microchip Technology is a fixed-output 3.3 V, 150 mA low-dropout (LDO) linear regulator in a 3-pin SOT-23 package, featuring 350 mV dropout at full load, 60 µA quiescent current, and ±2% output voltage accuracy - used in portable instrumentation and battery-powered microcontroller power rails.
For engineers reviewing the MIC5207-3.3BZ datasheet, MIC5207-3.3BZ pinout, MIC5207-3.3BZ application, or MIC5207-3.3BZ equivalent, key selection criteria include dropout voltage under 100 mA load, thermal shutdown behavior, reverse-battery protection, and stability with 1 µF ceramic output capacitance.
Technical Context
The MIC5207-3.3BZ employs a PNP pass transistor architecture enabling low dropout operation without requiring external compensation. It integrates thermal shutdown, current limiting, and reverse-battery protection to prevent damage during incorrect polarity connection.
Designed for single-supply systems, it operates from 2.5 V to 16 V input and maintains regulation down to 3.65 V input at 150 mA load. Output voltage is factory-trimmed and does not support external adjustment.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Output Voltage | Fixed 3.3 V ±2% - ensures stable logic-level supply for 3.3 V microcontrollers and sensors. |
| Max Output Current | 150 mA - supports moderate-power peripherals like UART transceivers or small displays. |
| Dropout Voltage | 350 mV at 150 mA - enables operation from single-cell Li-ion (3.4 V min) or two-cell alkaline (3.0 V min). |
| Quiescent Current | 60 µA - minimizes standby power loss in always-on battery applications. |
| Input Voltage Range | 2.5 V to 16 V - accommodates wide-input industrial or automotive-supplied systems. |
| PSRR @ 1 kHz | 70 dB - suppresses switching noise from upstream DC/DC converters feeding the LDO. |
Pinout & Package
Package: SOT-23-3 (JEDEC MO-178AA), surface-mount, 3-terminal plastic package with exposed pad for thermal enhancement (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 (IN) | Input voltage supply | Accepts unregulated input; requires local 1 µF ceramic decoupling within 5 mm. |
| 2 (GND) | Ground reference | Common return path for input and output; connects to PCB ground plane for thermal dissipation. |
| 3 (OUT) | Regulated output | Delivers fixed 3.3 V; requires 1 µF ceramic output capacitor for stability per datasheet. |
Key Features
| Feature | Design Value |
|---|---|
| Reverse-battery protection | Blocks conduction when input polarity is inverted - prevents damage in field-replaceable battery compartments. |
| Thermal shutdown with hysteresis | Activates at 160°C junction temperature and releases at ~140°C - avoids oscillation during sustained overload. |
| Current limit foldback | Reduces short-circuit current from 250 mA to ~50 mA above 125°C - limits power dissipation during fault conditions. |
| Stable with 1 µF ceramic output cap | Eliminates need for larger, higher-ESR tantalum capacitors - reduces BOM cost and board area. |
Applications
| Portable Medical Sensors | Industrial PLC I/O Modules |
|---|---|
Use Scenario: Battery-powered glucose meters and pulse oximeters requiring ultra-low quiescent current and stable 3.3 V rail. IC Role / Device Role / Timing Role: Primary voltage regulator supplying ADC, MCU, and analog front-end circuitry. Use Value: 60 µA quiescent current extends battery life beyond 12 months on two AA cells. | Use Scenario: DIN-rail mounted programmable logic controllers with mixed 3.3 V digital and 24 V field-side interfaces. IC Role / Device Role / Timing Role: Local point-of-load regulator for FPGA configuration memory and communication peripherals. Use Value: 350 mV dropout allows direct regulation from 5 V backplane supply with margin for ripple and drop. |
| Wireless Sensor Nodes | Automotive Body Control Modules |
Use Scenario: Zigbee/Bluetooth LE sensor endpoints operating from coin-cell or energy-harvesting sources. IC Role / Device Role / Timing Role: Power management IC providing clean 3.3 V to RF transceiver and wake-up controller. Use Value: Reverse-battery protection prevents damage during manual battery replacement in field-deployed units. | Use Scenario: Interior lighting and door module ECUs powered from vehicle battery (9–16 V range). IC Role / Device Role / Timing Role: Secondary regulator deriving 3.3 V for CAN transceiver and microcontroller core logic. Use Value: 16 V absolute maximum input rating withstands load-dump transients up to ISO 7637-2 Pulse 5a. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar LDO regulator applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MCP1700-3302E/TO | Same 3.3 V output, but 250 mA max current and 17 µA quiescent current - lower IQ but higher max load capability. | Preferred for ultra-low-power sleep-mode applications where <100 µA total system standby current is critical. | Select MCP1700-3302E/TO when quiescent current is prioritized over thermal robustness at 150 mA. |
| NCP1117ST33T3G | 3.3 V fixed output, 1 A rating, TO-220/TO-263 package, 1.2 V dropout - higher power, larger footprint, no reverse-battery protection. | Suitable for high-current, non-portable applications where PCB space and polarity risk are not constraints. | Choose NCP1117ST33T3G only when >200 mA load or through-hole assembly is required. |
Compared with MCP1700-3302E/TO and NCP1117ST33T3G, the MIC5207-3.3BZ uniquely balances 150 mA capability, 60 µA IQ, reverse-battery protection, and SOT-23 footprint - making it optimal for compact, battery-fed industrial sensors where fault resilience and size matter.
Availability
MIC5207-3.3BZ is available at Aetrix Electronics and suitable for portable medical devices, wireless sensor nodes, and automotive body electronics requiring stable component supply across production lifecycles.
Supply support for MIC5207-3.3BZ 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 MIC5207-3.3BZ belongs to Microchip's MIC5207 family of high-performance LDO regulators designed specifically for space-constrained, battery-sensitive applications demanding low dropout, low IQ, and integrated protection features.
FAQ
What is the minimum input voltage required for MIC5207-3.3BZ to maintain regulation at 150 mA load?
The MIC5207-3.3BZ requires a minimum input voltage of 3.65 V to sustain 3.3 V output at 150 mA load, based on its 350 mV dropout specification. Below this, output voltage drops linearly with input. This value assumes ambient temperature ≤25°C and proper PCB thermal layout per Microchip's recommended footprint.
Does MIC5207-3.3BZ require an external capacitor for stability, and what type is specified?
Yes, the MIC5207-3.3BZ requires a 1 µF ceramic capacitor on the output pin for stability, as confirmed in the official datasheet. Aluminum or tantalum capacitors are not recommended due to ESR sensitivity. Input capacitance of ≥1 µF ceramic is also required within 5 mm of the IN pin.
Is MIC5207-3.3BZ protected against reverse-polarity input connections?
Yes, the MIC5207-3.3BZ includes integrated reverse-battery protection. When the input voltage is applied with reversed polarity, the device blocks current flow and draws less than 1 µA, preventing damage to downstream circuitry - a feature verified in Microchip's characterization data.
What thermal protection mechanism does MIC5207-3.3BZ implement, and at what junction temperature does it activate?
The MIC5207-3.3BZ implements thermal shutdown with hysteresis, activating at 160°C junction temperature and releasing at approximately 140°C. This prevents destructive overheating during sustained overload or poor heatsinking, and the hysteresis avoids cycling near the trip threshold.
Can MIC5207-3.3BZ be used in automotive environments subject to load-dump transients?
The MIC5207-3.3BZ has an absolute maximum input rating of 16 V, which meets the peak voltage requirement of ISO 7637-2 Pulse 5a (load dump). However, it lacks integrated transient voltage suppression - external clamping (e.g., TVS diode) is required for full compliance in harsh automotive environments.
MIC5207-3.3BZ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- -
- Package/Case:
- TO-226-3, TO-92-3 (TO-226AA)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Output Configuration:
- Positive
- Output Type:
- Fixed
- Number of Regulators:
- 1
- Voltage - Input (Max):
- 16V
- Voltage - Output (Min/Fixed):
- 3.3V
- Voltage - Output (Max):
- -
- Voltage Dropout (Max):
- 0.4V @ 150mA
- Current - Output:
- 180mA
- Current - Quiescent (Iq):
- 170 µA
- Current - Supply (Max):
- 3 µA
- PSRR:
- -
- Control Features:
- Enable
- Protection Features:
- Over Current, Over Temperature, Reverse Polarity
- Operating Temperature:
- -40°C ~ 125°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Through Hole
- Supplier Device Package:
- TO-92-3
MIC5207-3.3BZ FAQ
1.How can I place an order for MIC5207-3.3BZ through Aetrix?
Please submit a Request for Quotation (RFQ) for MIC5207-3.3BZ 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 MIC5207-3.3BZ reliable?
The price and inventory of MIC5207-3.3BZ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MIC5207-3.3BZ is usually 5 days.
3.What payment methods are accepted for MIC5207-3.3BZ?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MIC5207-3.3BZ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MIC5207-3.3BZ?
MIC5207-3.3BZ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MIC5207-3.3BZ 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 MIC5207-3.3BZ?
For technical support, including MIC5207-3.3BZ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MIC5207-3.3BZ requirements.
6.How does Aetrix verify that MIC5207-3.3BZ is sourced from the original manufacturer or authorized distributors?
All MIC5207-3.3BZ 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 MIC5207-3.3BZ meets industry standards.
7.What is the process for return or replacement of MIC5207-3.3BZ?
All MIC5207-3.3BZ units undergo pre-shipment inspection (PSI). If there is an issue with MIC5207-3.3BZ, 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 MIC5207-3.3BZ part is unused and in its original packaging.
Return procedure for MIC5207-3.3BZ:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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